Experimental study about all-fiber high-gain pulse fiber amplifiers

ZHANG Peng; DUAN Yun-feng; HUANG Bang-cai; PAN Rong; NING Ding

doi:10.3969/j.issn.1001-3806.2009.05.002

In order to study the characteristics of pulse amplification in multi-stage cascade ytterbium-doped fiber amplifiers,the three-stage high-gain pulse fiber amplifier with all-fiber structure was experimentally studied based on the master oscillator power amplifier(MOPA)technology.The length of the gain fibers and the pump powers in every stage were optimized experimentally to obtain high signal gain,and the spurious lasing of the amplification stimulation emission light was suppressed at the same time.The stable output was obtained with a peak wavelength of 1064nm,pulse duration of 19ns,repetition frequency of 5kHz,the peak power of 3.8kW,and the total gain of 43.8dB.The compact prototype of an all-fiber pulse fiber amplifier was developed and used to amplify a pulse signal at 1Hz repetition frequency,a signal gain of 43.2dB was obtained.The results show that this amplifier has a good amplification effect on the pulse signal at a low repetition frequency.

Experimental study about all-fiber high-gain pulse fiber amplifiers

1. The 46th Research Institute, China Electronics Technology Group Corporation, Tianjin 300220, China

Received Date: 2008-11-08

Accepted Date: 2008-02-12

Available Online: 2009-10-25

Abstract: In order to study the characteristics of pulse amplification in multi-stage cascade ytterbium-doped fiber amplifiers,the three-stage high-gain pulse fiber amplifier with all-fiber structure was experimentally studied based on the master oscillator power amplifier(MOPA)technology.The length of the gain fibers and the pump powers in every stage were optimized experimentally to obtain high signal gain,and the spurious lasing of the amplification stimulation emission light was suppressed at the same time.The stable output was obtained with a peak wavelength of 1064nm,pulse duration of 19ns,repetition frequency of 5kHz,the peak power of 3.8kW,and the total gain of 43.8dB.The compact prototype of an all-fiber pulse fiber amplifier was developed and used to amplify a pulse signal at 1Hz repetition frequency,a signal gain of 43.2dB was obtained.The results show that this amplifier has a good amplification effect on the pulse signal at a low repetition frequency.

HTML

Reference (9)

[1]	LOU Q H,ZHOU J,KONG L F,et al.Recent progress of high power pulsed double clading fiber lasers[J].Chinese Journal of Quantum Electronics,2005,22(4):510-515(in Chinese).
[2]	DUAN Y F,HUANG B C,ZHANG P,et al.Experimental study of the all-fiber pulse fiber amplifier[J].Chinese Journal of Lasers,2007,34(10):1379-1382(in Chinese).
[3]	WRIGHT M W,VALLEY G C.Yb-doped fiber amplifier for deep-space optical communications[J].Journal of Lightwave Technology,2005,23(3):1369-1374.
[4]	PHILIPPOV V,CODEMARD C,JEONG Y.High-energy in-fiber pulse amplification for coherent lidar applications[J].Opt Lett,2004,29(22):2590-2592.
[5]	CHENG M Y,CHANG Y C,GALVANAUSKAS A,et al.High-energy and high-peak-power nanosecond pulse generation with beam quality control in 200mm core highly multimode Yb-doped fiber amplifiers[J].Opt Lett,2005,30(4):358-360.
[6]	TEODORO F D,BROOKS C D.Fiber sources reach multimegawatt peak power in ns pulses[J].Laser Focus World,2006,42(11):94-98.
[7]	YE C G,YAN P,GONG M L,et al.Pulsed pumped Yb-doped fiber amplifier at low repetition rate[J].Chinese Optics Letters,2005,3(5):249-250.
[8]	DU S T,ZHOU J,ZHANG F P,et al.20W average power,high repetition rate,nanosecond pulse with diffraction limit from an all-fiber MOPA system[J].Microwave and Optical Technology Letters,2008,50(10):2546-2549.
[9]	ZHAN Y,ZHENG Y,ZHAO Y H,et al.The gain and noise characteristics of double cladding ytterbium-doped fiber amplifiers at different pump modes[J].Laser Technology,2007,31(1):50-53(in Chinese).

Experimental study about all-fiber high-gain pulse fiber amplifiers

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views