CN206211258U - A kind of double frequency light supply apparatus - Google Patents
A kind of double frequency light supply apparatus Download PDFInfo
- Publication number
- CN206211258U CN206211258U CN201620942944.5U CN201620942944U CN206211258U CN 206211258 U CN206211258 U CN 206211258U CN 201620942944 U CN201620942944 U CN 201620942944U CN 206211258 U CN206211258 U CN 206211258U
- Authority
- CN
- China
- Prior art keywords
- sections
- polarization
- common
- unit
- cheng guang
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Lasers (AREA)
Abstract
The utility model is applied to optical technical field, there is provided a kind of double frequency light supply apparatus, including pump unit, coupling unit and RSPUDTcell；RSPUDTcell includes common Cheng Guang sections and non-co- Cheng Guang sections, common Cheng Guang sections are provided with gain media, non-co- Cheng Guang sections include individual transmission and light path different the first polarization sections and the second polarization sections, and the first polarization sections are different with the laser polarization direction that the second polarization sections are transmitted；Common Cheng Guang sections and the first polarization sections constitute the first resonator, and common Cheng Guang sections and the second polarization sections constitute the second resonator；Double frequency light supply apparatus also includes the output unit of the second frequency laser output that first frequency laser and the second resonator for the first resonator to be produced are produced.The utility model uses special RSPUDTcell, two resonators to share identical pump unit and gain media, can either obtain different frequency laser, can carry out difference interference using the double-frequency laser again.The regulation of its frequency is easy, and adjustable range is big, and strong interference immunity.
Description
Technical field
The utility model belongs to optical technical field, more particularly to a kind of double frequency light supply apparatus.
Background technology
The strong development for having promoted the fields such as optic communication, nonlinear optics, high-resolution optics of development of laser technology, especially
It occupies very big advantage in terms of precise interference measurement.Precise interference measurement is main using optical maser wavelength as " ruler ", utilizes
Principle of interference determines various parameters, such as acceleration, displacement, angular displacement.Due to a length of nm orders of magnitude of light wave, therefore its point
Distinguish that precision is incomparable electricity, magnetics element.Laser interferometer is with its distinctive wide-measuring range, high-resolution and survey high
The advantages of accuracy of measurement, survey field long in accurate and ultraprecise and obtain a wide range of applications.The laser that laser interference is used is main
It is single-frequency laser and two-frequency laser.The laser surveying instrument for relatively early using is that the single-frequency based on single-frequency laser is interfered
Instrument, but the interferometer influenceed than more serious by environmental factor, especially measuring environment it is severe, measurement distance is more long when receive shadow
Sound is more prominent.Be primarily due to that it produces is a direct current signal, the decay of luminous energy, air turbulence in big range measurement
Interference in the presence of, change of background light intensity etc. to laser beam can all make light beam shift, and inevitably make laser beam intensity
Change, so as to cause the drift of direct current light intensity and level.Because Homodyne interferometer largely receives direct current in measurement
The limitation that the drift of amplifier, optical receiver sensitivity and laser power rise and fall, therefore single frequency laser interferometer is in high accuracy survey
It is difficult with amount.
The two-frequency laser interferometer grown up on the basis of single frequency laser interferometer is a kind of heterodyne ineterferometer, and it is most
Outstanding feature is that measurand information is converted into frequency modulation or amplitude-modulated signal using ZAP, and it overcomes common single-frequency
The problem of interferometer measurement signal dc shift, with signal noise is small, environment resistant interference, to allow light source multichannel to be multiplexed etc. all
Many advantages, be widely used in advanced manufacturing and field of nanometer technology as range measurement, tachometric survey, vibration measurement,
Topography measurement, real time position observing and controlling etc..
The two-frequency laser for using at present mainly has double-frequency zeeman laser, double-bus network double-frequency laser and Tsing-Hua University a book
Practice the birefringence double-frequency laser that professor seminar proposes.Double-frequency zeeman laser utilizes Zeemen effect, if the effect refers to light
Source is placed in magnetic field, this phenomenon that the spectral line that light source sends will divide.Dual-Frequency Zeeman Laser output frequency difference typically exists
Below 1MHz, is generally not used for the measurement of high speed and precision laser heterodyne interference.Double-longitudinal-mode laser is the chamber by controlling laser
It is long etc., to realize exporting two laser of longitudinal mode frequency in a laserresonator, longitudinal mode frequency difference is (right up to 600MHz-1GHz
The laser length of tube answered is 150mm-250mm).Birefringence double-frequency laser is in single longitudinal mode laser resonator, to insert one piece of tool
There are optical element such as quartz crystal, calcite etc. of birefringence effect so that the laser in chamber is split into different optics
The o light and e light of Resonant Intake System, this two beams orhtogonal linear polarizaiton double-frequency laser vibration output, its frequency difference be 3-40MHz between, can
Required frequency difference is obtained by the stress for adjusting birefringece crystal.
In three kinds of above-mentioned two-frequency lasers, its common feature is that laser frequency adjustment difficulty is larger, and difference on the frequency is adjusted
Whole scope is relatively limited, such as the frequency difference of Zeeman can only can only be than larger in smaller range regulation, double longitudinal mode laser frequency difference
Range regulation, and birefringence double-frequency can only be in middle certain range regulation.In addition, two frequencies of these two-frequency lasers
Laserresonator is total to journey completely in geometric path, and two frequencies influence each other, when a frequency of laser is changed, often
Another frequency is impacted, frequency modulation is difficult.
Utility model content
The purpose of this utility model is to provide a kind of double frequency light supply apparatus, it is intended to solve traditional double frequency light supply apparatus frequency
The problem that adjustable range is small, frequency regulation is difficult.
