Terahertz Generation Based on Cascaded Difference Frequency Generation with Periodically-poled KTiOPO4

被引：3
|
作者：
Li, Zhongyang [1 ]
Wang, Silei [1 ]
Wang, Mengtao [1 ]
Wang, Weishu [1 ]
机构：
[1] North China Univ Water Resources & Elect Power, 36 Bei Huan Rd, Zhengzhou 450045, Henan, Peoples R China
来源：
CURRENT OPTICS AND PHOTONICS | 2017年 / 1卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Terahertz wave; Cascaded difference frequency generation; KTiOPO4; STIMULATED POLARITON SCATTERING; WAVE GENERATION;
D O I：
10.3807/COPP.2017.1.2.138
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Terahertz (THz) generation by periodically-poled KTiOPO4 (PPKTP) with a quasi-phase-matching scheme based on cascaded difference frequency generation (DFG) processes is theoretically analyzed. The cascaded Stokes interaction processes and the cascaded anti-Stokes interaction processes are investigated from coupled wave equations. THz intensities and quantum conversion efficiency are calculated. Compared with non-cascaded DFG processes, THz intensities from 10-order cascaded DFG processes are increased to 5.53. The quantum conversion efficiency of 479.4% in cascaded processes, which exceeds the Manley-Rowe limit, can be realized.
引用
收藏
页码：138 / 142
页数：5
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