Kitayama K, Kato Y, Seikai S, Tateda M
Appl Opt. 1981 Jul 15;20(14):2428-32. doi: 10.1364/AO.20.002428.
A fiber Raman laser generating a subnanosecond pulse in the extremely broad spectral region between 0.6 and 1.8 microm has been developed using an ultra-low-loss single-mode fiber as the generating medium, pumped by a high-power mode-locked and Q-switched Nd:YAG laser at lambda = 1.06 microm. The fiber length dependence of the Raman emission is investigated by varying the generating fiber length from several meters to ~1 km. As a result, pulses with 3-dB widths <0.4 nsec are obtained in the 1.0-1.7-microm spectral region by using an ~200-m long generating fiber with a pump peak power of 0.4 kW. Timing jitter occurring in the displayed pulse train on an oscilloscope is reduced to +/-0.02 nsec with the newly constructed delay system.
一种光纤拉曼激光器已被研制出来，它使用超低损耗单模光纤作为产生介质，在0.6至1.8微米的极宽光谱区域内产生亚纳秒脉冲，由波长为1.06微米的高功率锁模和调Q Nd:YAG激光器泵浦。通过将产生光纤的长度从几米变化到约1公里，研究了拉曼发射的光纤长度依赖性。结果，通过使用泵浦峰值功率为0.4千瓦、长度约为200米的产生光纤，在1.0 - 1.7微米光谱区域内获得了3分贝宽度小于0.4纳秒的脉冲。利用新构建的延迟系统，示波器上显示的脉冲序列中出现的定时抖动减小到±0.02纳秒。
