Impact of near-end residual reflectivity on the spectral performance of high-power pump lasers

Author

Davis, Monica K. ; Kussmaul, Andreas ; Yang, Guowen ; Hu, Martin H. ; Liu, Xingsheng ; Zhu, Yuqing ; Loeber, David A S ; Zah, Chung-en

Author_Institution

Corning Lasertron, Bedford, MA, USA

Volume

40

Issue

4

fYear

2004

fDate

4/1/2004 12:00:00 AM

Firstpage

354

Lastpage

363

Abstract

Abnormal spectral characteristics are observed in high-power semiconductor pump laser modules with ultralow chip front-facet reflectivity levels. We have identified the root cause as destructive interference in an external-cavity reflection from an antireflection (AR) coated fiber tip. This suppressive external cavity imposes a practical limit on the lower desirable bound for front-facet AR coatings for high-power lasers and uncooled fiber Bragg grating stabilized semiconductor devices.

Keywords

antireflection coatings; laser cavity resonators; laser feedback; optical pumping; reflectivity; semiconductor lasers; abnormal spectral characteristics; antireflection coated fiber tip; destructive interference; external-cavity reflection; front-facet AR coatings; high-power semiconductor pump lasers; near-end residual reflectivity; optical feedback; optical reflection; spectral performance; suppressive external cavity; ultralow chip front-facet reflectivity levels; uncooled fiber Bragg grating stabilized semiconductor devices; Coatings; Fiber lasers; Interference; Laser excitation; Laser stability; Optical fiber devices; Optical reflection; Pump lasers; Reflectivity; Semiconductor lasers;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/JQE.2004.825115

Filename

1278601