CN110165540A - Compact alternately pumps and electric-optically Q-switched twin wavelength laser output method and laser - Google Patents
Compact alternately pumps and electric-optically Q-switched twin wavelength laser output method and laser Download PDFInfo
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- CN110165540A CN110165540A CN201910441950.0A CN201910441950A CN110165540A CN 110165540 A CN110165540 A CN 110165540A CN 201910441950 A CN201910441950 A CN 201910441950A CN 110165540 A CN110165540 A CN 110165540A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/0912—Electronics or drivers for the pump source, i.e. details of drivers or circuitry specific for laser pumping
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/094026—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light for synchronously pumping, e.g. for mode locking
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/10—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating
- H01S3/11—Mode locking; Q-switching; Other giant-pulse techniques, e.g. cavity dumping
- H01S3/1123—Q-switching
- H01S3/115—Q-switching using intracavity electro-optic devices
Abstract
The invention discloses a kind of compacts alternately to pump and electric-optically Q-switched twin wavelength laser output method and laser, the laser includes: dual wavelength total reflective mirror, lath gain media, prism, aperture, polarizing film, electric-optically Q-switched module, dual wavelength quarter wave plate, outgoing mirror, the first pumping source and the second pumping source, wherein: the dual wavelength total reflective mirror, lath gain media, prism, aperture, polarizing film, electric-optically Q-switched module, dual wavelength quarter wave plate and outgoing mirror constitute laser resonator, and successively sequentially arrange along laser light path direction.Pass through alternately the first side of top of pump bar gain media and second side in the present invention program, realize that first wave length and second wave length double-pulse laser alternately export, laser volume can substantially be reduced, be conducive to improve the portability of laser, since wavelength selection can be carried out, so that laser has more application scenarios, the applicability of laser has been widened.
Description
Technical field
The present invention relates to solid state laser field, alternately pumping is defeated with electric-optically Q-switched dual wavelength for especially a kind of compact
Method and laser out.
Background technique
The controllable output of dual-wavelength laser is with important application prospects in the fields such as military, civilian, frequency multiplication and frequency, is swashing
Optic communication, feature identification field have potential application.The method that dual wavelength alternately exports at present, there are mainly three types of realize
Mode, being respectively as follows: the first implementation is two-way laser, is pumped through automatically controlled mode and is pumped respectively per laser all the way,
Realize two kinds of wavelength laser outputs, two kinds of wavelength lasers export simultaneously or there is certain interval in the output time, the first realization
The advantages of mode be it is individually designed per laser all the way, two kinds of wavelength laser efficiency can be accomplished ultimate attainment, and two kinds of wavelength swash
Light combination is flexible, the disadvantage is that it is big to occupy volume due to being individual two-way laser.Second of implementation is double gains
The laser of medium pumps each gain media again by automatically controlled mode respectively, thus realize that dual wavelength alternately exports, this
Kind mode is because of common resonant chamber, compared with the first implementation, reduces volume, while also there is dual wavelength alternately to export
Flexible advantage, the disadvantage is that, in order to realize that dual-wavelength laser energy approximation is identical, needing to swash strong gain because of common resonant chamber
Light is inhibited, thus eventually reduces the whole efficiency of laser.The third implementation is single laser medium, by humorous
Shake chamber suppression loss, realizes that dual wavelength exports simultaneously, and this mode volume is minimum, but dual wavelength cannot be exported alternately, and be imitated
Rate is very low, above has certain limitation in application.From the foregoing, it will be observed that the method that dual wavelength alternately exports in the prior art all has not
With the deficiency of degree.
Summary of the invention
In order to solve above-mentioned the technical problems existing in the prior art, the present invention proposes that a kind of compact alternately pumps and electricity
The twin wavelength laser output method and laser of light tune Q.
