Chin. Phys. Lett.  2011, Vol. 28 Issue (7): 074201    DOI: 10.1088/0256-307X/28/7/074201
FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
An All-Fiber Gas Raman Light Source Based on a Hydrogen-Filled Hollow-Core Photonic Crystal Fiber Pumped with a Q-Switched Fiber Laser
CHEN Xiao-Dong1, 2, MAO Qing-He1**, SUN Qing1, ZHAO Jia-Sheng1, LI Pan1, FENG Su-Juan1
1 Anhui Provincial Key Lab of Photonics Devices and Materials, Anhui Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Hefei 230031
2 State Key Laboratory of Pulsed Power Laser Technology, Optoelectronics Department, Electronic Engineering Institute, Hefei 230037
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CHEN Xiao-Dong, MAO Qing-He, SUN Qing et al  2011 Chin. Phys. Lett. 28 074201
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Abstract A gas Raman light source based on a H2−filled hollow-core photonic-crystal-fiber cell with a Q-switched fiber laser followed by a fiber amplifier as the Raman pump source is demonstrated. The Stokes frequency-shift lasing line is observed at 1135.7 nm with the Q-switched pump pulses at 1064.7 nm. Our experimental results show that the generated Stokes pulse is much narrower than the pump pulse, and the generated Stokes pulse duration is increased with the single pulse energy for the same duration pump pulses. For the 125 ns pump pulses with a repetition rate of 5 kHz, the Raman threshold pump energy and the conversion efficiency at the Raman threshold are 2.13 µJ and 9.82%. Moreover, by choosing narrower pump pulses, the Raman threshold pump energy may be reduced and the conversion efficiency may be improved.
Keywords: 42.65.Dr      42.55.Wd     
Received: 27 March 2011      Published: 29 June 2011
PACS:  42.65.Dr (Stimulated Raman scattering; CARS)  
  42.55.Wd (Fiber lasers)  
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https://cpl.iphy.ac.cn/10.1088/0256-307X/28/7/074201       OR      https://cpl.iphy.ac.cn/Y2011/V28/I7/074201
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CHEN Xiao-Dong
MAO Qing-He
SUN Qing
ZHAO Jia-Sheng
LI Pan
FENG Su-Juan
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