Beam steering via resonance detuning in coherently coupled vertical cavity laser arrays

Matthew T. Johnson, Dominic F. Siriani, Meng Peun Tan, Kent D. Choquette

Research output: Contribution to journalArticlepeer-review

Abstract

Coherently coupled vertical-cavity surface-emitting laser arrays offer unique advantages for nonmechanical beam steering applications. We have applied dynamic coupled mode theory to show that the observed temporal phase shift between vertical-cavity surface-emitting array elements is caused by the detuning of their resonant wavelengths. Hence, a complete theoretical connection between the differential current injection into array elements and the beam steering direction has been established. It is found to be a fundamentally unique beam-steering mechanism with distinct advantages in efficiency, compactness, speed, and phase-sensitivity to current.

Original languageEnglish (US)
Article number201115
JournalApplied Physics Letters
Volume103
Issue number20
DOIs
StatePublished - Nov 11 2013

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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