CN101770132A - Visible light strengthened super continuous spectrum laser system with all-optical-fiber structure - Google Patents
Visible light strengthened super continuous spectrum laser system with all-optical-fiber structure Download PDFInfo
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- CN101770132A CN101770132A CN200810236572A CN200810236572A CN101770132A CN 101770132 A CN101770132 A CN 101770132A CN 200810236572 A CN200810236572 A CN 200810236572A CN 200810236572 A CN200810236572 A CN 200810236572A CN 101770132 A CN101770132 A CN 101770132A
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Abstract
A visible light strengthened super continuous spectrum laser system with an all-optical-fiber structure comprises an optical fiber mode-locked laser, a single mode fiber amplifier, an opto-isolator, a double cladding fiber amplifier, a nonlinear photonic crystal fiber. The single mode fiber amplifier is connected with the output of the optical fiber mode-locked laser through an optical fiber; the opto-isolator is connected with the output of the single mode fiber amplifier through the optical fiber; the double cladding fiber amplifier is connected with the output of the opto-isolator through the optical fiber; and an output end of the double cladding fiber amplifier is connected with an input end of the nonlinear photonic crystal fiber through a pulling optical fiber. The system of the invention solves the technical problems that the high-power laser coupling device of the background art has huge volume, low coupling efficiency and limited spectral region. The system has the advantages of simple structure, small volume, high coupling efficiency, reliable engineering, capability of covering the visible light wave band and the like.
Description
Technical field
The present invention relates to laser field, be specifically related to a kind of visible light strengthened super continuous spectrum laser system of all optical fibre structure.
Background technology
When laser pulse transmits, various nonlinear effects can take place in the high non-linearity medium, make video stretching to hundreds of nanometer even wideer, this extreme video stretching phenomenon is called the generation of super continuous spectrums.Super continuum source is compared with other light source, has continuous spectrum bandwidth, reliable and stable, plurality of advantages such as the coherence is good.Super continuous spectrums laser shows and spectral analysis etc. all has very important using value aspect many in biomedicine, light metrology, optical communication, coherent measurement, optics.The super continuous spectrums of visible light wave range has inestimable value in fields such as laser display, biological spectrum analysis, photoelectronic warfares especially.With respect to other solid or liquid nonlinear medium, highly nonlinear optical fiber, is more suitable in being used in the super continuous spectrums generation system with practical value with the physical characteristics of its portable and stable as nonlinear medium.Existing how tame both at home and abroad at present research institution uses highly nonlinear optical fiber as super continuous spectrums generation medium, under laser pumping, produce super continuous spectrums, but owing to be subjected to the restriction of nonlinear optical fiber zero dispersion point, using under the situation of infrared laser as pumping source, the wave band that the general super continuous spectrums that produces covers concentrates on near-infrared band mostly, have only a small amount of spectrum to enter visible light wave range, this has just limited the application of super continuous spectrums at visible-range.And also be a key factor of restriction super continuous spectrums average power to the coupling of nonlinear optical fiber as the laser of pumping, existing high-power laser coupling device all adopts lens combination to do sky and asks coupling, the lens combination design is complicated, bulky, coupling efficiency also is difficult to improve, this coupling process is difficult to realize the requirement of Engineering Reliability also to the environmental requirement harshness.
Summary of the invention
The object of the present invention is to provide a kind of visible light strengthened super continuous spectrum laser system of all optical fibre structure, it has solved technical matterss such as the high-power laser coupling device volume is huge in the background technology, coupling efficiency is low, spectral range is limited.
Technical scheme of the present invention is:
A kind of system of visible light strengthened super continuous spectrum laser of all optical fibre structure, comprise optical fiber mode-locked laser 1, the single-mode fiber amplifier 2 that is connected through optical fiber with the output of optical fiber mode-locked laser 1, the optoisolator 3 that is connected through optical fiber with the output of single-mode fiber amplifier 2, the double-cladding fiber amplifier 4 that is connected through optical fiber with the output of optoisolator 3, this system also comprises non-linear photon crystal optical fiber 6, and the output terminal of double-cladding fiber amplifier 4 is connected by drawing dimension optical fiber 5 with the input end of non-linear photon crystal optical fiber 6.
The output terminal of above-mentioned tapered fiber 5 and double-cladding fiber amplifier 4 and the input end of non-linear photon crystal optical fiber 6 be connected to welding.
Above-mentioned non-linear photon crystal optical fiber 6 is two or more.
Be connected to welding between the above-mentioned non-linear photon crystal optical fiber 6.
The present invention has simple in structure, and volume is little, the coupling efficiency height, and engineering is reliable, can cover advantages such as visible light wave range.
Description of drawings:
Fig. 1 is the structural representation of the visible light strengthened super continuous spectrum laser system of all optical fibre structure of the present invention.