According to an aspect of the invention, it is proposed that a kind of compact alternately pumps and electric-optically Q-switched twin wavelength laser output laser,
The laser includes: dual wavelength total reflective mirror, lath gain media, prism, aperture, polarizing film, electric-optically Q-switched module, double
Wavelength quarter wave plate, outgoing mirror, the first pumping source and the second pumping source, in which:
The dual wavelength total reflective mirror, lath gain media, prism, aperture, polarizing film, electric-optically Q-switched module, dual wavelength
Quarter wave plate and outgoing mirror constitute laser resonator, and successively sequentially arrange along laser light path direction；
The lath gain media, the first pumping source and the second pumping source form laser pumping module, wherein described the
One pumping source is located at the first side of top of lath gain media, and second pumping source is located at the top second of lath gain media
The pump light that side, first pumping source and the second pumping source issue is irradiated on the lath gain media, can make the plate
Gain media generates population inversion.
Optionally, the dual wavelength total reflective mirror is one, and there is first wave length part to penetrate and the high anti-espionage of second wave length
Eyeglass or the total reflective mirror are the eyeglasses with first wave length and the high anti-espionage of second wave length.
Optionally, the prism is 45 degree of parallelogram prisms, and effect is to make first wave length and second wave length
The compact synthesis of laser optical path.
Optionally, the polarizing film surface is coated with the P light high transmittance film and S light high-reflecting film of first wave length and second wave length, with
Optical axis is placed in Brewster's angle or 45 degree of angles.
Optionally, the laser further includes that lath gain media is heat sink, described in the heat sink abutting of lath gain media
Lath gain media, and it is located at the lower section of the lath gain media, for controlling the operating temperature of the lath gain media.
Optionally, the laser to further include that pumping source is heat sink, the pumping source is heat sink be close to first pumping source and
Second pumping source, and it is located at the top of first pumping source and the second pumping source, for controlling first pumping source and the
The operating temperature of two pumping sources.
Optionally, the laser further includes LD power supply, in which: the LD power supply and first pumping source and described the
Two pumping sources connection, for providing power supply for first pumping source and second pumping source.
Optionally, the laser further includes adjusting Q module drive system, the tune Q module drive system and electric-optically Q-switched mould
Block connection adjusts Q driving signal for applying for electric-optically Q-switched module.
Optionally, the laser further includes turn-key system, and the turn-key system and LD power supply adjust Q module drive system
Connection, for synchronizing control to LD power supply and tune Q module drive system.
According to another aspect of the invention, it is proposed that a kind of compact alternately pumps and electric-optically Q-switched twin wavelength laser output method,
Applied in laser as described above, which comprises
Voltage is applied to first pumping source, the pump light of output is carried out from the first side above the lath gain media
Pumping, laser resonator is in high loss state, when laser gain increases to the first preset gain value, closes the first pumping source
And 1/4 first wave length voltage is applied to the electric-optically Q-switched module, resonant cavity is in low-loss state, and output first wave length tune Q swashs
Light；
After preset time period, voltage is applied to second pumping source, the pump light of output is situated between from the lath gain
Second side is pumped above matter, and laser resonator is in high loss state, when laser gain increases to the second preset gain value
When, it closes the second pumping source and 1/4 second wave length voltage is applied to the electric-optically Q-switched module, resonant cavity is in low-loss state,
Export second wave length Q-switch laser；
It is repeated cyclically the first pumping source, the second pumping source and the pressurization of electric-optically Q-switched module and moves back pressure condition, obtain first wave
The output of long and second wave length double-pulse laser.
The invention proposes a kind of compacts alternately to pump and electric-optically Q-switched twin wavelength laser output method and laser, this hair
Bright scheme realizes first wave length and the double arteries and veins of second wave length by alternately the first side of top of pump bar gain media and second side
Impulse light alternately exports, and can substantially reduce laser volume, is conducive to the portability for improving laser, due to the present invention program
Wavelength selection can be carried out, so that laser has more application scenarios, therefore has widened the applicability of laser.
