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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 32, Iss. 18 — Jun. 20, 1993
  • pp: 3220–3232

Spatial optical beam steering with an AlGaAs integrated phased array

F. Vasey, F. K. Reinhart, R. Houdré, and J. M. Stauffer  »View Author Affiliations


Applied Optics, Vol. 32, Issue 18, pp. 3220-3232 (1993)
http://dx.doi.org/10.1364/AO.32.003220


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Abstract

A passive spatial light beam deflector based on a channel waveguide phased-array concept is presented. Diffraction gratings patterned by electron-beam lithography couple light into and out of the device. Phasing is achieved electro-optically with indium tin oxide/AlGaAs Shottky junctions. Discrete beam steering is first demonstrated with a 43-element rib waveguide array at an 850-nm wavelength. A sawtooth electrode keeps the device length short and the electrode surface small. Continuous deflection over a ±7.2 mrad range at a 900-nm wavelength is then reported. A set of seven sawtooth and offset electrodes permits addressing any point within this range. The beam has a width of 1.5 mrad, and the maximum modulation voltage is −8.5 V.

© 1993 Optical Society of America

History
Original Manuscript: January 3, 1992
Published: June 20, 1993

Citation
F. Vasey, F. K. Reinhart, R. Houdré, and J. M. Stauffer, "Spatial optical beam steering with an AlGaAs integrated phased array," Appl. Opt. 32, 3220-3232 (1993)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-32-18-3220

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