Reduced optical scattering loss in vertical-cavity lasers using a thin (300 /spl Aring/) oxide aperture

Author

Thibeault, B.J. ; Hegblom, E.R. ; Floyd, P.D. ; Naone, R. ; Akulova, Y. ; Coldren, L.A.

Author_Institution

Dept. of Electr. & Comput. Eng., California Univ., Santa Barbara, CA, USA

Volume

8

Issue

5

fYear

1996

fDate

5/1/1996 12:00:00 AM

Firstpage

593

Lastpage

595

Abstract

Calculations show that significant optical scattering loss persists as standard quarter-wave (800 /spl Aring/) thick, dielectrically apertured vertical cavity laser diameters are reduced below 4 μm and that thinner apertures can reduce the scattering loss, By using a thin (300 /spl Aring/) AlAs-oxide defined aperture, optical scattering loss has been dramatically reduced over the quarter-wave AlAs-oxide defined vertical-cavity laser. The optical loss reduction results in 2.3 μm diameter lasers with differential efficiencies of 0.43 (80% of the value of broad-area lasers) and continuous-wave single-mode powers of 1.2 mW.

Keywords

aluminium compounds; distributed Bragg reflector lasers; laser cavity resonators; light scattering; optical losses; quantum well lasers; 1.2 mW; 2.3 mum; 300 A; AlAs; AlAs-oxide defined aperture, optical scattering loss; continuous-wave single-mode powers; dielectrically apertured vertical cavity laser diameters; differential efficiencies; optical loss reduction; optical scattering loss; quarter-wave AlAs-oxide defined vertical-cavity laser; thinner apertures; Apertures; Dielectric losses; Light scattering; Mirrors; Optical losses; Optical pumping; Optical resonators; Optical scattering; Oxidation; Vertical cavity surface emitting lasers;

fLanguage

English

Journal_Title

Photonics Technology Letters, IEEE

Publisher

ieee

ISSN

1041-1135

Type

jour

DOI

10.1109/68.491549

Filename

491549