The utility model is achieved in that a kind of double frequency light supply apparatus, including pump unit, RSPUDTcell and use
In the coupling unit of the coupling pump light for sending the pump unit to the RSPUDTcell；The RSPUDTcell includes
Common Cheng Guang sections and non-co- Cheng Guang sections, the common Cheng Guang sections are provided with gain media, and the non-co- Cheng Guang sections include independent
The laser of transmission and light path different the first polarization sections and the second polarization sections, first polarization sections and the transmission of the second polarization sections is inclined
The direction that shakes is different；The common Cheng Guang sections and first polarization sections constitute the first resonator, common Cheng Guang sections and described
Second polarization sections constitute the second resonator；The double frequency light supply apparatus also includes be used to produce first resonator first
The output unit of the second frequency laser output that frequency laser and second resonator are produced.
As optimal technical scheme of the present utility model：
The common Cheng Guang sections and non-co- Cheng Guang sections form the RSPUDTcell of annular, and the common Cheng Guang sections include position
The first common journey section in the non-co- Cheng Guang sections side and the second common journey section positioned at the non-co- Cheng Guang sections opposite side, institute
State the first common journey section and one end of first polarization sections and one end of the second polarization sections, institute are connected by the first polarization spectro unit
State second altogether journey section by the second polarization spectro unit connect first polarization sections the other end and the second polarization sections it is another
End, the light that the gain media sends forms the first frequency laser through first resonator, and the gain media sends
Light form the second frequency laser through second resonator.
The common Cheng Guang sections and non-co- Cheng Guang sections form linear RSPUDTcell, and the common Cheng Guang sections include the
Journey section and the second journey section altogether altogether, the journey section, the non-co- Cheng Guang sections, described second common altogether of the coupling unit, described first
Journey section and the output unit are sequentially set, and the gain media is arranged at the described first common journey section and/or the second common journey section, institute
State the first common journey section and one end of first polarization sections and one end of the second polarization sections, institute are connected by the first polarization spectro unit
State second altogether journey section by the second polarization spectro unit connect first polarization sections the other end and the second polarization sections it is another
End.
The common Cheng Guang sections and non-co- Cheng Guang sections form linear RSPUDTcell, and the common Cheng Guang sections include the
Three common journey sections, journey section, the non-co- Cheng Guang sections and the output unit are sequentially set altogether for the coupling unit, the described 3rd,
The gain media is arranged at the described 3rd journey section altogether, the described 3rd altogether journey section connect described the by the 3rd polarization spectro unit
One polarization sections and the second polarization sections.
The output unit is arranged at the common Cheng Guang sections；
Or, the output unit includes being arranged at the first output unit of first polarization sections and is arranged at described the
Second output unit of two polarization sections.
A single longitudinal mode unit is provided with the common Cheng Guang sections, or is respectively set in first polarization sections and the second polarization sections
There is a single longitudinal mode unit.
Adjustable damping unit is provided with first polarization sections and/or the second polarization sections.
The transmission medium of the common Cheng Guang sections, the first polarization sections and the second polarization sections is optical fiber.
The transmission medium of the common Cheng Guang sections, the first polarization sections and the second polarization sections is free space.
The transmission medium in the common Cheng Guang sections is the transmission matchmaker of free space, first polarization sections and the second polarization sections
It is optical fiber to be situated between；
Or, the transmission medium in the common Cheng Guang sections is optical fiber, the transmission of first polarization sections and the second polarization sections
Medium is free space.
The double frequency light supply apparatus that the utility model is provided has the following advantages that：
1st, there are two resonators (the first resonator and the second resonator) in the double frequency light supply apparatus, and the two resonators have
, also there are different parts (the first polarization sections and the second polarization sections), the first polarization sections and in common part (common Cheng Guang sections)
The light path of two polarization sections is different, causes the first resonator and the second resonator to produce different frequencies, obtains double-frequency laser, this pair
Frequency light supply apparatus is different from two combinations of independent monochromatic sources, and the first resonator and the second resonator share identical gain
Medium, identical pump unit, therefore the double-frequency laser for producing can realize difference interference after being adjusted unanimously by polarization state,
Can be used for the accurate measurement of various physical quantitys, and the laser of two independent single-frequency laser generations can not occur difference interference.
2nd, due to there is non-co- journey light path, the first polarization sections and the second polarization sections are separate, therefore adjust one of them
The frequency of laserresonator does not interfere with the frequency of another laserresonator, therefore it is convenient to change frequency, moreover it is possible to realize wide
The frequency-tuning range of band；
3rd, due to there is common Cheng Guang sections so that the change of the external environment such as temperature is basic to the frequency influence of two resonators
Identical, when difference interference is carried out using first frequency laser and second frequency laser, its frequency-splitting can offset this shadow
Ring, therefore the double frequency light supply apparatus has stronger anti-interference.
Brief description of the drawings
Fig. 1 is the first double frequency light supply apparatus structural representation that the utility model first embodiment is provided；
Fig. 2 is second double frequency light supply apparatus structural representation that the utility model first embodiment is provided；
Fig. 3 is a kind of double frequency light supply apparatus structural representation that the utility model second embodiment is provided；
Fig. 4 is a kind of double frequency light supply apparatus structural representation that the utility model 3rd embodiment is provided；
Fig. 5 is the first double frequency light supply apparatus structural representation that the utility model fourth embodiment is provided；
Fig. 6 is second double frequency light supply apparatus structural representation that the utility model fourth embodiment is provided；
Fig. 7 is a kind of double frequency light supply apparatus structural representation that the embodiment of the utility model the 5th is provided；
Fig. 8 is a kind of double frequency light supply apparatus structural representation that the utility model sixth embodiment is provided；
Fig. 9 is a kind of double frequency light supply apparatus structural representation that the embodiment of the utility model the 7th is provided.
