Lateral spatial effects of feedback in gain-guided and broad-area semiconductor lasers

Author

Marciante, John R. ; Agrawal, Govind P.

Author_Institution

Inst. of Opt., Rochester Univ., NY, USA

Volume

32

Issue

9

fYear

1996

fDate

9/1/1996 12:00:00 AM

Firstpage

1630

Lastpage

1635

Abstract

Starting from Fresnel diffraction theory, we derive analytic expressions for the lateral spatial dependence of feedback fields for the cases of conventional and phase-conjugate optical feedback. By using numerical simulations we show that for narrow-stripe gain-guided lasers, both types of optical feedback from an external cavity can convert the twin-lobed far fields into a nearly single-lobed far field. We also find that conventional and phase-conjugate feedbacks in broad-area lasers induce a spatial modulation of the lateral field that increases the tendency for filamentation at moderate (-30 dB) feedback levels

Keywords

Fresnel diffraction; laser feedback; laser theory; optical phase conjugation; semiconductor lasers; Fresnel diffraction; broad-area laser; conventional optical feedback; external cavity; far field pattern; filamentation; lateral spatial dependence; narrow-stripe gain-guided laser; numerical simulation; phase-conjugate optical feedback; semiconductor laser; Chaos; Fiber lasers; Laser feedback; Laser modes; Laser theory; Lenses; Optical diffraction; Optical feedback; Optical fibers; Semiconductor lasers;

fLanguage

English

Journal_Title

Quantum Electronics, IEEE Journal of

Publisher

ieee

ISSN

0018-9197

Type

jour

DOI

10.1109/3.535368

Filename

535368