强激光与粒子束2025，Vol.37Issue(8)：12-20,9.DOI:10.11884/HPLPB202537.250065
基于58%DKDP晶体的宽带时间低相干光参量放大研究
Study on broadband low-temporal-coherence optical parametric amplification based on 58%deuterated DKDP crystal
摘要
Abstract
As a new type of laser driver for suppressing laser plasma instability,the low-coherence laser driver holds significant research value in the field of laser inertial confinement fusion.To achieve large-bandwidth and high-power low-coherence pulse parametric amplification,this study provides a detailed analysis of the parametric matching characteristics of DKDP crystals with varying deuteration rates under Type-I collinear phase matching conditions.The fundamental parameters,including phase-matching angles,walk-off angles,and parametric bandwidths,are determined.The theoretical parameter bandwidth of the 58%deuterium-doped DKDP crystal is 180 nm.On this basis,a design for broadband low-temporal-coherence optical parametric amplification based on 58%DKDP crystals is proposed,and the theoretical model and the corresponding numerical model are established by the three-wave coupled equations.Furthermore,an experimental investigation of parametric amplification based on 58%-deuterium-doped DKDP crystals is conducted.The center wavelength of the broadband low-coherence signal light is set at 1053 nm,while the pump wavelength is fixed at 532 nm.The spectral width is 40 nm with a gain factor of 2.1.The results show that 58%DKDP crystal has a large gain bandwidth,and combined with the colinear phase-matching method,such crystals are expected to enable large-bandwidth and high-gain amplification of low-coherence light.关键词
光参量放大/共线相位匹配/宽带时间低相干光/氘化磷酸二氢钾/非线性光学Key words
optical parametric amplification/collinear phase-matching/broadband low-temporal-coherence light/potassium deuterium phosphate crystal/nonlinear optics分类
数理科学引用本文复制引用
许皓,高妍琦,隋展,赵晓晖,王韬,张天雄,贺瑞敬,刘栋,季来林,冯伟,崔勇..基于58%DKDP晶体的宽带时间低相干光参量放大研究[J].强激光与粒子束,2025,37(8):12-20,9.基金项目
国家自然科学基金项目(62275237、12074353) （62275237、12074353）
