Proposal for Efficient Terahertz-Wave Difference Frequency Generation in an AlGaAs Photonic Crystal Waveguide

被引：12

作者：

Chen, Tao ^{[1
,2
]}

Sun, Junqiang ^{[1
]}

Li, Linsen ^{[1
]}

Tang, Jianguan ^{[3
]}

机构：

[1] Huazhong Univ Sci & Technol, Sch Optoelect Sci & Engn, Wuhan Natl Lab Optoelect, Wuhan 430074, Peoples R China

[2] Hubei Normal Univ, Sch Phys & Elect Sci, Huangshi 435002, Peoples R China

[3] Wuhan Univ Technol, Natl Engn Lab Fiber Opt Sensing Technol, Wuhan 430070, Peoples R China

来源：

JOURNAL OF LIGHTWAVE TECHNOLOGY | 2012年 / 30卷 / 13期

关键词：

Difference frequency generation (DFG); photonic crystal waveguides (PCWs); semiconductors; terahertz wave; SLOW-LIGHT; 3RD-HARMONIC GENERATION; DESIGN; EMISSION; SILICON;

D O I：

10.1109/JLT.2012.2192908

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We design an AlGaAs-based terahertz photonic crystal waveguide (PCW) to achieve terahertz-wave difference frequency generation (DFG) from near-infrared light sources. The PCW structure provides a tight confinement of terahertz-wave field, resulting in a good mode field overlap of three waves. The unique phase matching condition between two pump waves and terahertz Bloch wave can be satisfied through choosing appropriate waveguide parameters and pump wavelengths. With the coupled-mode equations derived from modal theory for describing the light propagation, we simulate the continuous terahertz DFG process, and a high power-normalized conversion efficiency of 0.7632 x 10(-4) W-1 for 3 THz generation is obtained.

引用

页码：2156 / 2162

页数：7

共 42 条

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