Theoretical analysis of difference frequency generation for terahertz generation in a sheet microcavity from the CO2 laser

被引：3

作者：

Zeng, Shijia ^{[1
]}

Xie, Fangsen ^{[1
]}

Rao, Zhiming ^{[1
]}

机构：

[1] Jiangxi Normal Univ, Coll Phys & Commun Elect, 99 Ziyang Rd, Nanchang 330022, Jiangxi, Peoples R China

来源：

OPTIK | 2018年 / 172卷

基金：

中国国家自然科学基金;

关键词：

Terahertz generation; Difference frequency generation; Cavity phase matching; Nonlinear optics; OPTICAL PARAMETRIC OSCILLATOR; 2ND-HARMONIC GENERATION;

D O I：

10.1016/j.ijleo.2018.07.130

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A scheme for efficient terahertz generation in a GaAs sheet microcavity from the CO2 laser is presented, in which the process of difference frequency generation that considered cavity phase matching is derived theoretically. This model achieves its optimum working condition when the cavity length corresponds to a coherent length and the resonant condition of pump wave is satisfied. The results show that the efficiency can realize an effective improvement when the CO2 lasers pump wavelengths are 9.55 mu m and 9.79 mu m, respectively, with a peak power conversion efficiency of 2.04%, which corresponds to a photon conversion efficiency of 83%. This work is expected to provide a theoretical basis for relevant experiments involving doubly and even triply resonant structures.

引用

页码：1111 / 1116

页数：6

共 19 条

[1] INTERACTIONS BETWEEN LIGHT WAVES IN A NONLINEAR DIELECTRIC [J].