Detailed description of the invention
Fig. 1 is compact according to an embodiment of the invention alternately pumping and electric-optically Q-switched twin wavelength laser output laser
Top view；
Fig. 2 is compact according to an embodiment of the invention alternately pumping and electric-optically Q-switched twin wavelength laser output laser
Front view；
Fig. 3 is compact according to an embodiment of the invention alternately pumping and electric-optically Q-switched twin wavelength laser output laser portion
Divide the left view of component；
Fig. 4 be the first pumping source 11 according to an embodiment of the invention, the second pumping source 12 and electric-optically Q-switched module 6 when
Sequence figure；
Fig. 5 is the stream of compact alternating pumping and electric-optically Q-switched twin wavelength laser output method according to an embodiment of the invention
Cheng Tu.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with specific embodiment, and reference
Attached drawing, the present invention is described in more detail.
Fig. 1 is compact according to an embodiment of the invention alternately pumping and electric-optically Q-switched twin wavelength laser output laser
Top view, Fig. 2 are before compact according to an embodiment of the invention replaces pumping and electric-optically Q-switched twin wavelength laser output laser
View, Fig. 3 are compact according to an embodiment of the invention alternately pumping and electric-optically Q-switched twin wavelength laser output laser component members
The left view of device, as shown in Figure 1,2 and 3, the laser include: dual wavelength total reflective mirror 1, lath gain media 2, prism 3,
Aperture 4, polarizing film 5, electric-optically Q-switched module 6, dual wavelength quarter wave plate 7, outgoing mirror 8, the first pumping source 11 and the second pumping
Source 12, in which:
The dual wavelength total reflective mirror 1, lath gain media 2, prism 3, aperture 4, polarizing film 5, electric-optically Q-switched module 6,
Dual wavelength quarter wave plate 7 and outgoing mirror 8 constitute laser resonator, and successively sequentially arrange along laser light path direction；
The lath gain media 2, the first pumping source 11 and the second pumping source 12 form laser pumping module, wherein
First pumping source 11 is located at the first side of top of lath gain media 2, and second pumping source 12 is located at lath gain Jie
The pump light that top second side of matter 2, first pumping source 11 and the second pumping source 12 issue is irradiated to the lath gain
On medium 2, the lath gain media 2 can be made to generate population inversion.
Wherein, first side is different from second side, i.e., described first pumping source 11 and the second pumping source 12 are in the plate
Upright projection position on gain media 2 is not overlapped or intersects.
Fig. 4 be the first pumping source 11 according to an embodiment of the invention, the second pumping source 12 and electric-optically Q-switched module 6 when
Sequence figure, as shown in figure 4, the pumping time of the first pumping source 11 and the second pumping source 12 is staggered, i.e. 11 work of the first pumping source
When making, the second pumping source 12 does not work, and electric-optically Q-switched module 6 is the first pumping source 11 and the second pumping source at the time of applying voltage
12 pumping finish times applied 1/4 first wave length (strong spectrum to electric-optically Q-switched module 6 that is, at the end of the pumping of the first pumping source 11
Line or strong gain laser) voltage, when the second pumping source 12 pumping close to an end when, to electric-optically Q-switched module 6 apply 1/4 second wave
Long (weak spectral line or weak gain laser) voltage.After first wave length and second wave length laser discharge completely, electric-optically Q-switched module is turned off
6 voltage.
Specifically, compact alternately pumps the concrete operating principle with electric-optically Q-switched twin wavelength laser output laser are as follows:
Voltage is applied to the first pumping source 11, i.e. the first pumping source 11 is in running order, and the pump light of output is from plate
The first side of 2 top of gain media is pumped, and after pump light is absorbed by lath gain media 2, generates population inversion.Due to
The effect of dual wavelength quarter wave plate 7, when electric-optically Q-switched 6 no applied voltage of module, resonant cavity is in high loss state, cannot be formed
The output of first wave length laser, therefore inverted population constantly accumulates, laser gain is gradually increased until the first preset gain value, this
When close the first pumping source 11 and 1/4 first wave length voltage applied to electric-optically Q-switched module 6, resonant cavity is in low-loss state, the
One wavelength laser discharges rapidly, and exports first wave length Q-switch laser.
