Effects of 2 MeV Proton Irradiation on Operating Wavelength and Leakage Current of Vertical Cavity Surface Emitting Lasers

Aditya Kalavagunta, Bo Choi, Mark A. Neifeld, Ron Schrimpf

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

We investigate the effect of 2 MeV proton radiation on high-speed oxide-confined vertical cavity surface emitting lasers. Fluences in the range of Φ = 2.5 × 1012 p/cm2 to Φ = 5 × 1014 p/cm2 were studied and laser threshold current was found to degrade linearly with fluence according to a damage factor of K I = 2.77 × 10-15cm2/p. Laser operating wavelength increased with fluence and experienced a maximum Δλ/λ of ∼ 0.71% at Φ = 5×1014 p/cm2. Leakage current also increases as a result of the proton irradiation. We propose a degradation model based on mobility reduction and carrier removal.

Original languageEnglish (US)
Pages (from-to)1982-1990
Number of pages9
JournalIEEE Transactions on Nuclear Science
Volume50
Issue number6 I
DOIs
StatePublished - Dec 1 2003

Keywords

  • Leakage current
  • Proton radiation
  • Vertical cavity lasers
  • Wavelength shift

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Nuclear Energy and Engineering
  • Electrical and Electronic Engineering

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