CN103036136A - Gain switch pulse type single-frequency optical fiber laser - Google Patents
Gain switch pulse type single-frequency optical fiber laser Download PDFInfo
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- CN103036136A CN103036136A CN2013100157003A CN201310015700A CN103036136A CN 103036136 A CN103036136 A CN 103036136A CN 2013100157003 A CN2013100157003 A CN 2013100157003A CN 201310015700 A CN201310015700 A CN 201310015700A CN 103036136 A CN103036136 A CN 103036136A
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Abstract
The invention discloses a gain switch pulse type single-frequency optical fiber laser which is characterized in that a current pulse driver 1 drives a semiconductor-pumped laser 2 with a tail fiber to output pulse laser; the semiconductor-pumped laser 2 with the tail fiber outputs the pulse laser and is connected with the pumping input end of an optical fiber beam combiner 3; the output end of the optical fiber beam combiner 3 is connected with a high-reflectivity optical fiber Bragg grating 4; the other end of the high-reflectivity optical fiber Bragg grating 4 is welded with a gain optical fiber 5; the other end of the gain optical fiber 5 is connected with a low-reflectivity optical fiber Bragg grating 6; and a laser pulse outputted by the low-reflectivity optical fiber Bragg grating 6 is outputted by an output optical fiber 7. The gain switch pulse type single frequency optical fiber laser has the beneficial effects that a method for simply obtaining the single-frequency pulse type optical fiber laser is realized; and the gain switch pulse type single frequency optical fiber laser is excellent in performance and stable in working, simultaneously has the advantages of an optical fiber laser and a single frequency pulse optical fiber laser and can be widely applied to the fields of sensing, radar, optical spectroscopy, non-linear optics and the like.
Description
Technical field
The present invention relates to a kind of fiber laser, especially a kind of gain switch (gain switched) impulse type single frequency optical fiber laser belongs to optical fiber and laser technology field.
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), ytterbium (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, and energy transformation ratio is high, output beam quality good, compact conformation is stablized, need not the light path adjustment, perfect heat-dissipating, the life-span is long and the distinguishing feature such as Maintenance free, therefore is rapidly developed and uses widely.
SF pulse optical fibre laser possesses the general advantage of fiber laser, can provide narrow linewidth simultaneously, high-peak power, and these characteristics make it be widely used in sensing, radar, spectroscopy, the fields such as nonlinear optics.
Summary of the invention
The purpose of this invention is to provide a kind of superior performance, working stability, possess gain switch (gain switched) the impulse type single frequency optical fiber laser of fiber laser and SF pulse optical fibre laser advantage simultaneously.
The present invention can be achieved through the following technical solutions.
A kind of gain switch impulse type single frequency optical fiber laser, comprise: current impulse driver 1, semiconductor pump laser 2 with tail optical fiber, optical-fiber bundling device 3, high reflectance Fiber Bragg Grating FBG 4, gain fibre 5, antiradar reflectivity Fiber Bragg Grating FBG 6 and output optical fibre 7, the semiconductor pump laser 2 output pulse lasers that it is characterized in that current impulse driver 1 rotating band tail optical fiber, semiconductor pump laser 2 output pulse lasers with tail optical fiber link to each other with the pumping input of optical-fiber bundling device 3, optical-fiber bundling device 3 outputs link to each other with high reflectance Fiber Bragg Grating FBG 4, the other end of high reflectance Fiber Bragg Grating FBG 4 and gain fibre 5 weld together, gain fibre 5 other ends are connected with antiradar reflectivity Fiber Bragg Grating FBG 6, and the laser pulse of antiradar reflectivity Fiber Bragg Grating FBG 6 outputs is through output optical fibre 7 outputs.