Wherein, the first preset gain value can increase for the laser after the first pumping source 11 the first prefixed time interval of work
Benefit value, it is preferable that the first preset gain value can be first wave length laser gain maximum value, first wave length laser gain maximum value
It can be obtained according to historical data；First wave length laser gain maximum value can also be by observing first wave length laser peak power
It obtains, the yield value when first wave length laser peak power is not further added by is first wave length laser gain maximum value.
After the release of first wave length Q-switch laser is complete, according to use demand, after postponing preset time period, pumped to second
Source 12 applies voltage, i.e. the second pumping source 12 is in running order, and the pump light of output is from second above lath gain media 2
Side is pumped, and after pump light is absorbed by lath gain media 2, generates population inversion.Due to the work of dual wavelength quarter wave plate 7
With, when electric-optically Q-switched 6 no applied voltage of module, resonant cavity is in high loss state, the output of second wave length laser cannot be formed,
Therefore inverted population constantly accumulates, and laser gain is gradually increased until the second preset gain value, the second pumping source is closed at this time
12 and 1/4 second wave length voltage is applied to electric-optically Q-switched module 6, resonant cavity is in low-loss state, and second wave length laser is released rapidly
It puts, exports second wave length Q-switch laser.
Wherein, preset time period can be configured according to the needs of practical application, and the present invention is not especially limited it.
Wherein, the second preset gain value can increase for the laser after the second pumping source 12 the second prefixed time interval of work
Benefit value, it is preferable that the second preset gain value can be second wave length laser gain maximum value, second wave length laser gain maximum value
It can be obtained according to historical data；Second wave length laser gain maximum value can also be by observing second wave length laser peak power
It obtains, the yield value when second wave length laser peak power is not further added by is second wave length laser gain maximum value.
It is repeated cyclically the first pumping source 11, the work of the second pumping source 12 and electric-optically Q-switched module 6 and the shape that stops working
State obtains first wave length and the output of second wave length double-pulse laser.
In the present embodiment, the pumping of top the first side and second side of lath gain media is located at by alternately pumping
Source realizes that first wave length and second wave length double-pulse laser alternately export, can substantially reduce laser volume, be conducive to improve
The portability of laser, in addition, since wavelength selection can be carried out, so that laser of the present invention has more application scenarios,
To widen the applicability of laser.
In an embodiment of the present invention, the dual wavelength total reflective mirror 1 is one, and there is first wave length part to penetrate and second
The eyeglass or the total reflective mirror 1 of the high anti-espionage of wavelength are the eyeglasses with first wave length and the high anti-espionage of second wave length.
In the laser of the present embodiment, the spectral line of first wave length and second wave length is strong and weak different, if not to the first wave of intense line
Long laser is inhibited, and just will increase the loss of resonator, cannot also export the second wave length laser of weak spectral line, therefore can be used
The mode that dual wavelength total reflective mirror 1 allows first wave length laser part to penetrate, to reduce total reflective mirror 1 to the reflectivity of intense line laser,
The loss of resonator is controlled, to realize first wave length and the output of second wave length double-pulse laser.
In an embodiment of the present invention, the lath gain media 2 is optics respectively to uniform dielectric or with polarization spy
The gain media of property, the determination factor of the length of the lath gain media 2 includes but is not limited to laser energy demand；The plate
The determination factor of 2 thickness of gain media includes but is not limited to absorption of crystal rate and absorption coefficient relationship；The lath gain is situated between
The determination factor of 2 width of matter includes but is not limited to pitch requirements and the pumping of first pumping source 11 and the second pumping source 12
The size in region.For example, when the spacing of first pumping source 11 and the second pumping source 12 is 1.3mm, pumping area in order to prevent
Domain is overlapping, it is assumed that Laser output diameter spot is 4mm, then 2 width of lath gain media is 8mm.In the present invention, to the plate
The shape and size of gain media 2 are not specifically limited, and those skilled in the art can be according to the needs of practical application for institute
The shape and size for stating lath gain media 2 are configured, and will be carried out so that the lath gain media 2 is cuboid as an example below
It illustrates, but it should be noted that the shape of the lath gain media 2 in the disclosure is not limited to cuboid, other shapes are same
Sample can be applicable in.