Reference numeral:
1-optical fiber mode-locked laser, 2-single-mode fiber amplifier, 3-optoisolator, 4-double-cladding fiber amplifier, 5-tapered fiber, 6-non-linear photon crystal optical fiber.
Embodiment:
Referring to Fig. 1,
A kind of system of visible light strengthened super continuous spectrum laser of all optical fibre structure, comprise optical fiber mode-locked laser 1, the single-mode fiber amplifier 2 that is connected through optical fiber with the output of optical fiber mode-locked laser 1, the optoisolator 3 that is connected through optical fiber with the output of single-mode fiber amplifier 2, the double-cladding fiber amplifier 4 that is connected through optical fiber with the output of optoisolator 3, this system also comprises non-linear photon crystal optical fiber 6, and the output terminal of double-cladding fiber amplifier 4 is tieed up optical fiber 5 welding mutually with the input end of non-linear photon crystal optical fiber 6 by drawing.Non-linear photon crystal optical fiber 6 is two or more, and it is welding each other, and reduces step by step along zero-dispersion wavelength.
Principle of work is as follows:
The seed light source of this system adopts homemade " 8 " font chamber mode locked fiber laser, this laser instrument output nJ level single pulse energy, spectral width 1.5nm, the about 500ps of pulse width; The short-pulse laser that produces by optical fiber mode-locked laser 1 carries out the energy amplification through optical fiber input single-mode ytterbium-doping fiber amplifier 2; Under the pumping of the 976nm semiconductor laser that is coupled by wavelength division multiplexer, the seed laser single pulse energy is amplified to tens nJ; Then single-mode fiber amplifier 2 amplifying signals are coupled into again the fibre core of double clad Yb dosed optical fiber through fused fiber splice by optoisolator 3; This doubly clad optical fiber is connected to 6 100um core optical fibers by the bundling device in the double-cladding fiber amplifier, and this six roots of sensation optical fiber is all connecting the output terminal of 976nm semiconductor laser, for the double clad Yb dosed optical fiber provides pump light.Such bundling device constitutes another level fiber amplifier together with semiconductor laser, double clad Yb dosed optical fiber, and under tens of watts of 976nm laser pump (ing) power, the pulsed laser energy that previous stage is come is amplified to the uJ magnitude.The tapered fiber 5 that forms through fused biconical taper is as pattern match optical fiber again, the mould field parameter of one end and doubly clad optical fiber coupling, the mould field parameter of the other end is with non-linear photon crystal optical fiber 6 couplings, with the nonlinear optical fiber input end of doubly clad optical fiber output terminal, different zero dispersion values respectively with the tapered fiber welding, just finished the low-loss coupling of amplifying laser, in nonlinear optical fiber 6, excited super continuous spectrums to carry out the transition to visible light wave range gradually to nonlinear optical fiber.Use similar fused biconical taper optical fiber as mould matching transition optical fiber, or directly use the method for welding, can be with the welding successively of two or more zero-dispersion wavelengths nonlinear optical fiber decrescence, just finished the cascade of nonlinear optical fiber, this zero dispersion values decrescence cascaded optical fiber can shift the super continuous spectrums energy in the laser pulse transmission course to shortwave, realize the enhancing of visible light wave range.
Claims (4)
1. the visible light strengthened super continuous spectrum laser system of an all optical fibre structure, comprise optical fiber mode-locked laser (1), the single-mode fiber amplifier (2) that is connected through optical fiber with the output of optical fiber mode-locked laser (1), the optoisolator (3) that is connected through optical fiber with the output of single-mode fiber amplifier (2), the double-cladding fiber amplifier (4) that is connected through optical fiber with the output of optoisolator (3), this system also comprises non-linear photon crystal optical fiber (6), it is characterized in that: the output terminal of described double-cladding fiber amplifier (4) is connected by drawing dimension optical fiber (5) with the input end of non-linear photon crystal optical fiber (6).
2. the visible light strengthened super continuous spectrum laser system of all optical fibre structure according to claim 1 is characterized in that: the output terminal of described tapered fiber (5) and double-cladding fiber amplifier (4) and the input end of non-linear photon crystal optical fiber (6) be connected to welding.
3. the visible light strengthened super continuous spectrum laser system of all optical fibre structure according to claim 1 and 2 is characterized in that: described non-linear photon crystal optical fiber (6) is two or more, and their zero-dispersion wavelength successively decreases.
4. the visible light strengthened super continuous spectrum laser system of all optical fibre structure according to claim 3 is characterized in that: be connected to welding between the described non-linear photon crystal optical fiber (6).
