| LI Zhong-yang,WANG Meng-tao,WANG Si-lei,YUAN Bin,XU De-gang,YAO Jian-quan.Theoretical analysis of stimulated polariton scattering from the A1-symmetry modes of KNbO3 crystal[J].Optoelectronics Letters,2017,13(5):339-343 |
| Theoretical analysis of stimulated polariton scattering from the A1-symmetry modes of KNbO3 crystal |
| Author Name | Affiliation | | LI Zhong-yang | College of Electric Power, North China University of Water Resources and Electric Power, Zhengzhou 450045, China | | WANG Meng-tao | College of Electric Power, North China University of Water Resources and Electric Power, Zhengzhou 450045, China | | WANG Si-lei | College of Electric Power, North China University of Water Resources and Electric Power, Zhengzhou 450045, China | | YUAN Bin | College of Electric Power, North China University of Water Resources and Electric Power, Zhengzhou 450045, China | | XU De-gang | College of Precision Instrument and Opto-electronics Engineering, Institute of Laser and Optoelectronics, Tianjin University, Tianjin 300072, China | | YAO Jian-quan | College of Precision Instrument and Opto-electronics Engineering, Institute of Laser and Optoelectronics, Tianjin University, Tianjin 300072, China |
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| Abstract: |
| Stimulated polariton scattering (SPS) based on noncollinear phase matching scheme from the A1-symmetry modes of KNbO3 crystal is investigated for generating terahertz (THz) wave. Frequency tuning characteristics of THz wave by varying the phase matching angle and pump wavelength are analyzed. The expression of the effective parametric gain length under the noncollinear phase matching condition is deduced. Parametric gain and absorption characteristics of THz wave in KNbO3 are theoretically simulated. The characteristics of KNbO3 for parametric oscillator (TPO) are compared with those of MgO:LiNbO3. The analysis results indicate that KNbO3 is an excellent optical crystal for TPO to enhance the output of THz wave. |
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