InGaAs angled-grating distributed Bragg reflector lasers integrated with grating outcoupler for collimation

Author

Uemukai, Masahiro ; Kunoh, Yasumitsu ; Shimada, Naoyuki ; Suhara, Toshiaki

Author_Institution

Dept. of Electron. Eng., Osaka Univ., Japan

Volume

9

Issue

5

fYear

2003

Firstpage

1191

Lastpage

1195

Abstract

An angled-grating distributed Bragg reflector (DBR) laser integrated with a grating outcoupler (GO) is proposed and demonstrated. It consists of an angled broad-area gain stripe surrounded by angled DBR (α-DBR) gratings parallel to the gain stripe and two DBR gratings for feedback at the stripe ends, and a GO for emitting a collimated output beam. Due to distributed Bragg reflection in the α-DBR gratings, filamentation can be suppressed. Single-mode lasing up to 69 mW peak power was obtained under pulse condition. A collimated output beam with divergence angles, close to the diffraction limit, was obtained. These results confirm the effectiveness of the α-DBR gratings.

Keywords

Bragg gratings; III-V semiconductors; distributed Bragg reflector lasers; gallium arsenide; high-speed optical techniques; indium compounds; integrated optics; laser beams; laser modes; light diffraction; optical couplers; quantum well lasers; ternary semiconductors; Grating outcoupler; InGaAs; angled DBR gratings; angled broad-area gain stripe; angled-grating distributed Bragg reflector lasers; collimated output beam; collimation; diffraction limit; distributed Bragg reflection; divergence angles; feedback; filamentation; integrated optics; pulse condition; quantum well lasers; single-mode lasing; Bragg gratings; Collimators; Diffraction; Distributed Bragg reflectors; Distributed feedback devices; Indium gallium arsenide; Laser beams; Laser feedback; Optical reflection; Output feedback;

fLanguage

English

Journal_Title

Selected Topics in Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

1077-260X

Type

jour

DOI

10.1109/JSTQE.2003.819517

Filename

1263950