The pulse laser of output optical fibre 7 outputs of the present invention is single-frequency (single longitudinal mode) laser, and the output of single-frequency laser is to realize by control laser cavity chamber reflectance spectrum bandwidth long and fiber grating.The laser cavity chamber is long: L=L1+ L2+L3; Wherein L1 is that gain fibre, L2 are that high reflective grid tail optical fiber, L3 are low reflective grid tail optical fiber, each longitudinal mode spacing in the laser cavity
, wherein C is light wave propagation velocity in a vacuum, and n is the refractive index of fiber core, and L is that the laser cavity chamber is long.By using highly doped gain fibre to reduce gain fibre length, reduce simultaneously grating tail optical fiber length, control laser cavity chamber length as far as possible short, thereby each longitudinal mode spacing in the increase chamber, use simultaneously the fine grating of the narrower low light reflectivity of reflectance spectrum bandwidth, use this kind method, can guarantee laser single longitudinal mode (single-frequency) output.
The semiconductor pump laser 2 output pumping laser pulses of current impulse driver 1 output pulse current rotating band tail optical fiber of the present invention, this pumping laser pulse is carried out pumping to gain fibre 5 and is realized optical-fiber laser pulse output.
Gain fibre 5 of the present invention can be to mix ytterbium (Yb) optical fiber, mix bait (Er) optical fiber, the bait ytterbium co-doped fiber, mix thulium (Tm) optical fiber or mix holmium (Ho) optical fiber, by using different rear-earth-doped gain fibres, can obtain being operated in the single frequency optical fiber laser of different wave length (1um, 1.5um, 2um etc.).
The present invention has realized a kind of easy acquisition pure-tone pulse type fiber laser, and its superior performance, working stability have advantages of that simultaneously fiber laser and SF pulse optical fibre laser possess, can extensively be applied to sensing, radar, spectroscopy, the fields such as nonlinear optics.
Description of drawings
Fig. 1 is a kind of structural representation of the present invention.
Description of drawings: current impulse driver 1, the semiconductor pump laser 2 with tail optical fiber, optical-fiber bundling device 3, high reflectance Fiber Bragg Grating FBG 4, gain fibre 5, antiradar reflectivity Fiber Bragg Grating FBG 6, output optical fibre 7.
Embodiment
The invention will be further described by reference to the accompanying drawings.
As shown in Figure 1, a kind of gain switch impulse type single frequency optical fiber laser, comprise: current impulse driver 1, semiconductor pump laser 2 with tail optical fiber, optical-fiber bundling device 3, high reflectance Fiber Bragg Grating FBG 4, gain fibre 5, antiradar reflectivity Fiber Bragg Grating FBG 6 and output optical fibre 7, above-mentioned each part is same as the prior art, this does not give unnecessary details, the invention is characterized in the semiconductor pump laser 2 output pulse lasers of current impulse driver 1 rotating band tail optical fiber, semiconductor pump laser 2 output pulse lasers with tail optical fiber link to each other with the pumping input of optical-fiber bundling device 3, optical-fiber bundling device 3 outputs link to each other with high reflectance Fiber Bragg Grating FBG 4, the other end of high reflectance Fiber Bragg Grating FBG 4 and gain fibre 5 weld together, gain fibre 5 other ends are connected with antiradar reflectivity Fiber Bragg Grating FBG 6, and the laser pulse of antiradar reflectivity Fiber Bragg Grating FBG 6 outputs is through output optical fibre 7 outputs.
The pulse laser of output optical fibre 7 outputs of the present invention is single-frequency (single longitudinal mode) laser, and the output of single-frequency laser is to realize by control laser cavity chamber reflectance spectrum bandwidth long and fiber grating.The laser cavity chamber is long: L=L1+ L2+L3; Wherein L1 is that gain fibre, L2 are that high reflective grid tail optical fiber, L3 are low reflective grid tail optical fiber, each longitudinal mode spacing in the laser cavity
, wherein C is light wave propagation velocity in a vacuum, and n is the refractive index of fiber core, and L is that the laser cavity chamber is long.By using highly doped gain fibre to reduce gain fibre length, reduce simultaneously grating tail optical fiber length, control laser cavity chamber length as far as possible short, thereby each longitudinal mode spacing in the increase chamber, use simultaneously the fine grating of the narrower low light reflectivity of reflectance spectrum bandwidth, use this kind method, can guarantee laser single longitudinal mode (single-frequency) output.
Gain switch of the present invention (gain switched) impulse type single frequency optical fiber laser, the pulse laser of output are single-frequency (single longitudinal mode) laser, and single longitudinal mode laser output is by long realization the in control laser cavity chamber.
