Chen Xiaowei, Li Xiaofang, Liu Jun, Wei Pengfei, Ge Xiaochun, Li Ruxin, Xu Zhizhan
State Key Laboratory of High Field Laser Physics, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai 201800, China.
Opt Lett. 2007 Aug 15;32(16):2402-4. doi: 10.1364/ol.32.002402.
Two-cycle optical pulses with duration of 5 fs and energy of 0.7 mJ have been generated at 1 kHz by compressing the 38 fs laser pulses from a carrier-envelope phase (CEP) controlled Ti:sapphire laser system through a cascade filamentation compression technique. A simple and effective method is developed to suppress multiple filament formation and stabilize a single filament by inserting a soft aperture with an appropriate diameter into the driving laser beam prior to focusing, resulting in an excellent compressed beam quality. The good beam quality and potentially higher peak power make this ultrashort laser pulse source a significant tool for high-field physics applications.
通过级联丝状压缩技术压缩来自载波包络相位（CEP）控制的钛宝石激光系统的38飞秒激光脉冲，已在1千赫兹频率下产生了持续时间为5飞秒、能量为0.7毫焦的双周期光脉冲。开发了一种简单有效的方法来抑制多丝形成并通过在聚焦前将具有适当直径的软孔径插入驱动激光束中来稳定单丝，从而产生优异的压缩光束质量。良好的光束质量和潜在的更高峰值功率使这种超短激光脉冲源成为高场物理应用的重要工具。
