CN109638627A - A kind of picosecond seed source laser - Google Patents
A kind of picosecond seed source laser Download PDFInfo
- Publication number
- CN109638627A CN109638627A CN201910097486.8A CN201910097486A CN109638627A CN 109638627 A CN109638627 A CN 109638627A CN 201910097486 A CN201910097486 A CN 201910097486A CN 109638627 A CN109638627 A CN 109638627A
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- China
- Prior art keywords
- saturable absorber
- picosecond
- seed source
- laser
- output
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- 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.)
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Classifications
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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
-
- 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
- H01S3/0675—Resonators including a grating structure, e.g. distributed Bragg reflectors [DBR] or distributed feedback [DFB] fibre lasers
-
- 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
- H01S3/08—Construction or shape of optical resonators or components thereof
- H01S3/08004—Construction or shape of optical resonators or components thereof incorporating a dispersive element, e.g. a prism for wavelength selection
Abstract
The embodiment of the invention provides a kind of picosecond seed source lasers, comprising: sequentially connected saturable absorber integrated morphology, wavelength division multiplexer, gain fibre, beam splitter and high reflective grid；One end of gain fibre and the signal output leg of wavelength division multiplexer connect, and the input terminal of the other end and beam splitter connects；The central point of the output port of saturable absorber integrated morphology and high reflective grid point-blank, to constitute linear resonance cavity configuration；Wavelength division multiplexer imports pump light in linear resonant cavity structure, to generate picosecond pulse laser as gain driver in linear cavity resonator structure；Beam splitter is exported picosecond pulse laser by preset ratio.The embodiment of the present invention forms resonant cavity by saturable absorber integrated morphology and high reflective grid, so that the pump light excitation gain medium in introduction chamber forms stimulated radiation, and passive mode-locking is carried out using saturable absorber integrated morphology, laser structure is simplified, the stability in pulse seed source is improved.
Description
Technical field
The present embodiments relate to laser technology fields, more particularly to a kind of picosecond seed source laser.
Background technique
Optical fiber laser is with stability is good, at low cost, easy to operate, simple and compact for structure, coupling efficiency is high, thermal diffusivity
Good, high conversion efficiency, threshold value be low, good beam quality and the advantages that narrow linewidth.Since these advantage optical fiber lasers appear in respectively
In application field, such as microfabrication, laser marking, Military Application, medical treatment field.And it is obtained using rare earth doped fiber mode locking
Ultrashort pulse laser, it is fast in fiber optic communication, ultrafast laser, Fibre Optical Sensor, optical information processing, laser guidance, inertial confinement
Igniting, total colouring and laser printing have important application.
In the prior art, common mode-locking technique includes: active mode locking, passive mode-locking and self-locking mode in laser.Wherein,
Passive mode-locking is common mode-locking technique.Passive mode-locking includes nonlinear polarization evolution mode locking (NPE) and saturable absorber lock
Mould, the picosecond pulse laser that both modes are realized have industrialization.But NPE structure includes space structure, and structure is complicated, surely
Qualitative difference.
Therefore, one kind picosecond seed source laser is needed now to solve the above problems.
Summary of the invention
To solve the above-mentioned problems, the embodiment of the present invention provides one kind and overcomes the above problem or at least be partially solved
State a kind of picosecond seed source laser of problem.
The first aspect embodiment of the present invention provides a kind of picosecond seed source laser, comprising:
Sequentially connected saturable absorber integrated morphology, wavelength division multiplexer, gain fibre, beam splitter and high reflective grid；
One end of the gain fibre is connect with the signal output leg of the wavelength division multiplexer, the other end and the beam splitter
Input terminal connection；
The central point of the output port of the saturable absorber integrated morphology and the reflective grid of height point-blank,
To constitute linear resonance cavity configuration；
The wavelength division multiplexer imports pump light in the linear resonance cavity configuration, in the linear resonance cavity configuration
It is middle that gain driver is used as to generate picosecond pulse laser；
The beam splitter is exported the picosecond pulse laser by preset ratio.
