强激光与粒子束2025，Vol.37Issue(6)：28-34,7.DOI:10.11884/HPLPB202537.240407
超宽带简并光参量放大中的寄生效应
Parasitic effects in ultra-broadband degenerate optical parametric amplification
摘要
Abstract
This paper conducts a detailed study on the influence of second-harmonic parasitic effects in non-collinear ultra-broadband degenerate optical parametric amplification(OPA),which is pumped by frequency-doubled Ti:sapphire lasers.We considered both walk-off compensation and non-walk-off compensation scenarios.The study reveals that,under the non-walk-off compensation method,by appropriately increasing the non-collinear angle between the pump and signal beams,the impact of second-harmonic parasitic effects on the signal's output spectrum can be effectively reduced while ensuring broad-spectrum amplification of the signal.The evolution of the signal's output spectrum and output flux is investigated for different pump spectral bandwidths,clarifying the requirements for the pump spectral bandwidth given a specific signal output spectral bandwidth.The research findings provide design guidelines for generating ultra-broadband,high-temporal contrast femtosecond seed based on degenerate OPA.关键词
超宽带简并光参量放大/二次谐波/寄生效应/走离补偿Key words
ultra-broadband degenerate optical parametric amplification/second-harmonic/parasitic effect/walk-off compensation分类
数理科学引用本文复制引用
李纲,杨雷,黄征,谢娜,卢峰,蒋东镔,周凯南..超宽带简并光参量放大中的寄生效应[J].强激光与粒子束,2025,37(6):28-34,7.基金项目
国家重点研发计划项目(2022YFB3606305) （2022YFB3606305）
