Optical properties of tapered laser cavities

Author

Sujecki, S. ; Wykes, J. ; Sewell, P. ; Vukovic, A. ; Benson, T.M. ; Larkins, E.C. ; Borruel, L. ; Esquivias, I.

Author_Institution

Sch. of Electr. & Electron. Eng., Univ. of Nottingham, UK

Volume

150

Issue

3

fYear

2003

fDate

6/17/2003 12:00:00 AM

Firstpage

246

Lastpage

252

Abstract

The properties of a tapered semiconductor laser cavity, which can be used to generate a high-brightness optical beam, are studied. The cavity consists of a narrow straight waveguide section and a tapered power amplifier section. The influence of the input waveguide width and length, as well as of the length and taper angle of the power amplifier section, on the overall performance of the cavity are discussed. Finally, the application of beam spoilers is studied. In order to solve the wave equation, the wide-angle-beam propagation method incorporating a higher-order finite-difference scheme is applied.

Keywords

finite difference methods; laser cavity resonators; optical design techniques; semiconductor lasers; wave equations; waveguide lasers; beam spoilers; high-brightness optical beam; higher-order finite-difference scheme; input waveguide width; narrow straight waveguide section; optical properties; overall cavity performance; power amplifier section length; power amplifier section taper angle; tapered power amplifier section; tapered semiconductor laser cavity; wave equation; wide-angle-beam propagation method;

fLanguage

English

Journal_Title

Optoelectronics, IEE Proceedings -

Publisher

iet

ISSN

1350-2433

Type

jour

DOI

10.1049/ip-opt:20030387

Filename

1214751