CN105846303A - Mode-locking optical fiber device and mode-locking optical fiber laser device - Google Patents
Mode-locking optical fiber device and mode-locking optical fiber laser device Download PDFInfo
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- CN105846303A CN105846303A CN201610410041.7A CN201610410041A CN105846303A CN 105846303 A CN105846303 A CN 105846303A CN 201610410041 A CN201610410041 A CN 201610410041A CN 105846303 A CN105846303 A CN 105846303A
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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
- H01S3/10—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
- H01S3/1106—Mode locking
- H01S3/1112—Passive mode locking
- H01S3/1115—Passive mode locking using intracavity saturable absorbers
- H01S3/1118—Semiconductor saturable absorbers, e.g. semiconductor saturable absorber mirrors [SESAMs]; Solid-state saturable absorbers, e.g. carbon nanotube [CNT] based
-
- 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
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06754—Fibre amplifiers
-
- 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
- H01S3/106—Controlling the intensity, frequency, phase, polarisation or direction of the emitted radiation, e.g. switching, gating, modulating or demodulating by controlling devices placed within the cavity
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Nanotechnology (AREA)
- Lasers (AREA)
Abstract
The embodiment of the invention provides a mode-locking optical fiber device, applied to a mode-locking optical fiber laser device, and belonging to the field of optical fiber laser devices. The mode-locking optical fiber device comprises a shell, a saturable absorber, a filter and a polarizer, wherein the saturable absorber, filter and polarizer are integrated into the shell, and the shell is provided with a light hole. The mode-locking optical fiber device provided by the embodiment of the invention is conductive to reducing the length of a resonant cavity of the mode-locking optical fiber laser device, thus improving the repetition frequency of mode-locking pulse laser generated by the mode-locking optical fiber laser device, and is also conductive to simplifying the structure of the mode-locking optical fiber laser device. In addition, the embodiment of the invention also provides a mode-locking optical fiber laser device based on the mode-locking optical fiber device.
Description
Technical field
The present invention relates to optical fiber laser field, in particular to a kind of modelocked fiber device
And one mode locked fiber laser.
Background technology
Mode locked fiber laser is the important means producing ultrashort pulse, and traditional modelocked fiber swashs
The generally annular chamber of light device structure or linear cavity, resonator cavity is made up of multiple devices.Such as, ring
Shape chamber mode locked fiber laser generally comprises wavelength division multiplexer, gain fibre, couples follower,
Circulator, wave filter and mode-locking device；The mode locked fiber laser of linear cavity structure generally comprises
Mode-locking device, gain fibre, resonance section and wavelength division multiplexer.Accordingly, because traditional lock
Mould laserresonator comprises multiple discrete optical fibre device so that optical fiber laser is difficult to integrated,
Additionally, the tail optical fiber of each optical fibre device is by increasing the length of mode-locked laser resonator cavity, limit locked mode
The repetition rate of the Mode-locked laser that optical fiber laser produces.
Summary of the invention
It is an object of the invention to provide a kind of modelocked fiber device, to improve the problems referred to above.
Another object of the present invention is to provide a kind of locked mode based on above-mentioned modelocked fiber device
Optical fiber laser.
To achieve these goals, the technical scheme that the embodiment of the present invention uses is as follows:
First aspect, embodiments provides a kind of modelocked fiber device, is applied to locked mode
Optical fiber laser, described mode locked fiber laser includes housing, saturable absorber, wave filter
And the polarizer, described saturable absorber, wave filter and the polarizer be integrated in described housing,
Described housing is provided with light admission port.Described saturable absorber is for entering described saturable absorption
The light beam of body carries out non-linear saturated absorption to form Mode-locked laser.Described wave filter is used for
According to preset wavelength scope, the light beam entering described wave filter is processed.The described polarizer is used
In regulating the polarization direction of described Mode-locked laser to form the locked mode arteries and veins presetting polarization direction
Impulse light.
In conjunction with first aspect, the first possibility that the embodiment of the present invention additionally provides first aspect is real
Executing mode, wherein, described modelocked fiber device also includes the first lens and the second lens, described
First lens and described second lens are all integrated in described housing, described saturable absorber,
Described first lens, described wave filter, the described polarizer and described second lens couple successively,
Described second lens couple with described light admission port.