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Cited By (12)
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| CN102593701A (en) * | 2012-03-02 | 2012-07-18 | 陈抗抗 | Optical fiber laser with super continuous spectrum |
| CN102967981A (en) * | 2012-12-18 | 2013-03-13 | 中国人民解放军国防科学技术大学 | Super-continuous spectrum light source based on multicore photonic crystal fiber |
| CN103022880A (en) * | 2012-12-17 | 2013-04-03 | 中国联合网络通信集团有限公司 | Device and method for adjusting spectral width of super-continuum spectrum |
| CN104300344A (en) * | 2014-09-22 | 2015-01-21 | 深圳大学 | High-power and tunable pulse fiber laser device |
| CN105071205A (en) * | 2015-07-30 | 2015-11-18 | 复旦大学 | Supercontinuum light source based on mode-locked fiber laser with adjustable pulse width |
| CN105301693A (en) * | 2010-08-30 | 2016-02-03 | Nkt光子学有限公司 | Tapered optical fiber for supercontinuum generation |
| CN105846297A (en) * | 2016-06-12 | 2016-08-10 | 中国工程物理研究院激光聚变研究中心 | White light laser generating system |
| CN106785839A (en) * | 2016-12-16 | 2017-05-31 | 中国电子科技集团公司电子科学研究院 | A kind of optical fiber laser with super continuous spectrum |
| CN107069397A (en) * | 2017-01-12 | 2017-08-18 | 北京工业大学 | A kind of resonator super continuum source output device |
| CN110838670A (en) * | 2019-11-22 | 2020-02-25 | 中国科学院物理研究所 | Dispersion-controlled all-fiber supercontinuum generation device and application |
| CN112152056A (en) * | 2019-06-28 | 2020-12-29 | 中国科学院上海光学精密机械研究所 | Full-fiber large-energy supercontinuum laser |
| CN113659412A (en) * | 2021-07-29 | 2021-11-16 | 中国科学院西安光学精密机械研究所 | All-fiber supercontinuum light source based on graded-index optical fiber |
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| CN201147308Y (en) * | 2008-02-02 | 2008-11-12 | 天津大学 | Complete optical fiber structure ultra-continuous spectrum light source for optical coherent chromatography technique |
| CN201332211Y (en) * | 2008-12-31 | 2009-10-21 | 中国科学院西安光学精密机械研究所 | Visible light enhancement super continuous spectrum laser system with full optical fiber structure |
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| CN105301693B (en) * | 2010-08-30 | 2021-06-29 | Nkt光子学有限公司 | Tapered optical fiber for generating supercontinuum |
| CN105301693A (en) * | 2010-08-30 | 2016-02-03 | Nkt光子学有限公司 | Tapered optical fiber for supercontinuum generation |
| CN102593701A (en) * | 2012-03-02 | 2012-07-18 | 陈抗抗 | Optical fiber laser with super continuous spectrum |
| CN103022880A (en) * | 2012-12-17 | 2013-04-03 | 中国联合网络通信集团有限公司 | Device and method for adjusting spectral width of super-continuum spectrum |
| CN102967981A (en) * | 2012-12-18 | 2013-03-13 | 中国人民解放军国防科学技术大学 | Super-continuous spectrum light source based on multicore photonic crystal fiber |
| CN104300344A (en) * | 2014-09-22 | 2015-01-21 | 深圳大学 | High-power and tunable pulse fiber laser device |
| WO2016045396A1 (en) * | 2014-09-22 | 2016-03-31 | 深圳大学 | Pumped supercontinuum light source based on tunable pulse optical fiber laser |
| CN105071205A (en) * | 2015-07-30 | 2015-11-18 | 复旦大学 | Supercontinuum light source based on mode-locked fiber laser with adjustable pulse width |
| CN105846297A (en) * | 2016-06-12 | 2016-08-10 | 中国工程物理研究院激光聚变研究中心 | White light laser generating system |
| CN106785839A (en) * | 2016-12-16 | 2017-05-31 | 中国电子科技集团公司电子科学研究院 | A kind of optical fiber laser with super continuous spectrum |
| CN107069397A (en) * | 2017-01-12 | 2017-08-18 | 北京工业大学 | A kind of resonator super continuum source output device |
| CN112152056A (en) * | 2019-06-28 | 2020-12-29 | 中国科学院上海光学精密机械研究所 | Full-fiber large-energy supercontinuum laser |
| CN112152056B (en) * | 2019-06-28 | 2022-05-31 | 中国科学院上海光学精密机械研究所 | Full-fiber large-energy supercontinuum laser |
| CN110838670A (en) * | 2019-11-22 | 2020-02-25 | 中国科学院物理研究所 | Dispersion-controlled all-fiber supercontinuum generation device and application |
| CN110838670B (en) * | 2019-11-22 | 2021-07-20 | 中国科学院物理研究所 | Dispersion-controlled all-fiber supercontinuum generation device and application |
| CN113659412A (en) * | 2021-07-29 | 2021-11-16 | 中国科学院西安光学精密机械研究所 | All-fiber supercontinuum light source based on graded-index optical fiber |
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