In an embodiment of the present invention, the prism 3 is 45 degree of parallelogram prisms, and effect is to make first wave
The long and compact synthesis of second wave length laser optical path.Using other optical path combiner parts, such as double Glan prisms or 45 degree of light splitting
The devices such as reflection can also realize the synthesis of the optical path of first wave length and second wave length laser, but be unfavorable for the compact of optical path synthesis.
In an embodiment of the present invention, the aperture 4 is the hot spot in order to export certain shapes.Due to the first pumping
In pump bar gain media 2, pumped region is non-regular shape for source 11 and the second pumping source 12, cannot be obtained good
Laser exports shape, therefore aperture 4 can be selected to carry out limit hole in the present embodiment, for example, circular aperture light can be selected
Door screen 4 is to form circular light spot.When needing other shapes hot spot to export, the shape of aperture 4 can be changed, also to obtain difference
The laser of shape laser hot spot exports.In the present invention, the shape of the aperture 4 is not specifically limited.
In an embodiment of the present invention, 5 surface of polarizing film be coated with first wave length and second wave length P light high transmittance film and
S light high-reflecting film is placed with optical axis in Brewster's angle or 45 degree of angles, and polarizing film 5 can also use PBS spectroscope, Glan prism
Substitution.
In an embodiment of the present invention, the electric-optically Q-switched module 6 includes but is not limited to electro-optic crystal and electrode, by changing
Become the electrode voltage, changes the refractive index of the electro-optic crystal.Two light pass surfaces of the electro-optic crystal are coated with first respectively
Wavelength and the double anti-reflection films of second wave length.
In an embodiment of the present invention, the electric-optically Q-switched module 6 is made or using longitudinal electric light using cross electro-optical effect
Effect is made.
In an embodiment of the present invention, the dual wavelength quarter wave plate 7 is coated with dual wavelength anti-reflection film, first wave length and second
Wavelength linearly polarized light becomes circularly polarized light after dual wavelength quarter wave plate 7.
In an embodiment of the present invention, the outgoing mirror 8 is coated with first wave length and second wave length part through film.First wave
Long and second wave length transmitance may be the same or different, and can carry out design parameter selection according to the actual situation.
In an embodiment of the present invention, as shown in figure 3, the laser further includes lath gain media heat sink 9, the plate
Gain media is heat sink 9 to be close to the lath gain media 2, and is located at the lower section of the lath gain media 2, for controlling
State the operating temperature of lath gain media 2.
In an embodiment of the present invention, as shown in figure 3, the laser further includes, pumping source is heat sink 10, the pumping source
Heat sink 10 are close to first pumping source 11 and the second pumping source 12, and are located at first pumping source 11 and the second pumping source 12
Top, for controlling the operating temperature of first pumping source 11 and the second pumping source 12.
In an embodiment of the present invention, the laser further includes LD power supply, in which: the LD power supply and first pump
Pu source 11 and second pumping source 12 connection, for providing electricity for first pumping source 11 and second pumping source 12
Source.
Wherein, the LD power supply can be same whole power supply, or two power supplys being independently arranged, respectively the
One pumping source 11 and the second pumping source 10 provide power supply.
In an embodiment of the present invention, the laser further includes adjusting Q module drive system, tune Q module driving system
System is connect with electric-optically Q-switched module 6, adjusts Q driving signal for applying for electric-optically Q-switched module 6.
