A theoretical analysis of optical-to-THz conversion efficiency via optical rectification
A theoretical analysis of optical-to-THz conversion efficiency via optical rectification作者机构:Terahertz Institute of Shandong University of Science & Technology Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Terahertz research center Physical Electronics College University of Electronics Science
出 版 物:《Science China(Technological Sciences)》 (中国科学(技术科学英文版))
年 卷 期:2008年第51卷第12期
页 面:2080-2088页
核心收录:
学科分类:0810[工学-信息与通信工程] 070207[理学-光学] 07[理学] 08[工学] 0805[工学-材料科学与工程(可授工学、理学学位)] 0803[工学-光学工程] 0702[理学-物理学] 0812[工学-计算机科学与技术(可授工学、理学学位)]
主 题:optical rectification periodically inverted effective length conversion efficiency
摘 要:A theoretical analysis of an ultra-short pulse converted to Terahertz radiation via optical rectification in nonlinear optical crystal is presented here;several factors that affect optical-to-THz conversion efficiencies are discussed;pulse durations affect the conversion efficiency effectively:when crystal length is equal to the optimal crystal length lc,optical-to-THz conversion efficiency is the highest,but for the periodically-inverted electro-optic crystals,conversion efficiency is almost proportional to the crystal length when absorption can be *** account of the absorption of crystals,effective length of crystal is Leff=0.63/α,there is no apparent increase of conversion efficiency and the conversion efficiency approaches to a constant eventually when the crystal length is increased.