Generating optical supercontinuum and frequency comb in tenuous plasmas

作     者：Kenan Qu Nathaniel J.Fisch 

作者机构：Department of Astrophysical SciencesPrinceton UniversityPrincetonNew Jersey 08544USA 

出 版 物：《Matter and Radiation at Extremes》 (极端条件下的物质与辐射（英文）)

年 卷 期：2021年第6卷第5期

页      面：13-22页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

基　　金：supported by NNSA Grant No.DE-NA0002948 

主　　题：optical spectra scattering 

摘      要：There are several mechanisms by which the frequency spectrum of a laser broadens when it propagates at near-relativistic intensity in a tenuous *** on one-dimensional effects,we identify two strong optical nonlinearities,namely,four-wave mixing(FWM)and forward Raman scattering(FRS),for creating octave-wide *** dominates the interaction when the laser pulse is short and intense,and its combination with phase modulation produces a symmetrically broadened *** dominates when the laser pulse is long and relatively weak,and it broadens the laser spectrum mainly toward lower frequencies and produces a frequency *** frequency chirping combined with group velocity dispersion compresses the laser pulse,causing higher peak intensity.