High-power single-mode vertical-cavity surface-emitting lasers

N. Samal, Shane Johnson, D. Ding, A. K. Samal, S. Q. Yu, Yong-Hang Zhang

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

This letter reports a design for high-power single-mode operation in vertical-cavity surface-emitting lasers by means of modal gain control using two different sized current apertures to shape the injection-current profile. A smaller current aperture is located several mirror-pairs away from the active region in the p -mirror and a larger current aperture is located in the first n -mirror-pair next to the active region. Both theoretical modeling and experimental test results show substantial improvement in the optical mode behavior using this approach when compared to a traditional single-aperture design. A clear trend of the spectral purity in the modal behavior under continuous wave and pulsed conditions is demonstrated and is in good agreement with theoretical predictions. The best design tested demonstrated a room-temperature continuous wave power output of 7.5 mW with a side mode suppression ratio of 20 dB.

Original languageEnglish (US)
Article number161108
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Volume87
Issue number16
DOIs
StatePublished - Oct 17 2005

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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