Describing spatiotemporal couplings in ultrashort pulses using coupling coefficients  

作　　者：曾曙光 但有全 张彬 孙年春 隋展 

机构地区：[1]College of Electronics Information,Sichuan University [2]College of Science,China Three Gorges University [3]Laser Fusion Research Centre of China Academy of Engineering Physics

出　　处：《Chinese Physics B》2011年第11期301-305,共5页中国物理B（英文版）

基　　金：supported by the Program for New Century Excellent Talents in University(NCET),China(Grant No.NCET-05-0784)

摘　　要：Three coupling coefficients are defined to describe spatiotemporal coupling in ultrashort pulses. With these coupling coefficients, the first-order spatiotemporal couplings of Gaussian pulse and beam are described analytically. Also, the first-order and the second-order spatiotemporal couplings caused by angular dispersion elements are studied using these coupling coefficients. It can be shown that these coupling coefficients are dimensionless and normalized, and readily indicate the severity of spatiotemporal coupling.Three coupling coefficients are defined to describe spatiotemporal coupling in ultrashort pulses. With these coupling coefficients, the first-order spatiotemporal couplings of Gaussian pulse and beam are described analytically. Also, the first-order and the second-order spatiotemporal couplings caused by angular dispersion elements are studied using these coupling coefficients. It can be shown that these coupling coefficients are dimensionless and normalized, and readily indicate the severity of spatiotemporal coupling.

关 键 词：spatiotemporal coupling ultrashort pulse angular dispersion spatial chirp 

分 类 号：O437[机械工程—光学工程]