Specific embodiment
In order that the purpose of this utility model, technical scheme and advantage become more apparent, below in conjunction with accompanying drawing and implementation
Example, is further elaborated to the utility model.It should be appreciated that specific embodiment described herein is only used to explain
The utility model, is not used to limit the utility model.
Of the present utility model implementing is described in detail below in conjunction with specific embodiment：
Fig. 1 is refer to, the utility model embodiment provides a kind of double frequency light supply apparatus, including pump unit 10, coupling list
Unit 20, and RSPUDTcell, wherein, pump unit 10 sends pump light, and coupling unit 20 is by coupling pump light to resonator
Unit.RSPUDTcell includes common Cheng Guang sections and non-co- Cheng Guang sections.The common Cheng Guang sections are provided with gain media 30, non-co- journey
Light section includes individual transmission and light path different the first polarization sections 401 and the second polarization sections 402, and the first polarization sections 401 are transmitted
The light of the first polarization direction, the present embodiment is by taking S light as an example；Second polarization sections 402 transmit second light of polarization direction, this reality
Example is applied by taking P light as an example, S light is vertical with the polarization direction of P light.Common Cheng Guang sections and the first polarization sections 401 constitute the first resonator,
Common Cheng Guang sections and the second polarization sections 402 constitute the second resonator, and the double frequency light supply apparatus also includes being used for the first resonator
The output unit 50 of the second frequency laser output that the first frequency laser of generation and the second resonator are produced.
The double frequency light supply apparatus is a kind of dual resonant cavity light source, i.e. the first resonator and the second resonator, and the two are humorous
Chamber shake in the presence of one section of common optical pathways, also in the presence of one section of independent non-common light path, i.e. the first polarization sections 401 and the second polarization sections
402, because the first polarization sections 401 are different with the light path of the second polarization sections 402, make the light path of the first resonator and the second resonator
Difference, and then cause that the two resonators produce the different first frequency laser and second frequency laser of frequency.Again due to this two
Individual resonator shares same gain media 30 and pump unit 10 so that the double-frequency laser that the double frequency light supply apparatus is produced is inclined at its
Polarization state can be used for difference interference after being adjusted to unanimously, different from two traditional combinations of monochromatic sources.
Specifically, the means for making the first polarization sections 401 and the second polarization sections 402 form certain optical path difference have a lot, example
As the first polarization sections 401 are identical with the transmission medium of the second polarization sections 402 and length is different, or the first polarization sections 401 and the
The transmission medium of two polarization sections 402 is identical, but length is identical to set one in the first polarization sections 401 or the second polarization sections 402
Change crystal of light path etc., the present embodiment can use but be not limited to produce optical path difference by above-mentioned means.
The double frequency light supply apparatus that the utility model embodiment is provided has the following advantages that：
1. there are two resonators (the first resonator and the second resonator) in the double frequency light supply apparatus, and the two resonators have
, also there are different parts (the first polarization sections 401 and the second polarization sections 402), the first polarization in common part (common Cheng Guang sections)
Section 401 is different with the light path of the second polarization sections 402 to produce different frequencies, obtains double-frequency laser, and the double frequency light supply apparatus is different
In two combinations of independent monochromatic sources, the first resonator and the second resonator share identical gain media 30, identical
Pump unit 10, therefore the double-frequency laser for producing can realize difference interference after its polarization state is adjusted to unanimously, can be used for
The accurate measurement of various physical quantitys, and the laser of two independent single-frequency laser generations can not occur difference interference.
2., due to there is non-co- journey light path, the first polarization sections 401 and the second polarization sections 402 are separate, therefore adjust it
In the frequency of a laserresonator do not interfere with the frequency of another laserresonator, therefore it is convenient to change frequency, moreover it is possible to
Realize the frequency-tuning range in broadband；
3. due to there is common Cheng Guang sections so that the change of the external environment such as temperature is basic to the frequency influence of two resonators
Identical, when difference interference is carried out using first frequency laser and second frequency laser, its frequency-splitting can offset this shadow
Ring, therefore the double frequency light supply apparatus has stronger anti-interference.
As a kind of improvement project of the utility model embodiment, such as Fig. 3, when be between pump unit and coupling unit from
During by space, double frequency light supply apparatus also includes the collimation focusing unit 60 being arranged between pump unit 10 and coupling unit 20,
In collimating pump light and focusing on coupling unit 20.Specifically, the type and structure of the coupling unit 20 can bases
Transmission medium (optical fiber or free space) reasonable selection of the double frequency light supply apparatus.
Further, the RSPUDTcell of the double frequency light supply apparatus can be annular, or linear.Double frequency swashs
The transmission medium of light can be optical fiber, and the optical fiber is polarization maintaining optical fibre；Can also be free space, or optical fiber and free space
Combination, be described in detail below by way of several specific embodiments.
Embodiment one：
Such as Fig. 1, in the utility model first embodiment, double frequency light supply apparatus has above-mentioned basic structure, i.e.,：Pumping list
Unit 10, coupling unit 20, RSPUDTcell, gain media 30 and output unit 50, the present embodiment is not repeated.At this
In embodiment, common Cheng Guang sections and non-co- Cheng Guang sections form the RSPUDTcell of annular, and use Optical Fiber Transmission.Common Cheng Guanglu
Section includes the first journey section and the second journey section, the altogether positioned at non-co- Cheng Guang sections opposite side altogether positioned at non-co- Cheng Guang sections side
Journey section connects one end of the first polarization sections 401 and one end of the second polarization sections 402 by the first polarization spectro unit 701 altogether,
Second altogether journey section by the second polarization spectro unit 702 connect the first polarization sections 401 the other end and the second polarization sections 402 it is another
One end, the first polarization spectro unit 701 therein and the second polarization spectro unit 702 are reflected S light, and P light is carried out
Transmission, and then S light and P light are separated, respectively enters the first polarization sections 401 and the second polarization sections 402, will not make S light and P light
Obscure in path.Gain media 30 can be luminous to both sides, and the light that it sends forms first frequency laser through the first resonator, through the
Two resonators form second frequency laser, and now first frequency laser and second frequency laser direction are opposite.Gain media 30
Can be luminous to side, S light therein and P light are by 702 points of above-mentioned first polarization spectro unit 701 and the second polarization spectro unit
The first resonator and the second resonator are not imported, and now first frequency laser is identical with second frequency laser direction.