In an embodiment of the present invention, the laser further includes turn-key system, and the turn-key system and LD power supply adjust Q
Module drive system connection, for synchronizing control to LD power supply and tune Q module drive system.
According to another aspect of the present invention, it is also proposed that a kind of controllable output method of dual-wavelength laser, Fig. 5 is according to the present invention
The compact of one embodiment alternately pumps the flow chart with electric-optically Q-switched twin wavelength laser output method, as shown in figure 5, the method
Including step S501-S503:
In step S501, voltage is applied to first pumping source 11, the pump light of output is situated between from the lath gain
The first side of 2 top of matter is pumped, and laser resonator is in high loss state, when laser gain increases to the first preset gain value
When, it closes the first pumping source and 1/4 first wave length voltage is applied to the electric-optically Q-switched module 6, resonant cavity is in low-loss shape
State exports first wave length Q-switch laser；
Wherein, the first preset gain value can increase for the laser after the first pumping source 11 the first prefixed time interval of work
Benefit value, optionally, the first preset gain value can be first wave length laser gain maximum value, and the first wave length laser gain is most
Big value can be obtained according to historical data；First wave length laser gain maximum value can also be by observing first wave length laser peak
Power obtains, for example yield value when can not be further added by first wave length laser peak power increases as the first wave length laser
Beneficial maximum value.
Wherein, first prefixed time interval can be configured according to the needs of practical application, and the present invention does not make it
It is specific to limit.
In step S502, after preset time period, voltage applied to second pumping source 12, the pump light of output from
Described 2 top second side of lath gain media is pumped, and laser resonator is in high loss state, when laser gain increases to
When the second preset gain value, closes the second pumping source and 1/4 second wave length voltage, resonant cavity are applied to the electric-optically Q-switched module 6
In low-loss state, second wave length Q-switch laser is exported；
Wherein, the preset time period can be configured according to the needs of practical application, and the present invention does not limit it specifically
It is fixed.
Wherein, the second preset gain value can increase for the laser after the second pumping source 12 the second prefixed time interval of work
Benefit value, optionally, the second preset gain value can be second wave length laser gain maximum value, and the second wave length laser gain is most
Big value can be obtained according to historical data；Second wave length laser gain maximum value can also be by observing second wave length laser peak
Power obtains, for example yield value when can not be further added by second wave length laser peak power increases as the second wave length laser
Beneficial maximum value.
Wherein, second prefixed time interval can be configured according to the needs of practical application, and the present invention does not make it
It is specific to limit.
In step S503, be repeated cyclically the first pumping source 11, the second pumping source 12 and electric-optically Q-switched module 6 pressurization and
Pressure condition is moved back, first wave length and the output of second wave length double-pulse laser are obtained.
Particular embodiments described above has carried out further in detail the purpose of the present invention, technical scheme and beneficial effects
It describes in detail bright, it should be understood that the above is only a specific embodiment of the present invention, is not intended to restrict the invention, it is all
Within the spirit and principles in the present invention, any modification, equivalent substitution, improvement and etc. done should be included in guarantor of the invention
Within the scope of shield.
Claims (10)
1. a kind of compact alternately pumps and electric-optically Q-switched twin wavelength laser output laser, which is characterized in that the laser packet
Include: dual wavelength total reflective mirror, lath gain media, prism, aperture, polarizing film, electric-optically Q-switched module, dual wavelength quarter wave plate,
Outgoing mirror, the first pumping source and the second pumping source, in which:
The dual wavelength total reflective mirror, lath gain media, prism, aperture, polarizing film, electric-optically Q-switched module, dual wavelength 1/4
Wave plate and outgoing mirror constitute laser resonator, and successively sequentially arrange along laser light path direction；
The lath gain media, the first pumping source and the second pumping source form laser pumping module, wherein first pump
Pu source is located at the first side of top of lath gain media, and second pumping source is located at top second side of lath gain media,
The pump light that first pumping source and the second pumping source issue is irradiated on the lath gain media, and the lath can be made to increase
Beneficial medium generates population inversion.
