A Terahertz Wavemeter Based on a Fabry-Perot Interferometer Composed of Two Identical Ge Etalons

作     者：MIAO Liang ZUO Du-Luo CHENG Zu-Hai 苗亮;左都罗;程祖海

作者机构：Wuhan National Laboratory for OptoelectronicsSchool of Optoelectronic Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074 

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

年 卷 期：2012年第29卷第5期

页      面：67-69页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080401[工学-精密仪器及机械] 0804[工学-仪器科学与技术] 0803[工学-光学工程] 

基　　金：Supported by Creative Foundation of Wuhan National Laboratory for Optoelectronics(No Z080007) 

主　　题：interferometer pumped wave 

摘      要：A simple and convenient terahertz wavemeter based on a Fabry-Perot interferometer (FPI) is *** interferometer is composed of two identical Ge etalons,which act as high-reflectance mirrors for terahertz *** transmission characteristics of the Ge FPI are analyzed using multiple-beam interference *** theoretical finesse of the FPI,defined as a ratio of 2π to the phase halfwidth of the transmission fringes,is larger than ***,the wavemeter is used to measure the wavelengths of an optically pumped NH3 terahertz *** experimental results indicate that the measuring uncertainties are within ±1%.Higher accuracy can be expected if the power or pulse energy of the terahertz source is more stable.