In all -fiber light path of the present embodiment, the existence form of gain media 30 can have two kinds, first, gain media 30
It is an independent gain device, is connected on the optical fiber of the first common journey section or the second common journey section.Second, gain media 30 and altogether
Both the optical fiber in Cheng Guang sections unites two into one, and when such as using the doped fiber with gain function for common Cheng Guang sections, adulterate light
Fine had both been gain media, was again common Cheng Guang sections.
Further, it is single that the pump light that the pump unit 10 in the present embodiment sends enters coupling by input optical fibre 801
Unit 20, the coupling unit 20 can use wavelength division multiplexer, coupling unit 20 to connect gain media 30 by the first optical fiber 802,
The gain media 30 can be above-mentioned separate gain device, or close two with the first optical fiber 802 or with the second optical fiber 803
It is one.When using gain device, the both sides of gain media 30 connect the first optical fiber 802 and the second optical fiber 803 respectively, and this first
The optical fiber 803 of optical fiber 802 and second is respectively the transmission medium of the first common journey section and the second common journey section.First polarization sections 401 and
Two polarization sections 402 are respectively adopted the 3rd optical fiber 804 and the 4th optical fiber 805 as transmission medium.The other end of the first optical fiber 802 leads to
Cross the first polarization spectro unit 701 and be connected to one end of the 3rd optical fiber 804 and one end of the 4th optical fiber 805, in the second optical fiber 803
The other end by the second polarization spectro unit 702 be connected to the 3rd optical fiber 804 the other end and the 4th optical fiber 805 it is another
S light is reflexed to the 3rd optical fiber 804 by end, the first polarization spectro unit 701 and the second polarization spectro unit 702, by P light transmissions extremely
4th optical fiber 805.
In the present embodiment, such as Fig. 1, output unit 50 can be arranged at common Cheng Guang sections, that is, be arranged at the first optical fiber 802
Or second on optical fiber 803.When first frequency laser is identical with second frequency Laser Transmission direction, output unit 50 is using single
To output unit, when first frequency laser and second frequency Laser Transmission in opposite direction, output unit 50 uses bidirectional output
Unit 503.
In the present embodiment, such as Fig. 2, output unit 50 can also be arranged at the first polarization sections 401 and the second polarization sections
402, i.e., the first output unit 501 is set on the 3rd optical fiber 804, the second output unit 502 is set on the 4th optical fiber 805.
With further reference to Fig. 1, in order to further prevent first frequency laser and second frequency laser to be subject to reverse laser
Interference, can respectively set an isolator 90 on the 3rd optical fiber 804 and the 4th optical fiber 805.When first frequency laser and the second frequency
During rate laser symport, isolator can also be arranged on the first optical fiber 802 or the second optical fiber 803.
In the present embodiment, laser is transmitted in resonator and understands lossy, in order to avoid the first resonator and the second resonance
The luminous power in chamber has big difference, and respectively can set an adjustable damping unit 100 on the 3rd optical fiber 804 and the 4th optical fiber 805,
Or an adjustable damping unit 100 is set in alternative one.
In the present embodiment, single longitudinal mode unit 110 can also be set on the first optical fiber 802 or the second optical fiber 803, or
The one single longitudinal mode unit 110 of each setting on the 3rd optical fiber 804 and the 4th optical fiber 805, the single longitudinal mode for realizing laser, so as to
Realize the coherence high of laser, or even close to preferable coherent source.The single longitudinal mode unit 110 can be narrow band filter,
It can be unit that F-P interferometers by two collimation lenses and therebetween are constituted.
Embodiment two：
Such as Fig. 3, in the utility model second embodiment, double frequency light supply apparatus has above-mentioned basic structure, i.e.,：Pumping list
Unit 10, coupling unit 20, RSPUDTcell, gain media 30 and output unit 50, the present embodiment is not repeated.At this
In embodiment, common Cheng Guang sections and non-co- Cheng Guang sections form the RSPUDTcell of annular, and use free space transmission.That is,
Unlike the double frequency light supply apparatus that the double frequency light supply apparatus that the utility model second embodiment is provided is provided from embodiment one, this
Transmission medium is transformed to free space by embodiment, rather than using optical fiber.Due to using free space transmission, above-mentioned coupling list
Unit 20 can use dichroic mirror, and increase several speculums 120 and the dichroic mirror and form annular light path.Above-mentioned gain media 30
It is independent gain device.Or, gain media 30 uses gain gas, and the gain gas are sealed by a container, the container
The direct gapless in two ends butts up against adjacent devices, or, the two ends of the container seal and also have one section of freedom apart from adjacent devices
Space.
Further, collimation focusing unit 60 can also be set between pump unit 10 and coupling unit 20.
In output facet, output unit 50 is set preferably on common Cheng Guanglu, can specifically include an outgoing mirror 504, when
When first frequency laser and second frequency laser symport, can be exported by the outgoing mirror 504.If first frequency laser and
During second frequency laser reverse transfer, it is also possible to exported in outgoing mirror 504.Can also be in outgoing mirror 504 outbound course
Prism 505 is set, half-reflecting half mirror 506 is set in another outbound course of the outgoing mirror 504, first frequency laser passes through the rib
Mirror 505 reflexes to half-reflecting half mirror 506, and second frequency laser is directly exported from outgoing mirror 504 to half-reflecting half mirror 506, two beams
Laser equidirectional output at half-reflecting half mirror 506, is separated when to be used.
