Fabrication, packaging, and performance of VCSELs and photodetectors for space applications

R. D. Briggs, M. G. Armendariz, K. M. Geib, K. D. Choquette, D. K. Serkland

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Optocouplers are used for a variety of applications aboard spacecraft including electrical isolation, switching and power transfer. Commercially available light emitting diode (LED)-based optocouplers have experienced severe degradation of light output due to extensive displacement damage occurring in the semiconductor lattice caused by energetic proton bombardment. A new optocoupler has been designed and fabricated which utilizes vertical cavity surface emitting laser (VCSEL) and resonant cavity photodetector (RCPD) technologies for the optocoupler emitter and detector, respectively. Linear arrays of selectively oxidized GaAs/AlGaAs VCSELs and RCPDs, each designed to operate at a wavelength of 850nm, were fabricated using an airbridge contacting scheme. The airbridged contacts were designed to improve packaging yields and device reliability by eliminating the use of a polyimide planarizing layer which provided poor adhesion to the bond pad metallization. Details of the airbridged optocoupler fabrication process are reported. Discrete VCSEL and RCPD devices were characterized at temperatures between -100°C to 100°C. Devices were packaged in a face-to-face configuration to form a single channel optocoupler and its performance was evaluated under conditions of high-energy proton bombardment.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherSociety of Photo-Optical Instrumentation Engineers
Pages40-46
Number of pages7
ISBN (Print)0819430978, 9780819430977
DOIs
StatePublished - 1999
Externally publishedYes
EventProceedings of the 1999 Vertical-Cavity Surface-Emitting Lasers III - San Jose, CA, USA
Duration: Jan 25 1999Jan 26 1999

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume3627
ISSN (Print)0277-786X

Other

OtherProceedings of the 1999 Vertical-Cavity Surface-Emitting Lasers III
CitySan Jose, CA, USA
Period1/25/991/26/99

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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