One kind picosecond seed source laser provided in an embodiment of the present invention, it is anti-by saturable absorber integrated morphology and height
Grating forms resonant cavity, so that the pump light excitation gain medium in introduction chamber forms stimulated radiation, and utilizes saturable absorption
Body integrated morphology carries out passive mode-locking, simplifies laser structure, improves the stability in pulse seed source.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of picosecond seed source laser structural schematic diagram provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical solution in the embodiment of the present invention is explicitly described, it is clear that described embodiment is the present invention
A part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
Fig. 1 is a kind of picosecond seed source laser structural schematic diagram provided in an embodiment of the present invention, as shown in Figure 1, comprising:
Sequentially connected saturable absorber integrated morphology 1, wavelength division multiplexer 2, gain fibre 6, beam splitter 3 and Gao Fanguang
Grid 4；
One end of the gain fibre 6 is connect with the signal output leg of the wavelength division multiplexer 2, the other end and the beam splitting
The input terminal of device 3 connects；
The central point of the output port of the saturable absorber integrated morphology 1 and the reflective grid 4 of the height is in straight line
On, to constitute linear resonance cavity configuration；
The wavelength division multiplexer 2 imports pump light in the linear resonance cavity configuration, in the linear resonant cavity knot
Picosecond pulse laser is generated as gain driver in structure；
The beam splitter 3 is exported the picosecond pulse laser by preset ratio.
It should be noted that existing seed source laser structure due to use spatial compounding structure, thus by it is extraneous because
Element is affected, so that stability is poor, maintenance cost is higher.The embodiment of the present invention on this basis, provides a kind of picosecond
Seed source laser, structure is simple, stability is high.
Specifically, in provided in an embodiment of the present invention picosecond of seed source laser, saturable absorber integrated morphology 1 and height
Reflective 4 face of grid is placed, and the output port of saturable absorber integrated morphology 1 and the center of high reflective grid 4 are in a straight line
On, so that one linear resonance cavity configuration of saturable absorber integrated morphology 1 and the high reflective composition of grid 4 is used, so that importing
The pump light of inlet wire cavity resonator structure can carry out laser generation back and forth in linear cavity resonator structure, form picosecond pulse and swash
Light.It is understood that saturable absorber integrated morphology 1 is set in laser and is able to carry out passive mode-locking, then formed
Linear resonance cavity configuration enable to be formed by the pump light excitation gain medium in 2 introduction chamber of wavelength division multiplexer and be excited spoke
Penetrate, to generate picosecond pulse laser in linear cavity resonator structure, finally by beam splitter 3 according to certain beam splitting ratio by skin
Pulse per second (PPS) laser is exported by preset ratio.It is understood that the laser projection generated in linear resonance cavity configuration is to saturable
When absorbing in integrated morphology, according to the characteristic of saturable absorption integrated morphology, intense part absorptivity is small, the light reflected back
By force, light weak part absorptivity is big, and the light reflected back is weak, i.e. pulse laser two sides constantly narrow, to obtain pulse laser.
It needs to form amplification laser by gain media in the embodiment of the present invention, in embodiments of the present invention, preferably
Gain is carried out using the form of gain fibre 6, as shown in Figure 1, the signal of the input terminal of gain fibre 6 and wavelength division multiplexer 2
Output leg connection, the output end of gain fibre 6 is connect with the input terminal of beam splitter 3, thus by the pumping light stimulus in introduction chamber
Gain media forms population inversion to amplify laser.
Preferably, the picosecond pulse laser pulse width that the embodiment of the present invention generates is less than 10 picoseconds.
One kind picosecond seed source laser provided in an embodiment of the present invention, it is anti-by saturable absorber integrated morphology and height
Grating forms resonant cavity, so that the pump light excitation gain medium in introduction chamber forms stimulated radiation, and utilizes saturable absorption
Body integrated morphology carries out passive mode-locking, simplifies laser structure, improves the stability in pulse seed source.
On the basis of the above embodiments, the saturable absorber integrated morphology includes:
Saturable absorber, flange and more wire jumpers；
The first end of the wire jumper connects the output port of the saturable absorber integrated morphology；
The saturable absorber sticks in the end face of the first end of wire jumper, and passes through the flange and wherein a wire jumper
It is fixed, so that the light of wire jumper output vertically injects the end face center of the saturable absorber.
By the content of above-described embodiment it is found that the embodiment of the invention provides a saturable absorber integrated morphology come into
Row passive mode-locking, specifically, saturable absorber integrated mechanism provided in an embodiment of the present invention includes saturable absorber, flange
And more wire jumpers, saturable absorber stick in the end face of wire jumper first end ceramics, then pass through flange and another wire jumper
Saturable absorber is fixed and encapsulated, and is made in practical optical path, the light of wire jumper output must vertically get to SESAM saturable
The end face center of absorber.
Further, the output port of the first end connection saturable absorber integrated morphology of wire jumper, so that wire jumper is defeated
Light out is transferred to outside saturable absorber integrated morphology by output port.
