Coherent emission from integrated Talbot-cavity quantum cascade lasers

被引：24

作者：

Meng, Bo ^{[1
,2
,3
]}

Qiang, Bo ^{[1
,2
,4
,5
]}

Rodriguez, Etienne ^{[1
,2
]}

Hu, Xiao Nan ^{[1
,2
]}

Liang, Guozhen ^{[1
,2
,3
]}

Wang, Qi Jie ^{[1
,2
,4
]}

机构：

[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Ctr OptoElect & Biophoton, Singapore 639798, Singapore

[2] Nanyang Technol Univ, Photon Inst, Singapore 639798, Singapore

[3] CINTRA CNRS NTU THALES, UMI 3288,Res Techno Plaza,50 Nanyang Dr, Singapore 637553, Singapore

[4] Nanyang Technol Univ, Sch Phys & Math Sci, Ctr Disrupt Photon Technol, Singapore 637371, Singapore

[5] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England

来源：

OPTICS EXPRESS | 2017年 / 25卷 / 04期

基金：

新加坡国家研究基金会;

关键词：

SUPERMODE DISCRIMINATION; SEMICONDUCTOR-LASERS; ARRAYS;

D O I：

10.1364/OE.25.003077

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report experimental realization of phase-locked quantum cascade laser (QCL) array using a monolithically integrated Talbot cavity. An array with six laser elements at a wavelength of similar to 4.8 mu m shows a maximum peak power of similar to 4 W which is more than 5 times higher than that of a single ridge laser element and a slope efficiency of 1 W/A at room temperature. Operation of in-phase coherent supermode has been achieved over the whole dynamic range of the Talbot-cavity QCL. The structure was analysed using a straightforward theoretical model, showing quantitatively good agreement with the experimental results. The reduced thermal resistance makes the structure an attractive approach to achieve high beam quality continuous wave QCLs. (C) 2017 Optical Society of America

引用

页码：3077 / 3082

页数：6

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