Four-wave mixing model solutions for polarization control of terahertz pulse generated by a two-color laser field in air |
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| Authors: | Zheng Chu Jinsong Liu Kejia Wang and Jianquan Yao |
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| Institution: | [1]Wuhan National Laboratory for Optoelectronics, School of Optoelectronic Science and Engineering, Huazhong University of Science and Technology, Wuhan 430074, China [2]College of Precision Instrument and Opto-Electronics Engineering, Tianjin University, Tianjin 300072, China |
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| Abstract: | 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. |
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