Relative phase tuning of coupled defects in photonic crystal vertical-cavity surface-emitting lasers

Ann C. Lehman, James J. Raftery, Aaron J. Danner, Paul O. Leisher, Kent D. Choquette

Research output: Contribution to journalArticlepeer-review

Abstract

Evanescent coupling can be achieved by patterning the top facet of a vertical-cavity surface-emitting laser (VCSEL) with a multiple defect photonic crystal pattern. We show that for 2×1 coupled defect arrays, the phase between these emission sites changes as the current is varied. The phase variation is manifest in the far field pattern and may be determined using antenna array theory. It is found that the phase varies 81 deg between transversely coupled cavities as the current to the VCSEL is varied by 24 mA. This corresponds to a far field angular change of approximately 1.5 deg.

Original languageEnglish (US)
Article number021102
Pages (from-to)1-2
Number of pages2
JournalApplied Physics Letters
Volume88
Issue number2
DOIs
StatePublished - 2006

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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