Certainly, the above way of output is only preferred scheme, it is also possible in the first polarization sections 401 and the second polarization sections 402
Output unit 50 is set.
Identically with above-described embodiment one, an isolation can also respectively be set in the first polarization sections 401 and the second polarization sections 402
Device 90, or when first frequency laser and second frequency laser symport, isolator 90 is set on Yu Gongcheng light section.
Further, a Dan Zong can also be set as embodiment one is each in the first polarization sections 401 and the second polarization sections 402
Form unit 110, or one single longitudinal mode unit 110 is set in common Cheng Guang sections.
Further, adjustable declining can also be set in the first polarization sections 401 or the second polarization sections 402 such as embodiment one
Subtract unit 100.Or an adjustable damping unit 100 is respectively set in the first polarization sections 401 and the second polarization sections 402.
Embodiment three：
Such as Fig. 4, in the utility model 3rd embodiment, double frequency light supply apparatus has above-mentioned basic structure, i.e.,：Pumping list
Unit 10, coupling unit 20, RSPUDTcell, gain media 30 and output unit 50, the present embodiment is not repeated.At this
In embodiment, common Cheng Guang sections and non-co- Cheng Guang sections form the RSPUDTcell of annular, and are mixed using free space and optical fiber
Close transmission.That is, the double frequency light supply apparatus that the double frequency light supply apparatus that the utility model 3rd embodiment is provided is provided with embodiment one
Unlike, the first polarization sections 401 and the second polarization sections 402 is transmitted by the 5th optical fiber 806 and six fiberses 807 respectively,
Make common Cheng Guang sections by free space transmission, gain media 30 can be independent gain device；Or gain media 30 is adopted
With gain gas, the gain gas are sealed by a container, and the direct gapless in two ends of the container butts up against adjacent devices, or should
The two ends of container seal and also have one section of free space apart from adjacent devices.Or, make the first polarization sections 401 and the second polarization sections
402 respectively by free space transmission, common Cheng Guang sections is passed through Optical Fiber Transmission.When common Cheng Guang sections use free space transmission
When, coupling unit 20 preferably uses dichroic mirror, and increases several speculums 120 and the dichroic mirror and form annular light path.When altogether
When Cheng Guang sections use Optical Fiber Transmission, coupling unit 20 can use wavelength division multiplexer, and inclined in the first polarization sections 401 and second
Increase some speculums 120 in section of shaking 402 to form two independent optical paths.
On output facet, when common Cheng Guang sections are free space transmission, output unit 50 can be arranged at common Cheng Guang
Section, with described in embodiment two, the present embodiment is repeated no more its structure.Output unit 50 can also be arranged at the first polarization sections
401 and second polarization sections 402, specifically, first output unit 501 is set in the first polarization sections 401, in the second polarization sections 402
Second output unit 502 is set.When common Cheng Guang sections are Optical Fiber Transmission, output unit 50 is preferably provided at common Cheng Guang sections,
Using a unidirectional or bidirectional output unit.
With shown in above-described embodiment one, the double frequency light supply apparatus can also in position set isolator 90, adjustable decline
Subtract unit and single longitudinal mode unit, its set location and operation principle are specifically repeated no more as shown in embodiment one or two.
Example IV：
Such as Fig. 5, in the utility model fourth embodiment, double frequency light supply apparatus has above-mentioned basic structure, i.e.,：Pumping list
Unit 10, coupling unit 20, RSPUDTcell, gain media 30 and output unit 50, the present embodiment is not repeated.At this
In embodiment, common Cheng Guang sections and non-co- Cheng Guang sections form linear RSPUDTcell, i.e., straight cavity configuration.And transmission medium is
All -fiber, using separate gain device or together, the optical fiber in Cheng Guang sections unites two into one gain media 30.Wherein, common Cheng Guanglu
Section includes the first journey section and the second journey section altogether altogether, pump unit 10, coupling unit 20, first journey section, non-co- Cheng Guang sections, the altogether
Two common journey sections and output unit 50 are sequentially set, and gain media 30 is arranged at the first common journey section or the second common journey section, and first is total to
Journey section connects one end of the first polarization sections 401 and one end of the second polarization sections 402, second by the first polarization spectro unit 701
Altogether journey section by the second polarization spectro unit 702 connect the first polarization sections 401 the other end and the second polarization sections 402 it is another
End.Journey section, first the 401, second common journey section of polarization sections and output unit 50 or hysteroscope form straight lumen type to coupling unit 20, first altogether
The first resonator, journey section, the second polarization sections 402, second journey section and output unit 50 or the hysteroscope altogether altogether of coupling unit 20, first
Form the second resonator of straight lumen type.
Further, the above-mentioned first common journey section uses the 7th optical fiber 808, gain media 30 to be arranged on the 7th optical fiber 808,
Above-mentioned second common journey section uses first polarization sections 401 in the 8th optical fiber 809, non-co- Cheng Guang sections to use the 9th optical fiber 810, second
One end of the tenth optical fiber 811 of use of polarization sections 402, the 9th optical fiber 810 and the tenth optical fiber 811 passes through the first polarization spectro unit
701 are connected to the 7th optical fiber 808, and the other end of the 9th optical fiber 810 and the tenth optical fiber 811 passes through the second polarization spectro unit 702
It is connected to the 8th optical fiber 809.
In the present embodiment, S light is reflexed to the 9th by the first polarization spectro unit 701 and the second polarization spectro unit 702
Optical fiber 810, by P light transmissions to the tenth optical fiber 811.