2. laser according to claim 1, which is characterized in that the dual wavelength total reflective mirror, which is one, has first wave length
It is one high with first wave length and second wave length that part, which is penetrated with the eyeglass of the high anti-espionage of second wave length or the total reflective mirror,
The eyeglass of anti-espionage.
3. laser according to claim 1, which is characterized in that the prism is 45 degree of parallelogram prisms,
Its effect is to make first wave length and the compact synthesis of second wave length laser optical path.
4. laser according to claim 1, which is characterized in that the polarizing film surface is coated with first wave length and the second wave
Long P light high transmittance film and S light high-reflecting film is placed with optical axis in Brewster's angle or 45 degree of angles.
5. laser according to claim 1, which is characterized in that the laser further includes that lath gain media is heat sink,
The lath gain media is heat sink to be close to the lath gain media, and is located at the lower section of the lath gain media, for controlling
Make the operating temperature of the lath gain media.
6. laser according to claim 1, which is characterized in that the laser further includes that pumping source is heat sink, the pump
Pu source is heat sink to be close to first pumping source and the second pumping source, and is located at the upper of first pumping source and the second pumping source
Side, for controlling the operating temperature of first pumping source and the second pumping source.
7. laser according to claim 1, which is characterized in that the laser further includes LD power supply, in which: the LD
Power supply is connect with first pumping source and second pumping source, for being first pumping source and second pumping source
Power supply is provided.
8. laser according to claim 7, which is characterized in that the laser further includes adjusting Q module drive system, institute
It states and Q module drive system is adjusted to connect with electric-optically Q-switched module, adjust Q driving signal for applying for electric-optically Q-switched module.
9. laser according to claim 8, which is characterized in that the laser further includes turn-key system, the master control
System is connect with LD power supply, tune Q module drive system, for synchronizing control to LD power supply and tune Q module drive system.
10. a kind of compact alternately pumps and electric-optically Q-switched twin wavelength laser output method, it is applied to such as any one of claim 1-9
In the laser, which is characterized in that the described method includes:
Voltage is applied to first pumping source, the pump light of output is pumped from the first side above the lath gain media
Pu, laser resonator is in high loss state, when laser gain increases to the first preset gain value, close the first pumping source and
1/4 first wave length voltage is applied to the electric-optically Q-switched module, resonant cavity is in low-loss state, and output first wave length tune Q swashs
Light；
After preset time period, voltage is applied to second pumping source, the pump light of output is from the lath gain media
Square second side is pumped, and laser resonator is in high loss state, when laser gain increases to the second preset gain value, is closed
It closes the second pumping source and 1/4 second wave length voltage is applied to the electric-optically Q-switched module, resonant cavity is in low-loss state, exports
Second wave length Q-switch laser；
Be repeated cyclically the first pumping source, the second pumping source and electric-optically Q-switched module pressurization and move back pressure condition, obtain first wave length and
The output of second wave length double-pulse laser.
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| CN101257184A (en) * | 2008-03-04 | 2008-09-03 | 天津大学 | Dual wavelength synthetic pumping compact type laser system |
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| CN107332103A (en) * | 2017-06-22 | 2017-11-07 | 四川大学 | A kind of dual wavelength alternating Q-switched laser and its laser output method |
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| CN101257184A (en) * | 2008-03-04 | 2008-09-03 | 天津大学 | Dual wavelength synthetic pumping compact type laser system |
| US20120243563A1 (en) * | 2011-03-22 | 2012-09-27 | United States Of America, As Represented By The Secretary Of The Army | Compact multi-wavelength and multi-beam laser |
| CN104953457A (en) * | 2015-07-03 | 2015-09-30 | 长春理工大学 | Device for alternately outputting dual-wavelength Q-switched pulse lasers |
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Application publication date: 20190823 |