In conjunction with first aspect the first may embodiment, the embodiment of the present invention additionally provides the
The possible embodiment of the second on the one hand, wherein, described modelocked fiber device also includes coupling
Optical fiber, one end of described coupling optical fiber is through described light admission port and described second Lens Coupling.
In conjunction with first aspect the second may embodiment, the embodiment of the present invention additionally provides the
On the one hand the third possible embodiment, wherein, described coupling optical fiber is polarization maintaining optical fibre.
The first in conjunction with first aspect or first aspect may embodiment or first aspect
The second may embodiment or the third possible embodiment of first aspect, present invention enforcement
Example additionally provides the 4th kind of possible embodiment of first aspect, wherein, described modelocked fiber device
Part also includes heat sink for assist described saturable absorber to dispel the heat, described heat sink with described can
Saturated absorbing body contacts.
In conjunction with the 4th kind of first aspect may embodiment, the embodiment of the present invention additionally provides the
The possible embodiment of the 5th kind on the one hand, wherein, described saturable absorber is that quasiconductor can
Saturated absorption mirror, Graphene saturable absorbing mirror, CNT saturable absorbing mirror or oxidation stone
Any one in ink alkene saturable absorbing mirror.
In conjunction with first aspect, the 6th kind of possibility that the embodiment of the present invention additionally provides first aspect is real
Executing mode, wherein, described modelocked fiber device also includes the first lens and the second lens, described
First lens and described second lens are all integrated in described housing, described saturable absorber,
Described first lens, the described polarizer, described wave filter and described second lens couple successively,
Described second lens couple with described light admission port.
Second aspect, embodiments provides a kind of mode locked fiber laser, including gain
Optical fiber, fiber grating, pump light source, wavelength division multiplexer and above-mentioned modelocked fiber device.
The pump light that described pump light source sends enters described gain fibre, and described gain fibre is described
The lower flashlight produced of the effect of pump light enters described modelocked fiber device through described light admission port；
The flashlight entering described modelocked fiber device through described modelocked fiber device locked mode and is processed as
Described gain fibre is returned after the Mode-locked laser of preset wavelength scope and default polarization direction；
Described Mode-locked laser is amplified into described fiber grating through described gain fibre, and part enters
The described Mode-locked laser being mapped to described fiber grating exports through described fiber grating.
In conjunction with second aspect, the first possibility that the embodiment of the present invention additionally provides second aspect is real
Executing mode, wherein, described wavelength division multiplexer is arranged on described fiber grating and described gain fibre
Between.
In conjunction with second aspect, the embodiment of the present invention additionally provides the second of second aspect may be real
Executing mode, wherein, described fiber grating is arranged on described wavelength division multiplexer and described gain fibre
Between.
Saturable absorber, wave filter and the polarizer are integrated in logical light by the embodiment of the present invention
Constitute modelocked fiber device in the housing of mouth, when being applied to mode locked fiber laser, do not only have
It is beneficial to reduce the length of the resonator cavity of mode locked fiber laser, thus improves mode locked fiber laser
The repetition rate of the Mode-locked laser produced, also helps the structure letter of mode locked fiber laser
Change.Additionally, the modelocked fiber device of the present embodiment offer is integrated with wave filter and the polarizer,
Mode locking pulse polarization state is fixed, to realize the output of linear polarization Mode-locked laser, can be effective
Resist the factor impacts on the performance of modelocked fiber device such as temperature, vibration, stress so that
The mode locked fiber laser applying this modelocked fiber device has reliable non-maintaining function.
It addition, compared to traditional mode locked fiber laser, the embodiment of the present invention provide based on
The mode locked fiber laser of above-mentioned modelocked fiber device, simple in construction, it is easy to integrated, be conducive to
Realize large-scale production.