Gain switch of the present invention (gain switched) impulse type single frequency optical fiber laser, current impulse driver output pulse current drives semiconductor pump laser output pumping laser pulse, and this pumping laser pulse is carried out pumping to gain fibre and realized optical-fiber laser pulse output.
Gain switch of the present invention (gain switched) impulse type single frequency optical fiber laser, gain fibre can be to mix ytterbium (Yb) optical fiber, mix bait (Er) optical fiber, the bait ytterbium co-doped fiber, mix thulium (Tm) optical fiber or mix holmium (Ho) optical fiber, by using different rear-earth-doped gain fibres, can obtain being operated in different wave length (1um, 1.5um, 2um etc.) single frequency optical fiber laser.
Claims (9)
1. gain switch impulse type single frequency optical fiber laser, comprise: current impulse driver 1, semiconductor pump laser 2 with tail optical fiber, optical-fiber bundling device 3, high reflectance Fiber Bragg Grating FBG 4, gain fibre 5, antiradar reflectivity Fiber Bragg Grating FBG 6 and output optical fibre 7, the semiconductor pump laser 2 output pulse lasers that it is characterized in that current impulse driver 1 rotating band tail optical fiber, semiconductor pump laser 2 output pulse lasers with tail optical fiber link to each other with the pumping input of optical-fiber bundling device 3, optical-fiber bundling device 3 outputs link to each other with high reflectance Fiber Bragg Grating FBG 4, the other end of high reflectance Fiber Bragg Grating FBG 4 and gain fibre 5 weld together, gain fibre 5 other ends are connected with antiradar reflectivity Fiber Bragg Grating FBG 6, and the laser pulse of antiradar reflectivity Fiber Bragg Grating FBG 6 outputs is through output optical fibre 7 outputs.
2. described a kind of gain switch impulse type single frequency optical fiber laser according to claim 1, the pulse laser that it is characterized in that output optical fibre 7 outputs is single-frequency laser, and the output of single-frequency laser is to realize by control laser cavity chamber reflectance spectrum bandwidth long and fiber grating.
3. the laser cavity chamber is long: L=L1+ L2+L3; Wherein L1 is that gain fibre, L2 are that high reflective grid tail optical fiber, L3 are low reflective grid tail optical fiber, each longitudinal mode spacing in the laser cavity
Wherein C is light wave propagation velocity in a vacuum, n is the refractive index of fiber core, and L is that the laser cavity chamber is long, reduces gain fibre length by using highly doped gain fibre, reduce simultaneously grating tail optical fiber length, control laser cavity chamber length as far as possible short, thereby increase each longitudinal mode spacing in the chamber, use simultaneously the fine grating of the narrower low light reflectivity of reflectance spectrum bandwidth, use this kind method, can guarantee laser single longitudinal mode (single-frequency) output.
4. described a kind of gain switch impulse type single frequency optical fiber laser according to claim 1, it is characterized in that the semiconductor pump laser 2 output pumping laser pulses of current impulse driver 1 output pulse current rotating band tail optical fiber, this pumping laser pulse is carried out pumping to gain fibre 5 and is realized optical-fiber laser pulse output.
5. described a kind of gain switch impulse type single frequency optical fiber laser according to claim 1 is characterized in that gain fibre uses different rear-earth-doped, can obtain being operated in the single frequency optical fiber laser of different wave length.
6. described a kind of gain switch impulse type single frequency optical fiber laser according to claim 1 is characterized in that gain fibre is to mix ytterbium (Yb) optical fiber.
7. described a kind of gain switch impulse type single frequency optical fiber laser according to claim 1 is characterized in that gain fibre is to mix bait (Er) optical fiber.
8. described a kind of gain switch impulse type single frequency optical fiber laser according to claim 1 is characterized in that gain fibre is the bait ytterbium co-doped fiber.
9. described a kind of gain switch impulse type single frequency optical fiber laser according to claim 1 is characterized in that gain fibre is to mix thulium (Tm) optical fiber or mix holmium (Ho) optical fiber.
