摘要
声光互作用器件声光可编程色散滤波器(AOPDF)是一种实时的色散补偿器件,它可用于飞秒啁啾脉冲放大系统。通过耦合模理论推导,得到了输出脉冲的群延迟与调制声波的频率、啁啾、带宽等参数的关系,并且对用2.5cm长的LiNbO3作为声光晶体的AOPDF补偿飞秒光脉冲的色散进行了数值模拟,得到了对中心波长为800mm的钛宝石飞秒激光色散补偿特性及所需声波的频率和啁啾参数。
Acousto-optic programmable filters (AOPDF) can compensate in real time for group-delay dispersion. This feature can be used in femtosecond chirped-pulse amplification to compensate dispersion adaptively. An analytical expression relating the group delay at the output of the AOPDF to the input acoustic signal was obtained with coupled-wave theory in the case of collinear bulk acousto-optic interactions. Numerical simulations in the LiNbO3 crystal are shown to support the principle of arbitrary group-delay control with an AOPDF.
出处
《强激光与粒子束》
EI
CAS
CSCD
北大核心
2004年第10期1229-1232,共4页
High Power Laser and Particle Beams
基金
国家重点基础研究项目资助课题(G1999075201)