In the double frequency light supply apparatus shown in Fig. 5, output unit 50, S light and P light point are set in the end of the 8th optical fiber 809
Laser is not formed in the first resonator and the second internal oscillation, output unit 50 doubles as hysteroscope and output.
In another embodiment, such as Fig. 6, the first output can be respectively provided with the 9th optical fiber 810 and the tenth optical fiber 811
The output unit 502 of unit 501 and second, now needs to set hysteroscope 140, such as Fig. 6 in the end of the 8th optical fiber.
In the present embodiment, single longitudinal mode unit 110 can also be set on the 7th optical fiber 808 or the 8th optical fiber 809, or
Person respectively sets a single longitudinal mode unit 110 on the 9th optical fiber 810 and the tenth optical fiber 811.
In the present embodiment, adjustable damping unit 100 can also be set on the 9th optical fiber 810 or the tenth optical fiber 811,
Or respectively set an adjustable damping unit 100 on the 9th optical fiber 810 and the tenth optical fiber 811.
Embodiment five：
Such as Fig. 7, in the embodiment of the utility model the 5th, double frequency light supply apparatus has above-mentioned basic structure, i.e.,：Pumping list
Unit 10, coupling unit 20, RSPUDTcell, gain media 30 and output unit 50, the present embodiment is not repeated.At this
In embodiment, common Cheng Guang sections and non-co- Cheng Guang sections form linear RSPUDTcell, i.e., straight cavity configuration.Wherein, common Cheng Guang
Section only includes the 3rd journey section 130 altogether, pump unit 10, coupling unit the 20, the 3rd journey section 130, non-co- Cheng Guang sections and defeated altogether
Go out unit 50 sequentially to set, output unit 50 includes the first output unit 501 and the second output unit 502, the first output unit
501 ends for being arranged at the first polarization sections 401, the second output unit 502 is arranged at the end of the second polarization sections 402.Gain is situated between
Matter 30 is arranged at the 3rd common journey section 130, and the 3rd common journey section 130 is by the first polarization sections 401 of connection of the 3rd polarization spectro unit 703
One end and the second polarization sections 402 one end.The output of the 130, first polarization sections of journey section 401 and first altogether of coupling unit the 20, the 3rd
Unit 501 constitutes the first resonator, common journey the 130, second polarization sections 402 of section of coupling unit the 20, the 3rd and the second output unit 502
Constitute the second resonator.S light can be made to be transmitted in the first resonator by the 3rd polarization spectro unit 703, make P light humorous second
Shake and transmit in chamber.
Further, the above-mentioned 3rd common journey the 130, first polarization sections 401 of section and the second polarization sections 402 use optical fiber conduct
Transmission medium, or using free space as transmission medium, or use optical fiber and free space mixed transport.When the 3rd
When journey section 130 is using Optical Fiber Transmission altogether, gain media 30 is closed using separate gain device or with the optical fiber of the 3rd common journey section 130
Two is one.When the 3rd journey section 130 is using free space transmission altogether, gain media 30 can use separate gain device；Or adopt
With gain gas, the gain gas are sealed by a container, and the direct gapless in two ends of the container butts up against adjacent devices, or should
The two ends of container seal and also have one section of free space apart from adjacent devices.
In the present embodiment, single longitudinal mode unit 110 can also be set in the first polarization sections 401 and the second polarization sections 402,
Or set a single longitudinal mode unit 110 on the 3rd altogether journey section 130.
In the present embodiment, adjustable damping unit can also be set in the first polarization sections 401 and the second polarization sections 402
100, or, set an adjustable damping unit 100 in the first polarization sections 401 or the second polarization sections 402.
Embodiment six：
Such as Fig. 8, in the utility model sixth embodiment, double frequency light supply apparatus has above-mentioned basic structure, i.e.,：Pumping list
Unit 10, coupling unit 20, RSPUDTcell, gain media 30 and output unit 50, the present embodiment is not repeated.At this
In embodiment, common Cheng Guang sections and non-co- Cheng Guang sections form linear RSPUDTcell, i.e., straight cavity configuration, and transmission medium is
Free space.Gain media 30 uses separate gain device；Or gain media 30 uses gain gas, the gain gas are by one
Container is sealed, and the direct gapless in two ends of the container butts up against adjacent devices, or the two ends of the container seal and apart from adjacent
Device also has one section of free space.Specifically, the present embodiment is similar with the double frequency light supply apparatus that example IV is provided, its common Cheng Guang
Section includes the first common journey section and the second common journey section, the common journey section of coupling unit 20, first, non-co- Cheng Guang sections, the second common journey section
Sequentially set with output unit 50, gain media 30 is arranged at the first common journey section or the second common journey section, the first common journey section passes through
First polarization spectro unit 701 connects one end of the first polarization sections 401 and one end of the second polarization sections 402, and the second common journey section is logical
Cross the second polarization spectro unit 702 and connect the other end of the first polarization sections 401 and the other end of the second polarization sections 402.Coupling is single
The common journey section of unit 20, first, first the 401, second common journey section of polarization sections and output unit 50 form the first resonator of straight lumen type, coupling
Close the second resonance that the common journey section of unit 20, first, second the 402, second common journey section of polarization sections and output unit 50 form straight lumen type
Chamber.Difference is that journey Duan Jun uses free space transmission altogether for the first common journey section, non-co- Cheng Guang sections and second, you can by sky
Gas is transmitted, without using optical fiber.In the present embodiment, some speculums 120 need to be increased, makes the first polarization spectro unit 701
The S light reflected with the second polarization spectro unit 702 is according to certain path transmission.Output unit 50 is preferably disposed on the second polarization
The outbound course of spectrophotometric unit 702.
Similarly, the present embodiment can also set single longitudinal mode unit in the first polarization sections 401 and the second polarization sections 402
110, or in the first common journey section or the second common single longitudinal mode units 110 of journey Duan Shangshe mono-.
