Fast beam steering with an optical phased array

David R. Gozzard, Lyle E. Roberts, James T. Spollard, Paul G. Sibley, Daniel A. Shaddock

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

Optical phased arrays (OPAs) are devices that use the coherence of light to control the interference pattern in the far field, which enables them to steer a laser beam with no moving parts. As such, OPAs have potential applications in laser communications, target acquisition and tracking, metrology, and directed energy. In this Letter, we present a control architecture for an actively phase-locked OPA, capable of steering a laser beam at speeds limited by the actuation bandwidth of electro-optic modulators. The system achieved an output phase stability of λ/770 and steering speeds up to 1 MHz. The digital control architecture can be extended to GHz steering speeds, is readily scalable to hundreds of emitters, and is compatible with high-power arrays.

Original languageEnglish
Pages (from-to)3793-3796
Number of pages4
JournalOptics Letters
Volume45
Issue number13
DOIs
Publication statusPublished - 1 Jul 2020
Externally publishedYes

Fingerprint

Dive into the research topics of 'Fast beam steering with an optical phased array'. Together they form a unique fingerprint.

Cite this