Other features and advantages of the present invention will illustrate in description subsequently, and, partly
Become apparent from description, or understand by implementing the embodiment of the present invention.This
Bright purpose and other advantages can be by the description write, claims and accompanying drawings
Structure specifically noted by realizes and obtains.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below
The accompanying drawing used required in embodiment will be briefly described, it should be apparent that, retouch below
Accompanying drawing in stating is only some embodiments of the present invention, comes for those of ordinary skill in the art
Say, on the premise of not paying creative work, it is also possible to obtain other according to these accompanying drawings
Accompanying drawing.Shown in accompanying drawing, above and other purpose, feature and the advantage of the present invention will more
Clearly.The part that reference instruction identical in whole accompanying drawings is identical.The most deliberately by real
Border size equal proportion scaling draws accompanying drawing, it is preferred that emphasis is illustrate the purport of the present invention.
Fig. 1 shows the structure of a kind of modelocked fiber device that first embodiment of the invention provides
Schematic diagram；
Fig. 2 shows the knot of a kind of mode locked fiber laser that second embodiment of the invention provides
Structure schematic diagram；
Fig. 3 shows the another kind of mode locked fiber laser that second embodiment of the invention provides
Structural representation.
In figure, reference is respectively as follows:
Modelocked fiber device 100；Housing 110；Light admission port 111；Saturable absorber 120；
First lens 130；Wave filter 140；The polarizer 150；Second lens 160；Heat sink 170；
Coupling optical fiber 180；Mode locked fiber laser 200；Gain fibre 210；Fiber grating 220；
Wavelength division multiplexer 230；Pump light source 240.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below will knot
Close the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear,
Be fully described by, it is clear that described embodiment be a part of embodiment of the present invention rather than
Whole embodiments.Generally herein described in accompanying drawing and the assembly of the embodiment of the present invention that illustrates
Can arrange with various different configurations and design.
Therefore, detailed description not purport to the embodiments of the invention provided in the accompanying drawings below
Limit the scope of claimed invention, but be merely representative of the selected enforcement of the present invention
Example.Based on the embodiment in the present invention, those of ordinary skill in the art are not making creativeness
The every other embodiment obtained under work premise, broadly falls into the scope of protection of the invention.
It should also be noted that similar label and letter expression similar terms in following accompanying drawing, therefore,
The most a certain Xiang Yi accompanying drawing is defined, then need not it is carried out in accompanying drawing subsequently
Definition and explanation further.
In describing the invention, it should be noted that term " on ", D score, " interior ",
Orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship,
Or this invention product orientation usually put or position relationship when using, it is for only for ease of
Describe the present invention and simplification description rather than instruction or the device of hint indication or element must have
There is specific orientation, with specific azimuth configuration and operation, therefore it is not intended that to the present invention
Restriction.Describe additionally, term " first ", " second ", " the 3rd " etc. are only used for distinguishing,
And it is not intended that indicate or hint relative importance.
In describing the invention, in addition it is also necessary to explanation, unless otherwise clear and definite regulation and limit
Fixed, term " is arranged ", " coupling ", " connection " should be interpreted broadly, and such as, " coupling " is permissible
It it is fixing connection, it is also possible to be to removably connect, or be integrally connected；Can be to be mechanically connected,
It can also be electrical connection；Can be to be joined directly together, it is also possible to be indirectly connected to by intermediary,
It can be the connection of two element internals.For the ordinary skill in the art, permissible
Concrete condition understands above-mentioned term concrete meaning in the present invention.
First embodiment
Owing to traditional mode-locked laser resonator cavity comprises multiple discrete optical fibre device so that optical fiber
Laser instrument is difficult to integrated, additionally, the tail optical fiber of each optical fibre device will increase mode-locked laser resonator cavity
Length, limits the repetition rate of the Mode-locked laser that mode locked fiber laser produces.In view of
This, embodiments provide a kind of modelocked fiber device, be applied to mode locked fiber laser
In, not only contribute to reduce the length of the resonator cavity of mode locked fiber laser, thus improve locked mode
The repetition rate of the Mode-locked laser that optical fiber laser produces, also helps mode-locked fiber lasers
The structure of device simplifies.
