Investigation on phase matching in a THz-wave parametric oscillator  

作　　者：李忠洋 邴丕彬 徐德刚 钟凯 姚建铨 

机构地区：[1]North China University of Water Resources and Electric Power [2]Institute of Laser and Optoelectronics,College of Precision Instrument and Optoelectronics Engineering,Tianjin University

出　　处：《Optoelectronics Letters》2012年第1期29-32,共4页光电子快报（英文版）

基　　金：supported by the National Basic Research Program of China(No.2007CB310403)

摘　　要：The characteristics of noncollinear phase matching and quasi-phase-matching in the THz-wave parametric oscillator(TPO) are investigated.The expression of the effective parametric gain length under the condition of noncollinear phase matching configuration is deduced.The relationship between the poling period of periodically poled LiNbO3 crystal and the generated THz frequency under the condition of quasi-phase-matching configuration is analyzed.Based on the analyses above we propose a new TPO configuration which ensures the three mixing waves interact collinearly.The effects of operation temperature on phase matching are analyzed.The characteristics of noncollinear phase matching and quasi-phase-matching in the THz-wave parametric oscillator （TPO） are investigated. The expression of the effective parametric gain length under the condition ofnoncollinear phase matching configuration is deduced. The relationship between the poling period of periodically poled LiNbO3 crystal and the gener- ated THz frequency under the condition of quasi-phase-matching configuration is analyzed. Based on the analyses above we propose a new TPO configuration which ensures the three mixing waves interact collinearly. The effects of operation temperature on phase matching are analyzed.

关 键 词：相匹配 周期性极化铌酸锂晶体 波参数 太赫兹 准相位匹配 配置参数 参量振荡器 THZ波 

分 类 号：TN752[电子电信—电路与系统]