CN102856781A - Seed injecting Q-switching single-frequency fiber laser - Google Patents
Seed injecting Q-switching single-frequency fiber laser Download PDFInfo
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- CN102856781A CN102856781A CN2012103291870A CN201210329187A CN102856781A CN 102856781 A CN102856781 A CN 102856781A CN 2012103291870 A CN2012103291870 A CN 2012103291870A CN 201210329187 A CN201210329187 A CN 201210329187A CN 102856781 A CN102856781 A CN 102856781A
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Abstract
The invention relates to a fiber laser, particularly a seed injecting Q-switching single-frequency fiber laser acquiring single-frequency laser output. The laser is characterized in that the output tail of a single-frequency seed laser is connected with the input port of a fiber coupler; the fiber output port of the fiber coupler and a pumping semiconductor laser are connected with the signal input port of a fiber beam combiner; the output port of the fiber beam combiner is connected with the input terminal of a fiber isolator through gain fibers; the output terminal of the fibers isolator is connected with a Q-switching switch; the other terminal of the Q-switching switch is connected with a fiber band-pass filter; the other terminal of the band-pass filter is connected with the input terminal of the fiber coupler; and the output terminal of the fiber coupler is connected with output fibers. The laser provided by the invention has the advantages that effects such as spatial hole burning and the like can be effectively avoided; relatively long gain fibers are used for acquiring relatively high power output; and the wavelength of the single-frequency seed laser can be switched to adjust the wavelength of the ring cavity Q-switching single-frequency fiber laser.
Description
Technical field
The present invention relates to a kind of fiber laser, especially a kind of seed that obtains single-frequency laser output injects transfers the Q single frequency optical fiber laser.
Background technology
Fiber laser is the laser take the optical fiber of doped with rare-earth elements as gain media, by the different rare earth element that mixes, such as bait (Er), an an ancient unit of weight equal to 20 or 24 *taels of silver (Yb), thulium (Tm), holmium (Ho), neodymium (Nd) etc., the service band of fiber laser covered from ultraviolet to infrared.Compare with other lasers, it is low that fiber laser has the laser work threshold value, energy transformation ratio is high, output beam quality is good, compact conformation, working stability, need not the distinguishing features such as light path adjustment, perfect heat-dissipating, long service life and Maintenance free, therefore is rapidly developed and uses widely.
SF pulse optical fibre laser except possessing the general advantage of fiber laser, can provide narrow linewidth simultaneously, high-peak power, and these characteristics make it be widely used in the fields such as sensing, radar, spectroscopy, nonlinear optics.The pure-tone pulse laser realizes by building very short (several centimetres) laser cavity usually, but usually because gain fibre that the power that (gain that provides is less) obtain relatively is provided is not high, and linear cavity has the effect such as spatial hole burning and affects laser performance.
Summary of the invention
The objective of the invention is to overcome above-mentioned the deficiencies in the prior art, provide a kind of method of injecting by seed to obtain the fiber laser of single-frequency laser output.
The present invention can reach by following measure.
A kind of seed injects transfers the Q single frequency optical fiber laser, comprise the single-frequency seed laser, fiber coupler (coupler), optical-fiber bundling device (Combiner or WDM), the pumping semiconductor laser, gain fibre, fibre optic isolater, transfer the Q optical switch, band pass filter, fiber coupler (coupler) and output optical fibre, the output tail optical fiber that it is characterized in that the single-frequency seed laser is connected in the fiber coupler input port, the output optical fibre port of fiber coupler is connected the signal input port of optical-fiber bundling device with the pumping semiconductor laser, the optical-fiber bundling device output port is connected with the fibre optic isolater input through gain fibre, the fibre optic isolater output is connected with transferring the Q optical switch, transfer the Q optical switch other end to be connected with a fiber band-pass filter, the band pass filter other end is connected in the fiber coupler input, and the fiber coupler output is connected with output optical fibre.
The present invention injects a seed laser in common circular cavity optic fibre laser the inside by fiber coupler, the injecting power of single-frequency seed laser and pumping semiconductor laser, single-frequency, stable, narrow linewidth are complementary, to realize that seed laser is to the induction of laser output mode.
The present invention induces laser cavity in the place's starting of oscillation of the single-frequency pattern place of the seed laser that injects by the injection of seed single frequency laser, has realized the single-frequency of longer laser annular chamber, narrow-linewidth laser output.
