物理学报2025，Vol.74Issue(14)：54-61,8.DOI:10.7498/aps.74.20250212
红外超连续辐射泵浦电光晶体产生的太赫兹辐射
Terahertz radiation generated by infrared supercontinuum radiation pumped electro-optic crystal
摘要
Abstract
Femtosecond laser excited terahertz waves have been widely used in various fields.Herein,we demonstrate a novel method to generate terahertz radiation from a terahertz electro-optic crystal excited by infrared supercontinuum radiation(wavelengths＞1 pm),which is produced via the interaction between a femtosecond laser and a transparent solid medium.This approach yields single-cycle,low-frequency,broadband terahertz radiation.In the femtosecond laser-induced ionization process in a medium,both infrared supercontinuum radiation and terahertz radiation are simultaneously generated.When the resulting infrared supercontinuum radiation and terahertz radiation concurrently enter into an electro-optic crystal,the presence of the infrared supercontinuum radiation may interfere with the detection of the intrinsic terahertz radiation.By filtering the infrared supercontinuum radiation with narrowband filters,a new strategy is proposed for investigating the response of the electro-optic crystal in infrared spectral region.关键词
飞秒激光/太赫兹波/超连续辐射/固体介质Key words
femtosecond laser/terahertz wave/supercontinuum radiation/solid medium引用本文复制引用
刘雨熙,周宇龙,邵烁婷,尉鹏飞,梁奇锋,王小同,唐桧波,况龙钰,胡广月..红外超连续辐射泵浦电光晶体产生的太赫兹辐射[J].物理学报,2025,74(14):54-61,8.基金项目
国家自然科学基金(批准号:12175230,11775223,12205298)、中国科学院非共识和颠覆性项目(批准号:CX2140000042)和统筹推进世界一流大学和一流学科建设专项资金(批准号:YD2140002006)资助的课题. Project supported by the National Natural Science Foundation of China(Grant Nos.12175230,11775223,12205298),the Chinese Academy of Sciences Program for Non-Consensus and Disruptive Research(Grant No.CX2140000042),and the"USTC Research Funds of the Double First-Class Initiative"(Grant No.YD2140002006). （批准号:12175230,11775223,12205298）
