Near-field spectroscopic characterization of a 10 μm aperture selectively oxidized vertical cavity surface emitting laser

Aditi Sharma, Jan M. Yarrison-Rice, Howard E. Jackson, K. D. Choquette

Research output: Contribution to journalArticlepeer-review

Abstract

A 10μm square aperture selectively oxidized 850 nm vertical cavity surface emitting laser (VCSEL) was characterized by employing a near-field scanning optical microscope coupled to a spectrometer. The spatial distribution of various lasing modes was investigated with different wavelengths, both in the near field and far field, by analyzing a series of spectra as a function of position over the VCSEL emitting surface. The inhomogeneous gain distribution with localized regions of higher gain was found through two dimensional scan of the near-field total integrated intensity. It was also found that the VCSELs exhibit a rich transverse mode structure which can be classified as Hermite-Gaussian type.

Original languageEnglish (US)
Pages (from-to)6837-6844
Number of pages8
JournalJournal of Applied Physics
Volume92
Issue number11
DOIs
StatePublished - Dec 1 2002

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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