Fibre of the present invention can be single cladded fiber, also can be doubly clad optical fiber, can be any rare-earth doped optical fibre (Yb, Er, Tm, Ho, Nd, etc.), also can be multiple rare earth co-doped fiber (Er/Yb, Tm/Ho, etc.).
The present invention is various forms of optical switches, comprises acousto-optic modulator, electrooptic modulator, magneto optical modulator etc.
The present invention has following advantage: the one, and can adopt the long relatively long ring cavity structure in chamber to realize single-frequency laser pulse output, effectively avoid the effects such as spatial hole burning; The 2nd, need not obtain single-frequency laser pulse output by control laser cavity length, can obtain relatively high power stage with relatively long gain fibre; The 3rd, can pass through to regulate the wavelength realization of single-frequency seed laser to the adjusting of circular chamber regulating Q single frequency optical fiber laser wavelength.
Description of drawings
Accompanying drawing is structural representation of the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing.
As shown in the figure, a kind of seed injects transfers the Q single frequency optical fiber laser, comprise single-frequency seed laser 1, fiber coupler (coupler) 2, optical-fiber bundling device (Combiner or WDM) 3, pumping semiconductor laser 4, gain fibre 5, fibre optic isolater 6, transfer Q optical switch 7, band pass filter 8, fiber coupler (coupler) 9 and output optical fibre 10, the structure of above-mentioned each part is same as the prior art, this does not give unnecessary details, gain fibre 5 of the present invention can be single cladded fiber, it also can be doubly clad optical fiber, can be any rare-earth doped optical fibre (Yb, Er, Tm, Ho, Nd, Deng), also can be multiple rare earth co-doped fiber (Er/Yb, Tm/Ho, Deng), transferring Q optical switch 7 can be various forms of optical switches, comprise acousto-optic modulator, electrooptic modulator, magneto optical modulator etc., the output tail optical fiber that the invention is characterized in single-frequency seed laser 1 is connected in fiber coupler 2 input ports, the output optical fibre port of fiber coupler 2 is connected the signal input port that connects optical-fiber bundling device 3 with the pumping semiconductor laser, optical-fiber bundling device 3 output ports are connected with fibre optic isolater 6 inputs through gain fibre 5, fibre optic isolater 6 outputs are connected with transferring Q optical switch 7, transfer Q optical switch 7 other ends to be connected with a fiber band-pass filter 8, band pass filter 8 other ends are connected in fiber coupler 9 inputs, fiber coupler 9 outputs are connected with output optical fibre 10, the present invention injects a seed laser in common circular cavity optic fibre laser the inside by fiber coupler, the injecting power of single-frequency seed laser and pumping semiconductor laser, single-frequency, stable, narrow linewidth is complementary, to realize that seed laser is to the induction of laser output mode.
The present invention induces laser cavity in the place's starting of oscillation of the single-frequency pattern place of the seed laser that injects by the injection of seed single frequency laser, has realized the single-frequency of longer laser annular chamber, narrow-linewidth laser output.
Fibre of the present invention can be single cladded fiber, also can be doubly clad optical fiber, can be any rare-earth doped optical fibre (Yb, Er, Tm, Ho, Nd, etc.), also can be multiple rare earth co-doped fiber (Er/Yb, Tm/Ho, etc.).
The present invention is various forms of optical switches, comprises acousto-optic modulator, electrooptic modulator, magneto optical modulator etc.
The present invention has following advantage: the one, and can adopt the long relatively long ring cavity structure in chamber to realize single-frequency laser pulse output, effectively avoid the effects such as spatial hole burning; The 2nd, need not obtain single-frequency laser pulse output by control laser cavity length, can obtain relatively high power stage with relatively long gain fibre; The 3rd, can pass through to regulate the wavelength realization of single-frequency seed laser to the adjusting of circular chamber regulating Q single frequency optical fiber laser wavelength.