As it is shown in figure 1, the modelocked fiber device 100 that the embodiment of the present invention provides includes housing
110, saturable absorber 120, wave filter 140 and the polarizer 150.Saturable absorber
120, wave filter 140 and the polarizer 150 are integrated in housing 110, and housing 110 is provided with logical
Light mouth 111.
Wherein, saturable absorber 120 is for the light entering described saturable absorber 120
The non-linear saturated absorption of Shu Jinhang is to form Mode-locked laser.In the present embodiment, described satisfy
Can be semiconductor saturable absorbing mirror, Graphene saturable absorbing mirror, carbon with absorber 120
Nanotube saturable absorbing mirror or graphene oxide saturable absorbing mirror are medium.
Described modelocked fiber device 100 also includes heat sink 170.Heat sink 170 and saturable absorption
Body 120 contacts, and is used for assisting saturable absorber 120 to dispel the heat, by saturable absorber 120
The heat guide housings 110 that non-linear saturated absorption produces is outside, thus improves saturable absorption
The service behaviour of body 120.In the present embodiment, heat sink 170 can be cooling base, it is also possible to
It is multiple miniature fin.
Wave filter 140 is for according to the preset wavelength scope light beam to entering described wave filter 140
Process.In the present embodiment, wave filter 140 is preferably bandpass filter.Bandpass filter
For remnant pump laser is filtered, and by laser to be produced.
The polarizer 150 is preset to be formed for the polarization direction regulating described Mode-locked laser
The Mode-locked laser of polarization direction.In modelocked fiber device 100, preset the line of polarization direction
Polarized light can pass through the polarizer 150, and the light beam of other polarization state is cut off.Wherein, preset
Polarization direction is the direction that thoroughly shakes of the polarizer 150.Such as, the polarizer 150 can be polarization
Sheet or Nicol prism etc..
Light admission port 111 entering light and going out light for modelocked fiber device 100.Such as, light admission port
111 can be the through hole of the default bore arranged on housing 110, it is also possible to be a use
In the port inserting optical fiber.In the present embodiment, it is preferred that described modelocked fiber device 100
Also including mating optical fiber 180, one end of described coupling optical fiber 180 couples with light admission port 111.
Now, the light beam of described modelocked fiber device 100 is entered and by described modelocked fiber device
The light beam of 100 outgoing all transmits through overmatching optical fiber 180.Arranging of coupling optical fiber 180 is favourable
Couple with external fiber device such as gain fibre etc. in described modelocked fiber device 100.Need
Illustrate, in order to keep the polarization direction of the light beam by modelocked fiber device 100 outgoing not
Becoming, described coupling optical fiber 180 is preferably polarization maintaining optical fibre.
Further, the modelocked fiber device 100 that the embodiment of the present invention provides also includes that first is saturating
Mirror 130 and the second lens 160, and the first lens 130 and the second lens 160 are all integrated in shell
In body 110.As it is shown in figure 1, in the present embodiment, saturable absorber the 120, first lens
130, wave filter 140, the described polarizer 150 and the second lens 160 couple successively, and the
Two lens 160 couple with light admission port 111.Wherein, the first lens 130 and the second lens 160
It is collimating lens.Such as, the first lens 130 and the second lens 160 can be convex lens,
Can also be for have alignment function and the battery of lens etc. of achromatism function.
Certainly, in addition to above-mentioned position relationship, saturable absorber the 120, first lens 130,
The position relationship of wave filter 140, the polarizer 150 and the second lens 160 can also be: can satisfy
With absorber the 120, first lens 130, the polarizer 150, wave filter 140 and the second lens
160 couple successively.
The modelocked fiber device 100 that the present embodiment provides can apply to mode locked fiber laser.