It is understood that saturable absorber is sticked in wire jumper port by the embodiment of the present invention, spatial light can be avoided
The design on road, stability is higher, also more easy to maintain, and maintenance cost is low.Also, the saturable absorber used sticks in jump
The structure of line end mouth can be further simplified laser structure convenient for all -fiber welding in pulse seed source.
On the basis of the above embodiments, the output port of the saturable absorber integrated morphology by tail optical fiber with it is described
The signal input leg connection of wavelength division multiplexer.
As shown in Figure 1, saturable absorber integrated morphology 1, wavelength division multiplexer 2, beam splitter 3 and high reflective grid 4 successively connect
It connects and constitutes picosecond seed source laser, by the tail optical fiber of the output port setting in saturable absorber integrated morphology, can satisfy
It is attached with absorber integrated morphology 1 and the signal input leg of wavelength division multiplexer 2, forms complete optical path.
On the basis of the above embodiments, the saturable absorber includes:
SESAM saturable absorber, graphene saturable absorber or black phosphorus saturable absorber.
By the content of above-described embodiment it is found that the embodiment of the present invention has used saturable absorber to carry out passive mode locking.
Specifically, the embodiment of the present invention can be inhaled using SESAM saturable absorber, graphene saturable absorber or black phosphorus saturable
Three kinds of materials of acceptor, can be selected accordingly according to the actual situation.It should be noted that due to SESAM saturable absorption
Body has developed into ripe and industrialization at present, therefore SESAM saturable absorber is mostly used in actual production.
On the basis of the above embodiments, described picosecond of seed source laser further include:
Pumping source 5, the tail optical fiber of the pumping source 5 are connect with the pumping leg of the wavelength division multiplexer 2.
By the content of above-described embodiment it is found that wavelength division multiplexer provided in an embodiment of the present invention 2 needs to import pump light
Linear resonance cavity configuration, then preferably, the embodiment of the present invention provides pump light using pumping source 5, as shown in Figure 1, pumping
The tail optical fiber in source 5 is connect with the pumping leg of wavelength division multiplexer 2.
Preferably, semiconductor pump laser can be used in pumping source 5.The pump light that pumping source 5 emits passes through wavelength-division multiplex
It is intracavitary that device 2 enters linear resonance.Pump light excitation gain medium into resonance forms stimulated radiation.The laser of intracavitary generation
When projecting on saturable absorber, according to the characteristic of saturable absorber, intense part absorptivity is small, the light reflected back
By force, light weak part absorptivity is big, and the light reflected back is weak, i.e. pulse laser two sides constantly narrow, to obtain pulse laser.
On the basis of the above embodiments, described picosecond of seed source laser further include:
Outlet terminal, the outlet terminal are connect with the first output leg of the beam splitter.
By the content of above-described embodiment it is found that provided in an embodiment of the present invention picosecond of seed source laser can be by default ratio
Example export picosecond pulse laser, derived picosecond pulse laser needs are exported by certain mode, the embodiment of the present invention
It is preferably disposed with outlet terminal 7 and carries out laser output, as shown in Figure 1, the first output of outlet terminal 7 and the beam splitter 3
Leg connection, so that fraction of laser light derived from beam splitter 3 be exported.
On the basis of the above embodiments, the output form of the outlet terminal includes:
Naked fibre output, wire jumper output and collimation output.
Preferably, the embodiment of the invention provides a variety of output forms, including naked fibre output, wire jumper to export and collimate defeated
Out, naked fibre output refers to that direct optical fiber output, output form are divergent shape, and wire jumper output refers to will be swashed in the form of optical patchcord
Light output, collimation output refer to the laser form by collimation output device output collimation.
On the basis of the above embodiments, the second output leg of the beam splitter is connect with the tail optical fiber of the reflective grid of height.
As shown in Figure 1, saturable absorber integrated morphology 1, wavelength division multiplexer 2, beam splitter 3 and high reflective grid 4 successively connect
It connects and constitutes picosecond seed source laser, when the first output leg of beam splitter 3 connects outlet terminal 7, the second output of beam splitter 3
Leg is connect with the tail optical fiber of the reflective grid 4 of the height.
On the basis of the above embodiments, the splitting ratio of the beam splitter is 3:7.