Adjustable damping unit 100 can also be set in the first polarization sections 401 and the second polarization sections 402, or, first
The polarization sections 402 of polarization sections 401 or second set an adjustable damping unit 100.
Embodiment seven：
Such as Fig. 9, in the embodiment of the utility model the 7th, double frequency light supply apparatus has above-mentioned basic structure, i.e.,：Pumping list
Unit 10, coupling unit 20, RSPUDTcell, gain media 30 and output unit 50, the present embodiment is not repeated.At this
In embodiment, common Cheng Guang sections and non-co- Cheng Guang sections form linear RSPUDTcell, i.e., straight cavity configuration, and transmission medium is
The combination of free space and optical fiber.Specifically, the present embodiment is similar with the double frequency light supply apparatus that example IV is provided, its common Cheng Guang
Section includes the first common journey section and the second common journey section, the common journey section of coupling unit 20, first, non-co- Cheng Guang sections, the second common journey section
Sequentially set with output unit 50, gain media 30 is arranged at the first common journey section or the second common journey section, the first common journey section passes through
First polarization spectro unit 701 connects one end of the first polarization sections 401 and one end of the second polarization sections 402, and the second common journey section is logical
Cross the second polarization spectro unit 702 and connect the other end of the first polarization sections 401 and the other end of the second polarization sections 402.Coupling is single
The common journey section of unit 20, first, first the 401, second common journey section of polarization sections and output unit 50 form the first resonator of straight lumen type, coupling
Close the second resonance that the common journey section of unit 20, first, second the 402, second common journey section of polarization sections and output unit 50 form straight lumen type
Chamber.Difference is that the first common journey section and the second common journey Duan Jun use free space transmission, you can transmitted by air, without
Using optical fiber, gain media 30 is the gain device for being arranged on the first common journey section or the second common journey section.Or gain media 30 is adopted
With gain gas, the gain gas are sealed by a container, and the direct gapless in two ends of the container butts up against adjacent devices, or should
The two ends of container seal and also have one section of free space apart from adjacent devices.First polarization sections 401 and the second polarization sections 402 are used
Optical Fiber Transmission.Output unit 50 is preferably disposed on the outbound course of the second polarization spectro unit 702, naturally it is also possible to inclined first
The polarization sections 402 of section of shaking 401 and second respectively set an output unit 50.
In another embodiment, the transmission medium of the first common journey section and the second common journey section can also be set to optical fiber, gain
Medium 30 unites two into one with the optical fiber of the first common journey section or the second common journey section, or uses separate gain device.
The transmission medium of the first polarization sections 401 and the second polarization sections 402 is set to free space.Output unit 50 preferably sets
It is placed in the first common journey section or the second common journey section.
Similarly, the present embodiment can also set single longitudinal mode unit in the first polarization sections 401 and the second polarization sections 402
110, or in the first common journey section or the second common single longitudinal mode units 110 of journey Duan Shangshe mono-.
Adjustable damping unit 100 can also be set in the first polarization sections 401 and the second polarization sections 402, or, first
The polarization sections 402 of polarization sections 401 or second set an adjustable damping unit 100.
The double frequency light supply apparatus that the utility model embodiment is provided is common using the resonator of special RSPUDTcell, i.e., two
With identical pump unit 10 and gain media 30, that is, different frequency laser is obtained in that, can be carried out using the double-frequency laser again outer
Difference interference.Compared with traditional double frequency light supply apparatus, the regulation of its frequency is easy, and adjustable range is big, and strong interference immunity.
It is only as described above preferred embodiment of the present utility model, is not used to limit the utility model, it is all at this
Any modification, equivalent and improvement made within the spirit and principle of utility model etc., should be included in the utility model
Protection domain within.
Claims (10)
1. a kind of double frequency light supply apparatus, it is characterised in that including pump unit, RSPUDTcell and for by the pumping list
The coupling pump light that unit sends to the RSPUDTcell coupling unit；The RSPUDTcell includes common Cheng Guang sections and non-
Common Cheng Guang sections, the common Cheng Guang sections are provided with gain media, and the non-co- Cheng Guang sections include individual transmission and light path is different
The first polarization sections and the second polarization sections, first polarization sections are different with the laser polarization direction that the second polarization sections are transmitted；Institute
State common Cheng Guang sections and first polarization sections constitute the first resonator, the common Cheng Guang sections and second polarization sections are constituted
Second resonator；The double frequency light supply apparatus also includes the first frequency laser and described for first resonator to be produced
The output unit of the second frequency laser output that the second resonator is produced.
2. double frequency light supply apparatus as claimed in claim 1, it is characterised in that the common Cheng Guang sections and non-co- Cheng Guang sections shape
The RSPUDTcell for circularizing, the common Cheng Guang sections are included positioned at the first common journey section of the non-co- Cheng Guang sections side and position
In the second common journey section of the non-co- Cheng Guang sections opposite side, the described first common journey section is by the first polarization spectro unit connection institute
One end of the first polarization sections and one end of the second polarization sections are stated, the described second common journey section connects institute by the second polarization spectro unit
The other end of the first polarization sections and the other end of the second polarization sections are stated, the light that the gain media sends is through first resonator
The first frequency laser is formed, the light that the gain media sends forms the second frequency and swashs through second resonator
Light.
3. double frequency light supply apparatus as claimed in claim 1, it is characterised in that the common Cheng Guang sections and non-co- Cheng Guang sections shape
Into linear RSPUDTcell, the common Cheng Guang sections include the first journey section and the second journey section altogether altogether, the coupling unit, described
Journey section and the output unit are sequentially set altogether for first common journey section, the non-co- Cheng Guang sections, described second, the gain media
The described first common journey section and/or the second common journey section are arranged at, the described first common journey section is by the first polarization spectro unit connection institute
One end of the first polarization sections and one end of the second polarization sections are stated, the described second common journey section connects institute by the second polarization spectro unit
State the other end of the first polarization sections and the other end of the second polarization sections.
