| 纳秒光脉冲在光子晶体光纤中产生的超连续谱 |
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| 引用本文： | 房鸿,马瑞龙,韦会峰.纳秒光脉冲在光子晶体光纤中产生的超连续谱[J].西安工业大学学报,2012,32(12):975-979. |
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| 作者姓名： | 房鸿 马瑞龙 韦会峰 |
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| 作者单位： | 西安工业大学理学院,西安,710021 |
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| 摘 要： | 研究了纳秒脉冲在光子晶体光纤中的演化和传输.利用纳秒激光器产生脉宽为65ns、重复频率为150 kHz光脉冲,泵浦25 m的光子晶体光纤,获得了输出功率为0.76W、整个光谱范围超过1200 nm的超连续谱.在光谱展宽的初始阶段,光谱的展宽来源于调制不稳定性效应.随着泵浦功率的增加,发现四波混频效应对光谱短波部分的展宽起作用,受激拉曼散射效应对光谱长波部分的展宽起作用.
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| 关 键 词： | 超连续谱 光子晶体光纤 调制不稳定性效应 四波混频 受激拉曼散射 |
Super-continuum Generation by Nanosecond Pulse Pumping in a Photonic Crystal Fiber |
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| Authors: | FANG Hong MA Rui-long WEI Hui-feng |
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| Affiliation: | FANG Hong, MA Rui - long, WEI Hui - feng ( 1. School of Science, Xi ＇an Technological University, Xi＇ an 710021, China; 2. Shenzhen Key Laboratory of Laser Engineering, Shenzhen University, Shenzhen 518060, China; 3. Yangtze Optical Fibre and Cable Company, Ltd. Wuhan 430073 ,China) |
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| Abstract: | The transmission and evolvement of nano-second laser pulse in photonic crystal fiber are investigated. A 25 m PCF is pumped by 65 ns and 150 kHz optical pulses from nanosecond laser, super-continuum with spectral width of beyond 1200 nm and average output power of 750 mW is obtained. In the initial stage, the SC generation is originated from modulation instability effect. With increasing pump power, the SC extends to the long wavelengths due to the stimulated Raman scattering, but to the short wavelengths due to the four wave mixing. |
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| Keywords: | super-continuum photonic crystal fiber modulation instability four wave mixing stimulated Raman scattering |
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