High slope efficiency measured from a composite-resonator vertical-cavity laser

D. M. Grasso, K. D. Choquette, D. K. Serkland, G. M. Peake, K. M. Geib

Research output: Contribution to journalArticlepeer-review


We report high differential slope of the light versus current (L-I) characteristic in excess of 400% external quantum efficiency from a monolithic dual resonator vertical-cavity surface-emitting laser. The additional optical cavity of the composite resonator can provide gain or loss to the distributed laser mode, depending on the bias conditions. We describe the factors contributing to the internal optical loss, and present a qualitative model for the L-I characteristic. With sufficient current injected into the top cavity, the composite-resonator vertical-cavity laser achieves over 6 W/A of differential slope efficiency from threshold to greater than 1 mW of output power, which may be applicable for analog optical data links.

Original languageEnglish (US)
Pages (from-to)1019-1021
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number9
StatePublished - May 1 2006


  • Coupled cavity
  • Optical link
  • Slope efficiency

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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