High power 2 mm-long cavity 980 nm InGaAs/AlGaAs lasers

Author

Nayar, B.K. ; Lewandowski, J.J. ; Robbins, D.J. ; Robson, F.O. ; Williams, P.J. ; Wilson, F.J.

Author_Institution

GEC Marconi Mater. Technol. Ltd., Towcester, UK

fYear

1999

fDate

28-28 May 1999

Firstpage

41

Lastpage

42

Abstract

Summary form only given. We have recently reported high output power and narrow beam divergence InGaAs/AlGaAs tapered laser array (TLA) devices with a mm-long cavity at 980 nm wavelength for applications in laser surgery, materials processing and fibre laser-pumping. For higher output powers, thermal rollover can be reduced by the use of longer devices, due to lowering of the series resistance and thermal impedance, provided intra-cavity losses are sufficiently low. We report the results on 2 mm-long 200 /spl mu/m broad area and narrow divergence TLA devices.

Keywords

aluminium compounds; gallium arsenide; indium compounds; laser applications in medicine; laser cavity resonators; laser transitions; optical losses; semiconductor laser arrays; surgery; 2 mm; 980 nm; InGaAs-AlGaAs; broad area narrow divergence tapered laser array devices; fibre laser-pumping; high output power; intra-cavity losses; laser surgery; materials processing; narrow beam divergence InGaAs/AlGaAs tapered laser array devices; series resistance; thermal impedance; thermal rollover; wavelength; Fiber lasers; Indium gallium arsenide; Laser beams; Laser surgery; Materials processing; Optical arrays; Optical fiber devices; Power generation; Power lasers; Thermal resistance;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics, 1999. CLEO '99. Summaries of Papers Presented at the Conference on

Conference_Location

Baltimore, MD, USA

Print_ISBN

1-55752-595-1

Type

conf

DOI

10.1109/CLEO.1999.833850

Filename

833850