Preferably, the splitting ratio of beam splitter provided in an embodiment of the present invention be 3:7, by the output port of beam splitter 30% with
Outlet terminal connection, 70% output port are connect with high reflective grid, to form picosecond second punching output of firm power.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (9)
1. a kind of picosecond seed source laser characterized by comprising
Sequentially connected saturable absorber integrated morphology, wavelength division multiplexer, gain fibre, beam splitter and high reflective grid；
One end of the gain fibre is connect with the signal output leg of the wavelength division multiplexer, and the other end is defeated with the beam splitter
Enter end connection；
The central point of the output port of the saturable absorber integrated morphology and the reflective grid of height point-blank, with structure
Linear cavity resonator structure；
The wavelength division multiplexer imports pump light in the linear resonance cavity configuration, to make in the linear resonance cavity configuration
Picosecond pulse laser is generated for gain driver；
The beam splitter is exported the picosecond pulse laser by preset ratio.
2. according to claim 1 picosecond of seed source laser, which is characterized in that the saturable absorber integrated morphology
Include:
Saturable absorber, flange and more wire jumpers；
The first end of the wire jumper connects the output port of the saturable absorber integrated morphology；The saturable absorber is glutinous
It is affixed on the end face of the first end of wire jumper, and by the flange and wherein a wire jumper is fixed, so that the light of wire jumper output
Vertically inject the end face center of the saturable absorber.
3. according to claim 2 picosecond of seed source laser, which is characterized in that the saturable absorber integrated morphology
Output port connect by the signal input leg of tail optical fiber and the wavelength division multiplexer.
4. according to claim 2 picosecond of seed source laser, which is characterized in that the saturable absorber includes:
SESAM saturable absorber, graphene saturable absorber or black phosphorus saturable absorber.
5. according to claim 1 picosecond of seed source laser, which is characterized in that described picosecond of seed source laser is also wrapped
It includes:
Pumping source, the tail optical fiber of the pumping source are connect with the pumping leg of the wavelength division multiplexer.
6. according to claim 1 picosecond of seed source laser, which is characterized in that described picosecond of seed source laser is also wrapped
It includes:
Outlet terminal, the outlet terminal are connect with the first output leg of the beam splitter.
7. according to claim 6 picosecond of seed source laser, which is characterized in that the output form packet of the outlet terminal
It includes:
Naked fibre output, wire jumper output and collimation output.
8. according to claim 6 picosecond of seed source laser, which is characterized in that the second output leg of the beam splitter with
The tail optical fiber of the reflective grid of height connects.
9. according to claim 8 picosecond of seed source laser, which is characterized in that the splitting ratio of the beam splitter is 3:7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910097486.8A CN109638627A (en) | 2019-01-31 | 2019-01-31 | A kind of picosecond seed source laser |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910097486.8A CN109638627A (en) | 2019-01-31 | 2019-01-31 | A kind of picosecond seed source laser |
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| CN109638627A true CN109638627A (en) | 2019-04-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220131329A1 (en) * | 2019-01-31 | 2022-04-28 | South China University Of Technology | Multi-wavelength and single-frequency q-switching optical fiber laser device |
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|---|---|---|---|---|
| CN102368585A (en) * | 2011-09-16 | 2012-03-07 | 北京工业大学 | High-repetition-frequency passive-mode-locking ultrashort-pulse all-fiber laser |
| US20120281720A1 (en) * | 2011-05-06 | 2012-11-08 | Imra America, Inc. | Broadband generation of coherent continua with optical fibers |
| CN108011288A (en) * | 2017-12-15 | 2018-05-08 | 西北大学 | Dispersion management type femtosecond mode locking pulse optical fiber laser based on single-walled carbon nanotube |
| CN109149328A (en) * | 2018-08-23 | 2019-01-04 | 中国科学院合肥物质科学研究院 | A kind of low-repetition-frequency linear cavity picosecond ytterbium-doping optical fiber laser of ambient stable |
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2019
- 2019-01-31 CN CN201910097486.8A patent/CN109638627A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120281720A1 (en) * | 2011-05-06 | 2012-11-08 | Imra America, Inc. | Broadband generation of coherent continua with optical fibers |
| CN102368585A (en) * | 2011-09-16 | 2012-03-07 | 北京工业大学 | High-repetition-frequency passive-mode-locking ultrashort-pulse all-fiber laser |
| CN108011288A (en) * | 2017-12-15 | 2018-05-08 | 西北大学 | Dispersion management type femtosecond mode locking pulse optical fiber laser based on single-walled carbon nanotube |
| CN109149328A (en) * | 2018-08-23 | 2019-01-04 | 中国科学院合肥物质科学研究院 | A kind of low-repetition-frequency linear cavity picosecond ytterbium-doping optical fiber laser of ambient stable |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20220131329A1 (en) * | 2019-01-31 | 2022-04-28 | South China University Of Technology | Multi-wavelength and single-frequency q-switching optical fiber laser device |
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