Experimental research on amplifier stage self-excited oscillation of MOPA fiber

Abstract

Abstract: In high power laser master oscillation power amplification, amplification of spontaneous emission and self-excited oscillation on the laser output characteristic has a significant effect. Based on the design and building of MOPA fiber laser system, studies the self-excited oscillation and pump power, signal light power and gain the relationship between the length of optical fiber.The results showed that with the increase of the intensity of the pump, self-excited oscillation of power increased; Under the condition of the power to determine the pump and enhance the signal light power, the strength of the self-excited oscillation will decrease; Appropriate to minimize the length of gain fiber, also have certain effect to inhibit the self-excited oscill.

Key words: self-oscillation

CLC Number:

TN248.1

References

[ ] 陈苗海. 高功率光纤放大器的研究进展. 激光与红外.2007.37(7):589-592
Chen M H.Research Progress of High-power Fiber Lasers[J]. Laser and Infrared.2007.37(7):589-592.
[ ] J. Swiderski, A. Zajac. M. Skorczakowski. Pulsed ytterbium-doped large mode area double-clad fiber amplifier in MOPA configuration[J]. Opto-Electronics Review. 2007.15(2):98-101
[ ] Mears R J, Baker S R. Erbium fiber amplifiers and lasers[J]. Optical and Quantum Electron. 1992, 24(5): 517-538.
[ ] 庞勇，叶勇，蒋佩璇，等. 端面附近缺陷在掺铒光纤中引起的振荡[J]. 光学学报，1996, 16(8): 1133-1135
Pang Y, Ye Y, Jiang P, etal. Oscillation in erbium doped fiber due to near end defects[J]. Acta Optica Sinica. 1996,16(8): 1133-1135.
[ ] 陈博, 宁继平, 张伟毅. 同步脉冲泵浦抑制光纤放大自发辐射实验研究[J]. 激光与红外. 2012, 42(2):143-148.
Chen B, Ning J P, Zhang W Y. Experimental research on restraining amplified spontaneous emission of fiber amplifier by synchronous pulse pumping[J]. Laser and Infrared.2012,42(2):143-148.
[ ] 陈爽, 王玲. 光纤端面反射对高功率光纤放大器特性的影响[J]. 强激光与粒子束. 2008, 20(12):1997-2000
Chen S, Wang L. Effects of reflection of fiber end on characteristics of high power fiber amplifier[J]. High Power Laser and Particle Beams. 2008, 20(12):1997-2000.
[ ] 慕伟，赵楚军. 一体式高功率光纤泵浦耦合器及其制作技术[J]. 光电子激光，2009, 20(11):1446-1449.
Mu W, Zhao C. Fabrication of integral high power optical fiber pump combiners and the feature analysis[J]. Journal of Optoelectronics Laser,2009.20(11):1446-1449.
[ ] Jeong Y, Sahu J K, Payne D N. Ytterbium-doped large core fiber with 1 kW continuous-wave output power[J]. Elect. Letter, 2004,40(8):470-472
[ ] 李勇男, 谢春霞, 吕福云. 脉冲泵浦调Q光纤激光器的优化设计[J]. 光电子技术. 2006,26(1):22-27.
Li Y N, Xie C X, Lv F Y. Optimal design of the pulsed pump Q-swiched fiber lasers[J]. Optoelectronic Technology. 2006,26(1):22-27.
[ ] 李晓光, 胡贵军, 李公羽, 张鹏. Er/Yb共掺双包层光纤放大器的自激振荡[J]. 光电子激光. 2010,6(21):841-846.
Li X G, Hu G J, Li G Y, Zhang P. Self-oscillation of Er/Yb co-doped double-clad fiber amplifier[J]. Journal of Optoelectronics Laser. 2010,6(21):841-846.
[ ] 姚建铨, 任广军, 张强, 王鹏. 掺镱双包层光纤激光器及其泵浦耦合技术[J]. 激光杂志. 2006,27(5):1-5
Yao J Q, Ren G J, Zhang Q, Wang P. Yb doped double clad fiber laser and pump coupling technology[J]. Laser Journal. 2006,27(5):1-5.

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