Claims (5)
1. a seed injects and transfers the Q single frequency optical fiber laser, comprise the single-frequency seed laser, fiber coupler, optical-fiber bundling device, the pumping semiconductor laser, gain fibre, fibre optic isolater, transfer the Q optical switch, band pass filter, fiber coupler and output optical fibre, the output tail optical fiber that it is characterized in that the single-frequency seed laser is connected in the fiber coupler input port, the output optical fibre port of fiber coupler is connected the signal input port of optical-fiber bundling device with the pumping semiconductor laser, the optical-fiber bundling device output port is connected with the fibre optic isolater input through gain fibre, the fibre optic isolater output is connected with transferring the Q optical switch, transfer the Q optical switch other end to be connected with a fiber band-pass filter, the band pass filter other end is connected in the fiber coupler input, and the fiber coupler output is connected with output optical fibre.
2. a kind of seed according to claim 1 injects and transfers the Q single frequency optical fiber laser, it is characterized in that injecting a seed laser in common circular cavity optic fibre laser the inside by fiber coupler, the injecting power of single-frequency seed laser and pumping semiconductor laser, single-frequency, stable, narrow linewidth are complementary, and realize that seed laser is to the induction of laser output mode.
3. a kind of seed according to claim 1 injects and transfers the Q single frequency optical fiber laser, it is characterized in that the injection by the seed single frequency laser, induce laser cavity in the place's starting of oscillation of the single-frequency pattern place of the seed laser that injects, realized the single-frequency of longer laser annular chamber, narrow-linewidth laser output.
4. a kind of seed according to claim 1 injects and transfers the Q single frequency optical fiber laser, it is characterized in that gain fibre is single cladded fiber.
5. a kind of seed according to claim 1 injects and transfers the Q single frequency optical fiber laser, it is characterized in that gain fibre is doubly clad optical fiber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103291870A CN102856781A (en) | 2012-09-07 | 2012-09-07 | Seed injecting Q-switching single-frequency fiber laser |
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| CN2012103291870A CN102856781A (en) | 2012-09-07 | 2012-09-07 | Seed injecting Q-switching single-frequency fiber laser |
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| CN102856781A true CN102856781A (en) | 2013-01-02 |
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| CN2012103291870A Pending CN102856781A (en) | 2012-09-07 | 2012-09-07 | Seed injecting Q-switching single-frequency fiber laser |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106936064A (en) * | 2017-05-21 | 2017-07-07 | 北京工业大学 | A kind of single longitudinal mode pulse laser based on continuous light injection seeded |
| CN107482432A (en) * | 2017-08-16 | 2017-12-15 | 中国科学院上海光学精密机械研究所 | Annular multi-pass laser amplification device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051164A (en) * | 2006-04-06 | 2007-10-10 | 杨爱萍 | Circular chamber regulating Q optical fiber laser regenerating amplifier |
| CN102628797A (en) * | 2012-04-18 | 2012-08-08 | 山东省科学院激光研究所 | Active cavity gas detection system based on laser injection mode locking technology |
| CN202749674U (en) * | 2012-09-07 | 2013-02-20 | 山东海富光子科技股份有限公司 | Seed injection Q-switched single-frequency optical fiber laser |
-
2012
- 2012-09-07 CN CN2012103291870A patent/CN102856781A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101051164A (en) * | 2006-04-06 | 2007-10-10 | 杨爱萍 | Circular chamber regulating Q optical fiber laser regenerating amplifier |
| CN102628797A (en) * | 2012-04-18 | 2012-08-08 | 山东省科学院激光研究所 | Active cavity gas detection system based on laser injection mode locking technology |
| CN202749674U (en) * | 2012-09-07 | 2013-02-20 | 山东海富光子科技股份有限公司 | Seed injection Q-switched single-frequency optical fiber laser |
Non-Patent Citations (1)
| Title |
|---|
| RENJIE ZHOU等: "Transform-Limited, Injection Seeded, Q-Switched, Ring Cavity Fiber Laser", 《JOURNAL OF LIGHTWAVE TECHNOLOGY》, vol. 30, no. 16, 15 August 2012 (2012-08-15), XP011451191, DOI: 10.1109/JLT.2012.2201446 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106936064A (en) * | 2017-05-21 | 2017-07-07 | 北京工业大学 | A kind of single longitudinal mode pulse laser based on continuous light injection seeded |
| CN107482432A (en) * | 2017-08-16 | 2017-12-15 | 中国科学院上海光学精密机械研究所 | Annular multi-pass laser amplification device |
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Application publication date: 20130102 |