Scalability of small-aperture selectively oxidized vertical cavity lasers

Kent D. Choquette, W. W. Chow, G. R. Hadley, H. Q. Hou, K. M. Geib

Research output: Contribution to journalArticlepeer-review


We analyze the threshold properties of small area selectively oxidized vertical cavity lasers. Agreement for threshold gain versus laser size is found using the experimental intrinsic threshold voltage matched with a gain theory, as compared to a two-dimensional optical cavity simulation. Our analysis indicates the increasing threshold current density of small area lasers arises from both increasing threshold gain and the concomitant increasing leakage current. We further show that the optical loss can be reduced for lasers with areas as small as 0.25 μm2 while maintaining sufficient transverse optical confinement by displacing the apertures longitudinally away from the cavity and reducing the oxide thickness.

Original languageEnglish (US)
Pages (from-to)823-825
Number of pages3
JournalApplied Physics Letters
Issue number7
StatePublished - Feb 17 1997
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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