4. double frequency light supply apparatus as claimed in claim 1, it is characterised in that the common Cheng Guang sections and non-co- Cheng Guang sections shape
Into linear RSPUDTcell, the common Cheng Guang sections include the 3rd altogether journey section, the coupling unit, the described 3rd altogether journey section,
The non-co- Cheng Guang sections and the output unit are sequentially set, and the gain media is arranged at the described 3rd common journey section, described
3rd common journey section connects first polarization sections and the second polarization sections by the 3rd polarization spectro unit.
5. double frequency light supply apparatus as claimed in claim 1, it is characterised in that the output unit is arranged at the common Cheng Guanglu
Section；
Or, the output unit includes being arranged at the first output unit of first polarization sections and to be arranged at described second inclined
Second output unit of section of shaking.
6. double frequency light supply apparatus as claimed in claim 1, it is characterised in that be provided with a single longitudinal mode single in the common Cheng Guang sections
Unit, or it is respectively provided with a single longitudinal mode unit in first polarization sections and the second polarization sections.
7. double frequency light supply apparatus as claimed in claim 1, it is characterised in that polarized in first polarization sections and/or second
Section is provided with adjustable damping unit.
8. the double frequency light supply apparatus as described in any one of claim 1~7, it is characterised in that the common Cheng Guang sections, first inclined
The transmission medium of section of shaking and the second polarization sections is optical fiber.
9. the double frequency light supply apparatus as described in any one of claim 1~7, it is characterised in that the common Cheng Guang sections, first inclined
The transmission medium of section of shaking and the second polarization sections is free space.
10. the double frequency light supply apparatus as described in any one of claim 1~7, it is characterised in that the transmission in the common Cheng Guang sections
Medium is free space, and the transmission medium of first polarization sections and the second polarization sections is optical fiber；Or, the common Cheng Guang sections
Transmission medium be optical fiber, the transmission medium of first polarization sections and the second polarization sections is free space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620942944.5U CN206211258U (en) | 2016-08-25 | 2016-08-25 | A kind of double frequency light supply apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620942944.5U CN206211258U (en) | 2016-08-25 | 2016-08-25 | A kind of double frequency light supply apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206211258U true CN206211258U (en) | 2017-05-31 |
Family
ID=58759743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620942944.5U Active CN206211258U (en) | 2016-08-25 | 2016-08-25 | A kind of double frequency light supply apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206211258U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107785773A (en) * | 2016-08-25 | 2018-03-09 | 深圳大学 | A kind of double frequency light supply apparatus |
| WO2020155249A1 (en) * | 2019-01-31 | 2020-08-06 | 深圳大学 | Dual-frequency light source |
| CN111509546A (en) * | 2019-01-31 | 2020-08-07 | 深圳大学 | Double-frequency light source |
-
2016
- 2016-08-25 CN CN201620942944.5U patent/CN206211258U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107785773A (en) * | 2016-08-25 | 2018-03-09 | 深圳大学 | A kind of double frequency light supply apparatus |
| WO2020155249A1 (en) * | 2019-01-31 | 2020-08-06 | 深圳大学 | Dual-frequency light source |
| CN111509546A (en) * | 2019-01-31 | 2020-08-07 | 深圳大学 | Double-frequency light source |
| CN111509546B (en) * | 2019-01-31 | 2024-08-27 | 深圳大学 | Dual-frequency light source |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206211258U (en) | A kind of double frequency light supply apparatus | |
| CN101483310B (en) | Polarization stablizing laser | |
| KR101501509B1 (en) | Dual Optical-comb Femto-second Optical Fiber Laser | |
| CN107084713B (en) | Method for measuring angular velocity and device based on optical-electronic oscillator | |
| GB2185567A (en) | Optical frequency analyzer | |
| US5040896A (en) | Three-crystal temperature-compensated reference interferometer for source wavelength stabilization | |
| CN101900556A (en) | Bicyclo-Brillouin fiber optic gyro | |
| CN107843248A (en) | Self-injection locking resonance type optical gyroscope and its method of work | |
| US3841758A (en) | Rotation sensitive retarder | |
| CN108344408A (en) | Angular velocity measurement device based on tunable optical electrical oscillator | |
| CN104950311A (en) | OEO (optoelectronic oscillator) based wide-range and high-precision absolute distance measurement system with self-calibration function | |
| CN109357672A (en) | A method of the bi-directional light based on circulator structure carries microwave resonance system and its detection angular speed | |
| CN206236953U (en) | A kind of double frequency light source | |
| CN104634369B (en) | A kind of ring laser sensor | |
| CN103868507B (en) | The double; two interference type optical fiber gyroscope of difference based on tail optical fiber coupling polarizes nonreciprocal error inhibition method | |
| CN104634370B (en) | Laser-based sensor | |
| CN104655159A (en) | Sensor of orthogonal polarization laser device | |
| WO2018035806A1 (en) | Dual-frequency optical source device | |
| CN107785772A (en) | A kind of double frequency light source | |
| CN107785773A (en) | A kind of double frequency light supply apparatus | |
| WO2018035813A1 (en) | Dual-frequency optical source | |
| CN103047979A (en) | Passive laser gyroscope | |
| CN202906186U (en) | Multi-wavelength erbium-doped photonic crystal fiber laser | |
| CN204535728U (en) | A kind of sensor of orthogonal polarization laser | |
| CN103368045A (en) | Narrow-linewidth single-frequency fiber laser based on all-fiber slow-light element |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |