中国激光, 2010, 37 (12): 2993, 网络出版: 2014-03-12   

用于宽调谐太赫兹探测的菲涅耳相位匹配和频特性分析

Study on Characteristics Analysis of Sum Frequency Generation with Fresnel Phase Matching Used for Wide Tunable Terahertz Detection
作者单位
1 长春理工大学高功率半导体激光国家重点实验室, 吉林 长春 130022
2 天津大学激光与光电子研究所, 天津 300072
摘要
论述了用于宽调谐太赫兹(THz)探测的菲涅耳准相位匹配技术方法的原理,讨论了共振及非共振菲涅耳相位匹配的条件,重点研究了Goos Hanchen延迟对菲涅耳准相位匹配的影响,还讨论了和频过程中有效非线性系数、光波在晶体内全反射角θ的允许宽度及GaAs晶体对互作用三波的吸收,提出了利用角度调谐在菲涅耳相位匹配GaAs晶体中实现宽调谐THz探测的实验设计方案。
Abstract
The principle of Fresnel quasi-phase matching technology used to wide tuning terahertz wave detection is analyzed. We discuss the resonant and non-resonant Fresnel phase matching condition and the effect of Goos Hanchen delay to Fresnel phase matching. The effective nonlinear efficiency during sum frequency generation, the accept angle width of internal total reflective angle inside of the crystal and the absorption of GaAs crystal for three interaction waves also are investigated in more detail. Finally, in order to achieve wide tunable terahertz detection, we present an experiment scheme and experimental setup with Fresnel phase matching by angle tuning.
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崔海霞, 姚建铨, 王卓, 万春明. 用于宽调谐太赫兹探测的菲涅耳相位匹配和频特性分析[J]. 中国激光, 2010, 37(12): 2993. Cui Haixia, Yao Jianquan, Wang Zhuo, Wan Chunming. Study on Characteristics Analysis of Sum Frequency Generation with Fresnel Phase Matching Used for Wide Tunable Terahertz Detection[J]. Chinese Journal of Lasers, 2010, 37(12): 2993.

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