Time-Resolved Terahertz Spectroscopy with Free-Space Electro-Optic Sampling

作     者：张亮亮 赵国忠 钟华 胡颖 张存林 

作者机构：LDepartmentofPhysicsCapitalNormalUniversityBeijing100037 RensselaerPolytechnicInstituteNewYorkUSA 

出 版 物：《Chinese Physics Letters》 (中国物理快报（英文版）)

年 卷 期：2004年第21卷第11期

页      面：2295-2297页

核心收录：

学科分类：070207[理学-光学] 07[理学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：国家自然科学基金 国家863计划 

主　　题：Terahertz spectroscopy 

摘      要：We present a time-resolved ultrafast measurement in terahertz (THz) frequency region by means of the free-space electro-optic sampling. The fast delay scan technique is used to suppress the noise with low frequency and to improve the signal-to-noise ratio of the system. The transmission spectra of different materials are obtained. The optical properties of these materials in a THz region are shown. The broadening of spectrum and chirping phenomena are illustrated. We find that polystyrene is an excellent material for the THz application.