Certainly, in addition to including above-mentioned modelocked fiber device 100, described mode locked fiber laser also may be used
To include gain fibre, fiber grating, pump light source and wavelength division multiplexer etc..Wherein, locked mode
Optical fibre device 100, gain fibre and fiber grating constitute mode-locked laser resonator cavity.Concrete,
Mode locked fiber laser worked based on the modelocked fiber device 100 that the present embodiment provides
Journey can be:
The pump light that pump light source sends enters described mode-locked laser resonator cavity through wavelength division multiplexer
In gain fibre so that gain fibre generates flashlight, it should be noted that described signal
Light refers to gain fibre under the excitation of pump light, and what stimulated radiation produced is used for exporting locked mode
The light beam of pulse laser.The coupled optical fiber of flashlight that gain fibre generates enters described locked mode light
Fiber device 100.In modelocked fiber device 100, described flashlight is accurate through the second lens 160
The polarizer 150 is incided after Zhi.Incident flashlight is processed as presetting polarization by the polarizer 150
The flashlight of described default polarization direction is also incided wave filter 140 by the flashlight in direction.Filter
The centre wavelength of ripple device 140 needs the ripple of the pulse laser of output with this mode locked fiber laser
Long consistent.Wave filter 140 passes through the flashlight of preset wavelength scope and filters the pumping of remnants
Light.Through the preset wavelength scope of wave filter 140 and the flashlight of default polarization direction through first
Lens 130 converge to saturable absorber 120, and saturable absorber 120 is to described default ripple
The flashlight of long scope and default polarization direction carries out non-linear saturated absorption to realize flashlight
Longitudinal mode PGC demodulation.
Flashlight after described saturable absorber 120 locked mode is reflected back the first lens
130, after the first lens 130 collimation, incide wave filter 140 and the polarizer the most successively
150.Again pass by the flashlight after Filtering Processing and polarization beat length through the second lens 160
It coupled to mate optical fiber 180, and transmitted to gain fibre, through gain by coupling optical fiber 180
Input to fiber grating after fiber amplifier.Wherein, the part letter of fiber grating Transmission Conditions is met
The output of number light, and the part signal light being unsatisfactory for Transmission Conditions is reflected back toward mode-locked laser resonator cavity
Relaying persistent oscillation.Described Transmission Conditions is the transmitance of fiber grating pair flashlight, such as, light
Fine grating is 10% to the transmitance of flashlight, then in the flashlight after gain fibre amplifies
The light energy output of 10%, the light energy of 90% is reflected back toward in mode-locked laser resonator cavity and continues to shake
Swing.Said process is the process that flashlight completes once to vibrate in mode-locked laser resonator cavity, warp
After crossing multiple oscillation, the most exportable stable list polarization Mode-locked laser.
In sum, the embodiment of the present invention by saturable absorber 120, wave filter 140 and rises
Device 150 partially is integrated in the housing 110 with light admission port 111 and constitutes modelocked fiber device 100.
When the modelocked fiber device 100 provided by the present embodiment is applied to mode locked fiber laser, by
Modelocked fiber device 100, gain fibre and fiber grating constitute mode-locked laser resonator cavity, are beneficial to
The structure of mode locked fiber laser simplifies.Saturable absorber 120, wave filter 140 and be polarized
Coupling between device 150, without coupling optical fiber 180, is conducive to reducing mode locked fiber laser
The length of mode-locked laser resonator cavity, improve the Mode-locked laser that mode locked fiber laser produces
Repetition rate.Additionally, the modelocked fiber device 100 of the present embodiment offer is integrated with filtering
Device 140 and the polarizer 150, fix mode locking pulse polarization state, to realize linear polarization locked mode arteries and veins
Impulse light exports, and the factors such as temperature, vibration, stress of can effectively resisting are to modelocked fiber device
The impact of the performance of part 100 so that apply the mode-locked fiber lasers of this modelocked fiber device 100
Utensil has reliable non-maintaining function.
Second embodiment
As in figure 2 it is shown, embodiments provide a kind of mode locked fiber laser 200, bag
Include gain fibre 210, fiber grating 220, pump light source 240, wavelength division multiplexer 230 with
And the modelocked fiber device 100 that above-mentioned first embodiment provides.Now, mode locked fiber laser
The mode-locked laser resonator cavity of 200 includes modelocked fiber device 100, gain fibre 210 and light
Fine grating 220.Wavelength division multiplexer 230 is arranged on outside described mould laserresonator, i.e. optical fiber light
Grid 220 are arranged between wavelength division multiplexer 230 and gain fibre 210.
