Collinear phase-matching study of terahertz-wave generation via difference frequency mixed in GaAs and Inp |
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| Authors: | Lei Huang Bo Sun Jian-quan Yao and Peng Wang |
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| Affiliation: | Institute of Laser and Optoelectronics, College of Precision Instrument and Optoelectronics Engineering, Key Laboratoryof Optoelectronics Information Science and Technology, Ministry of Education, Tianjin University, Tianjin 300072, China |
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| Abstract: | The collinearly phase-matching condition of terahertz-wave generation via difference frequency mixed in GaAs and InP is theoretically studied.In collinear phase-matching,the optimum phase-matching wave bands of these two crystals are calculated.The optimum phase-matching wave bands in GaAs and InP are 0.95～1.38 μm and 0.7～0.96 μm respectively.The influence of the wavelength choice of the pump wave on the coherent length in THz-wave tuning is also discussed.The influence of the temperature alteration on the phase-matching and the temperature tuning properties in GaAs crystal are calculated and analyzed.It can serve for the following experiments as a theoretical evidence and a reference aswell. |
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| Keywords: | GaAs mixed difference frequency generation serve experiments theoretical evidence reference temperature tuning alteration properties crystals influence choice pump coherent length optimum wave |
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