Tapered Terahertz Quantum Cascade Lasers

被引：0

作者：

Chu, Weidong ^{[1
]}

Li, Yanfang ^{[1
]}

Liu, Junqi ^{[2
]}

Liu, Fengqi ^{[2
]}

Duan, Suqing ^{[1
]}

机构：

[1] Inst Appl Phys & Computat Math, POB 8009 28, Beijing 100088, Peoples R China

[2] Chinese Acad Sci, Inst Semicond, Key Lab Semicond Mat Sci, Beijing 100083, Peoples R China

来源：

2013 38TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES (IRMMW-THZ) | 2013年

关键词：

D O I：

暂无

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：

Terahertz quantum cascade lasers with tapered waveguide structure are reported. It is found there is an optimized tapered angle with which the peak output power of the devices with same total length reaches the maximum. The far-field divergence of the laser beam depends on the tapered angle as well as the driven current. The existence of the optimized tapered angle and the current-dependent far-field pattern may be attributed to the self-focusing effect in the devices.

引用

页数：2

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