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자료유형
학술저널
저자정보
Lian Tan (North China University of Water Resources and Electric Power) Bin Yuan (North China University of Water Resources and Electric Power) Yongjun Li (North China University of Water Resources and Electric Power) Silei Wang (North China University of Water Resources and Electric Power) Hongtao Zhang (North China University of Water Resources and Electric Power) Pibin Bing (North China University of Water Resources and Electric Power) Jianquan Yao (Tianjin University) Zhongyang Li (North China University of Water Resources and Electric Power)
저널정보
한국광학회 Current Optics and Photonics Current Optics and Photonics Vol.3 No.4
발행연도
2019.8
수록면
342 - 349 (8page)

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We present a theoretical research concerning terahertz (THz) wave generation with KTiOPO₄ (KTP) by collinear phase matching (CPM) stimulated polariton scattering (SPS). Both CPM and corresponding nonzero nonlinear coefficients can be simultaneously realized with s→f+f in yz plane, s→f+s with θ < Ω in xz plane and s→f+f with θ > Ω in xz plane. The effective nonlinear coefficients including electronic nonlinearities and ionic nonlinearities are calculated. Based on the parameter values of refractive indices, absorption coefficients and effective nonlinear coefficients, we simulate THz wave intensities generated with CPM SPS by solving coupled wave equations and give the relationship among the maximum THz wave intensity, optimal crystal length and the angle θ. The calculation results demonstrate that CPM SPS with KTP can generate THz waves with high intensities and quantum conversion efficiencies.

목차

I. INTRODUCTION
II. ABSORPTION COEFFICIENTS OF THz WAVES
III. PHASE-MATCHING CHARACTERISTICS
IV. NONLINEAR OPTICAL COEFFICIENTS
V. INTENSITIES OF THz WAVES
VI. CONCLUSION
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