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| CN2013100157003A CN103036136A (en) | 2013-01-16 | 2013-01-16 | Gain switch pulse type single-frequency optical fiber laser |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236630A (en) * | 2013-05-05 | 2013-08-07 | 山东海富光子科技股份有限公司 | Single-frequency optical fiber laser using rare earth-doped quartz optical fiber as gain medium |
| CN103531994A (en) * | 2013-10-11 | 2014-01-22 | 山东海富光子科技股份有限公司 | Same-bandwidth pumping single-frequency optical fiber laser using erbium-doped quartz optical fiber as gain medium |
| CN103944044A (en) * | 2014-03-20 | 2014-07-23 | 天津欧泰激光科技有限公司 | Semiconductor pumping 1-micron single-frequency fiber laser device with ytterbium-doped silica fibers |
| CN104362496A (en) * | 2014-11-17 | 2015-02-18 | 山东海富光子科技股份有限公司 | High-power narrow-linewidth linear polarization fiber laser |
| CN107492780A (en) * | 2017-09-05 | 2017-12-19 | 浙江师范大学 | Dipulse optical-fiber laser output intent based on gain switch technology |
| CN109700595A (en) * | 2018-12-29 | 2019-05-03 | 中国科学院宁波工业技术研究院慈溪生物医学工程研究所 | A kind of conjunctiva treatment system based on 2 mu m waveband gain switch optical fiber lasers |
| CN112636144A (en) * | 2020-12-24 | 2021-04-09 | 北京遥测技术研究所 | Novel large-energy single-frequency pulse laser |
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| WO2009149703A1 (en) * | 2008-06-12 | 2009-12-17 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for generating pulsed laser radiation using a fibre laser |
| CN101826697A (en) * | 2010-05-26 | 2010-09-08 | 华中科技大学 | Method for manufacturing distributed Bragg reflection optical fiber laser |
| CN202183551U (en) * | 2011-09-05 | 2012-04-04 | 苏州图森激光有限公司 | Single longitudinal mode and narrow line width fiber laser |
| CN102801090A (en) * | 2012-08-13 | 2012-11-28 | 温州泛波激光有限公司 | Long-pulse fiber laser |
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2013
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2009149703A1 (en) * | 2008-06-12 | 2009-12-17 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Method for generating pulsed laser radiation using a fibre laser |
| CN101826697A (en) * | 2010-05-26 | 2010-09-08 | 华中科技大学 | Method for manufacturing distributed Bragg reflection optical fiber laser |
| CN202183551U (en) * | 2011-09-05 | 2012-04-04 | 苏州图森激光有限公司 | Single longitudinal mode and narrow line width fiber laser |
| CN102801090A (en) * | 2012-08-13 | 2012-11-28 | 温州泛波激光有限公司 | Long-pulse fiber laser |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236630A (en) * | 2013-05-05 | 2013-08-07 | 山东海富光子科技股份有限公司 | Single-frequency optical fiber laser using rare earth-doped quartz optical fiber as gain medium |
| CN103531994A (en) * | 2013-10-11 | 2014-01-22 | 山东海富光子科技股份有限公司 | Same-bandwidth pumping single-frequency optical fiber laser using erbium-doped quartz optical fiber as gain medium |
| CN103944044A (en) * | 2014-03-20 | 2014-07-23 | 天津欧泰激光科技有限公司 | Semiconductor pumping 1-micron single-frequency fiber laser device with ytterbium-doped silica fibers |
| CN104362496A (en) * | 2014-11-17 | 2015-02-18 | 山东海富光子科技股份有限公司 | High-power narrow-linewidth linear polarization fiber laser |
| CN107492780A (en) * | 2017-09-05 | 2017-12-19 | 浙江师范大学 | Dipulse optical-fiber laser output intent based on gain switch technology |
| CN109700595A (en) * | 2018-12-29 | 2019-05-03 | 中国科学院宁波工业技术研究院慈溪生物医学工程研究所 | A kind of conjunctiva treatment system based on 2 mu m waveband gain switch optical fiber lasers |
| CN112636144A (en) * | 2020-12-24 | 2021-04-09 | 北京遥测技术研究所 | Novel large-energy single-frequency pulse laser |
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Application publication date: 20130410 |