Optical in-well pumping of a vertical-external-cavity surface-emitting laser

Marc Schmid, Sarah Benchabane, Firuz Torabi-Goudarzi, Richard Abram, Allister I. Ferguson, Erling Riis

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Abstract

A scheme is demonstrated for optical pumping of a vertical-external-cavity surface-emitting laser. The scheme is based on absorption of the pump light within the wells of the multiple-quantum-well gain structure rather than the conventional approach of absorption of a shorter wavelength in the barrier regions. The operation of a laser around 850 nm pumped by an 808 nm source demonstrates the potential of this technique for allowing operation at a significantly shorter range of wavelengths for these devices in general and specific application of high-brightness pump lasers for devices in this spectral region. A further advantage is the smaller quantum defect which results in reduced heating of the gain medium. These advantages are achieved while maintaining a slope efficiency of up to 18%, which is comparable to results obtained with a traditional pumping scheme with a similar gain medium.
Original languageEnglish
Pages (from-to)4860-4862
Number of pages2
JournalApplied Physics Letters
Volume84
Issue number24
DOIs
Publication statusPublished - 14 Jun 2004

Keywords

  • optics
  • lasers
  • quantum physics
  • pumping scheme
  • photonics

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