Wherein, pump light source 240 can use laser instrument or laser diode.Gain fibre
210 can be the optical fiber doped with rare earth ion, can be such as Yb dosed optical fiber, Er-doped fiber,
Thulium doped fiber etc..Population inversion is there is in these gain fibres 210 under the excitation of pump light,
And then spontaneous radiation produces flashlight, such as when gain fibre 210 uses Er-doped fiber, logical
The pump light crossing 975nm can realize the ultrashort laser pulse output of 1560nm wave band.
Fiber grating 220, i.e. Fiber Bragg Grating FBG, it is allowed to pump light passes freely through, to lock
The laser that mould laserresonator produces has filtering frequency-selecting effect, on the one hand by part mode-locked laser
The pulse laser that resonator cavity produces is reflected back mode-locked laser resonator cavity relaying persistent oscillation, on the other hand
The pulse laser output that part mode-locked laser resonator cavity is produced.
Inclined in order to be further ensured that mode locked fiber laser 200 output lead that the present embodiment provides
Shake Mode-locked laser, and fiber grating 220, gain fibre 210 are with modelocked fiber device 100
Between pass sequentially through polarization maintaining optical fibre coupling.Additionally, gain fibre 210 and fiber grating 220
Polarization maintaining optical fibre is all used to make.It should be noted that the fibre-optical dispersion value of optical fiber also contributes to lock
Mode fiber laser instrument 200 exports the pulse width of pulse laser, therefore, uses to have and does not share the same light
The optical fiber of fine dispersion values is so that this mode locked fiber laser 200 exports different pulse width
Pulse laser.
It is humorous that the pump light that pump light source 240 sends enters described mould laser through wavelength division multiplexer 230
Shake the gain fibre 210 in chamber.Gain fibre 210 produces under the effect of described pump light
Flashlight enters described modelocked fiber device 100 through described light admission port 111.Enter described locked mode
The flashlight of optical fibre device 100 is through the Filtering Processing of described modelocked fiber device 100, polarization state
Described gain fibre 210 is returned through described light admission port 111, through described after controlling to process with locked mode
Gain fibre 210 is amplified into described fiber grating 220.Wherein, fiber grating 220 is met
The part signal light output of Transmission Conditions, and the part signal light being unsatisfactory for Transmission Conditions is reflected
Return mode-locked laser resonator cavity relaying persistent oscillation.Wherein, described Transmission Conditions is fiber grating 220
Transmitance to flashlight.Said process is that the flashlight produced in gain fibre 210 is at locked mode
Laser resonance intracavity completes the process once vibrated, after multiple oscillation, the most exportable stable
List polarization Mode-locked laser.
In addition, it is necessary to explanation, the knot of the mode locked fiber laser 200 that the present embodiment provides
Structure can also be: mode locked fiber laser 200 include gain fibre 210, fiber grating 220,
The modelocked fiber that pump light source 240, wavelength division multiplexer 230 and above-mentioned first embodiment provide
Device 100.The mode-locked laser resonator cavity of mode locked fiber laser 200 includes mode-locked fiber lasers
Device 200, gain fibre 210 and fiber grating 220.Wavelength division multiplexer 230 is arranged on institute
State mould laser resonance intracavity, fiber grating 220 and gain will be arranged on by wavelength division multiplexer 230
Between optical fiber 210, as shown in Figure 3.
In sum, a kind of lock based on modelocked fiber device 100 is embodiments provided
Mode fiber laser instrument 200.Compared to traditional mode locked fiber laser, the embodiment of the present invention carries
The length of the mode-locked laser resonator cavity of the mode locked fiber laser 200 of confession is shorter, the locked mode of generation
The repetition rate of pulse laser is higher, and simple in construction, it is easy to integrated, is advantageously implemented big rule
Mould produces.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention,
For a person skilled in the art, the present invention can have various modifications and variations.All at this
Within the spirit of invention and principle, any modification, equivalent substitution and improvement etc. made, all should
Within being included in protection scope of the present invention.
