High performance GaAs/AlGaAs vertical-cavity surface-emitting lasers designed for cryogenic applications

Author

Lu, BO ; Luo, Wen-Lin ; Cheng, Julian ; Schneider, R.P. ; Kilcoyne, S.P. ; Lear, K.L. ; Zolper, J.C.

Author_Institution

Center for High Technol. Mater., New Mexico Univ., Albuquerque, NM, USA

fYear

1995

fDate

21-24 May 1995

Firstpage

949

Lastpage

951

Abstract

The slope efficiency (η_s) and the output power (P _out) of proton-implant-isolated AlGaAs/GaAs vertical-cavity surface-emitting lasers (VCSELs) improve dramatically as the temperature is decreased, with η_s>90% at 77 K, compared to η _s≈20% at room temperature. This suggests that the VCSEL can be a very efficient device for cryogenic applications. In this paper we report the first VCSEL that has been optimized for operation near 77 K, with characteristics that are superior to those of VCSELs operating at room temperature, including high output power (P_out=22 mW), high power conversion efficiency (η_d=32%), high slope efficiency (η_s=75%-95%), low threshold voltage (V _th=1.75 V) and current (I_th=2 mA), and low power dissipation (P_d<10 mW for P_out=2.5 mW) for a 20 μm diameter device

Keywords

III-V semiconductors; aluminium compounds; cryogenic electronics; gallium arsenide; laser cavity resonators; semiconductor lasers; surface emitting lasers; 1.75 V; 2 mA; 20 micron; 22 mW; 32 percent; 75 to 95 percent; 77 K; AlGaAs-GaAs; VCSEL; cryogenic applications; high power conversion efficiency; low power dissipation; low threshold voltage; output power; proton-implant-isolated device; slope efficiency; surface-emitting lasers; vertical-cavity SEL; Cryogenics; Gallium arsenide; Power conversion; Power generation; Power lasers; Surface emitting lasers; Temperature; Threshold voltage; Time of arrival estimation; Vertical cavity surface emitting lasers;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronic Components and Technology Conference, 1995. Proceedings., 45th

Conference_Location

Las Vegas, NV

Print_ISBN

0-7803-2736-5

Type

conf

DOI

10.1109/ECTC.1995.517804

Filename

517804