Four-wave mixing model solutions for polarization control of terahertz pulse generated by a two-color laser field in air

作     者：褚政 刘劲松 王可嘉 姚建铨 

作者机构：Wuhan National Laboratory for OptoelectronicsSchool of Optoelectronic Science and EngineeringHuazhong University of Science and Technology College of Precision Instrument and Opto-Electronics Engineering Tianjin University 

出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)

年 卷 期：2010年第8卷第7期

页      面：697-700页

核心收录：

学科分类：070207[理学-光学] 07[理学] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China (No. 10974063) the Research Foundation of Wuhan National Laboratory (No. P080008) the National "973" Program of China (No. 2007CB310403) 

主　　题：Four wave mixing Numerical analysis Polarization Pulsed laser applications 

摘      要：A four-wave mixing （FWM） model is used to analyze the polarization control of terahertz （THz） pulse generated by a two-color laser field in air. The analytic formula for the THz intensity varying with the THz polarizer angle, and the relative phase between the two pulses, are obtained. The corresponding numerical results agree well with both numerical result obtained from a quantum model and measured data reported. Moreover, possible phenomena are predicted for variables not found in other experiments. Compared with the quantum model, the FWM model gives analytic formulas and clear physical pictures, and has the advantage of efficient computing time.