Claims (10)
1. a modelocked fiber device, is applied to mode locked fiber laser, it is characterised in that institute
State modelocked fiber device and include housing, saturable absorber, wave filter and the polarizer, described can
Saturated absorbing body, described wave filter and the described polarizer are integrated in described housing, described housing
It is provided with light admission port；
Described saturable absorber is for carrying out non-to the light beam entering described saturable absorber
Linear saturated absorption is to form Mode-locked laser；
Described wave filter is for entering the light beam entering described wave filter according to preset wavelength scope
Row processes；
The described polarizer is preset to be formed for the polarization direction regulating described Mode-locked laser
The Mode-locked laser of polarization direction.
Modelocked fiber device the most according to claim 1, it is characterised in that described locked mode
Optical fibre device also includes the first lens and the second lens, described first lens and described second lens
All it is integrated in described housing, described saturable absorber, described first lens, described filtering
Device, the described polarizer and described second lens couple successively, described second lens and described logical light
Mouth coupling.
Modelocked fiber device the most according to claim 2, it is characterised in that described locked mode
Optical fibre device also includes mating optical fiber, and one end second lens of described coupling optical fiber are through described logical light
Mouth and described second Lens Coupling.
Modelocked fiber device the most according to claim 3, it is characterised in that described coupling
Optical fiber is polarization maintaining optical fibre.
5. according to the modelocked fiber device according to any one of claim 1-4, it is characterised in that
Described modelocked fiber device also includes heat sink for assist described saturable absorber to dispel the heat, institute
State heat sink and described saturable absorber to contact.
Modelocked fiber device the most according to claim 5, it is characterised in that described satisfy
With absorber be semiconductor saturable absorbing mirror, Graphene saturable absorbing mirror, CNT can
Any one in saturated absorption mirror or graphene oxide saturable absorbing mirror.
Modelocked fiber device the most according to claim 1, it is characterised in that described locked mode
Optical fibre device also includes the first lens and the second lens, described first lens and described second lens
All be integrated in described housing, described saturable absorber, described first lens, described in be polarized
Device, described wave filter and described second lens couple successively, described second lens and described logical light
Mouth coupling.
8. a mode locked fiber laser, it is characterised in that include gain fibre, fiber grating,
Pump light source, wavelength division multiplexer and the modelocked fiber device according to any one of claim 1-7
Part, the pump light that described pump light source sends enters described gain fibre, and described gain fibre exists
The lower flashlight produced of the effect of described pump light enters described modelocked fiber through described light admission port
Device, the flashlight entering described modelocked fiber device through described modelocked fiber device locked mode and is located
Reason returns described gain after the Mode-locked laser for preset wavelength scope and default polarization direction
Optical fiber, described Mode-locked laser is amplified into described fiber grating through described gain fibre,
Portions incident is defeated through described fiber grating to the described Mode-locked laser of described fiber grating
Go out.
Mode locked fiber laser the most according to claim 8, it is characterised in that described ripple
Division multiplexer is arranged between described fiber grating and described gain fibre.
Mode locked fiber laser the most according to claim 8, it is characterised in that described
Fiber grating is arranged between described wavelength division multiplexer and described gain fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610410041.7A CN105846303A (en) | 2016-06-08 | 2016-06-08 | Mode-locking optical fiber device and mode-locking optical fiber laser device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610410041.7A CN105846303A (en) | 2016-06-08 | 2016-06-08 | Mode-locking optical fiber device and mode-locking optical fiber laser device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105846303A true CN105846303A (en) | 2016-08-10 |
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| CN201610410041.7A Pending CN105846303A (en) | 2016-06-08 | 2016-06-08 | Mode-locking optical fiber device and mode-locking optical fiber laser device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106129798A (en) * | 2016-08-26 | 2016-11-16 | 中国工程物理研究院激光聚变研究中心 | Mode locked fiber laser |
| CN111916988A (en) * | 2020-06-11 | 2020-11-10 | 杭州奥创光子技术有限公司 | Adjusting device and adjusting method for mode-locked laser absorber |
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| CN111916988B (en) * | 2020-06-11 | 2022-04-29 | 杭州奥创光子技术有限公司 | Adjusting device and adjusting method for mode-locked laser absorber |
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Application publication date: 20160810 |