DFB lasers with apodized surface gratings for wavelength stabilization and high efficiency

被引：12

作者：

Fricke, J. ^{[1
]}

Decker, J. ^{[1
]}

Maassdorf, A. ^{[1
]}

Wenzel, H. ^{[1
]}

Erbert, G. ^{[1
]}

Knigge, A. ^{[1
]}

Crump, P. ^{[1
]}

机构：

[1] Leibniz Inst Hochstfrequenztech, Ferdinand Braun Inst, Gustav Kirchhoff Str 4, D-12489 Berlin, Germany

来源：

SEMICONDUCTOR SCIENCE AND TECHNOLOGY | 2017年 / 32卷 / 07期

关键词：

laser diode; Bragg grating; DFB laser; wavelength stabilization; WIDTH; WAVE;

D O I：

10.1088/1361-6641/aa715c

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 present results of GaAs-based distributed-feedback (DFB) broad-area (BA) lasers with integrated surface-etched gratings. Lasers with longitudinally varying (apodized) Bragg gratings are compared to lasers with uniform gratings. DFB-BA lasers with apodized gratings show improved conversion efficiency and output power compared to those with uniform gratings. DFB-BA lasers with narrow contact stripe width W = 30 mu m and resonator length L = 6 mm show a peak conversion efficiency of 60% and maintain efficiency > 50% to an output power of > 6W. The spectral FWHM linewidth is below 0.5 nm. Furthermore DFB lasers with implemented apodized gratings are less sensitive to fabrication tolerances.

引用

页数：6

共 17 条

[1] SINGLE-MODE OPERATION OF A SURFACE GRATING DISTRIBUTED-FEEDBACK GAAS-ALGAAS LASER WITH VARIABLE-WIDTH WAVE-GUIDE [J].