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Proceedings Article

Optical phased array antennas for free space laser communications

[+] Author Affiliations
Walter R. Leeb, Wolfgang M. Neubert, Klaus H. Kudielka, Arpad L. Scholtz

Technische Univ. Wien (Austria)

Proc. SPIE 2210, Space Optics 1994: Space Instrumentation and Spacecraft Optics, 14 (September 30, 1994); doi:10.1117/12.188133
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From Conference Volume 2210

  • Space Optics 1994: Space Instrumentation and Spacecraft Optics
  • Thierry M. Dewandre; Joachim J. Schulte-in-den-Baeumen; Emmanuel Sein
  • Garmisch, Federal Republic of Germany | April 17, 1994

abstract

The principle of phased array microwave antennas can be applied at optical frequencies. The far-field antenna pattern is found by spatial Fourier transform of the optical field distribution across the subaperture plane. Inertia-free antenna pattern steering can be accomplished by proper phasing of the subaperture waves. A tolerance analysis shows that the required accuracy of phase relationship and subantenna alignment can be obtained in practice when implementing control loops. We develop schemes for both transmit and receive array antennas. Experiments carried out at (lambda) equals 1.06 micrometers demonstrated both modes of operation. Optical array antennas may be applied advantageously for fine pointing in intersatellite data links and in space lidar systems.

© (1994) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.
Citation

Walter R. Leeb ; Wolfgang M. Neubert ; Klaus H. Kudielka and Arpad L. Scholtz
"Optical phased array antennas for free space laser communications", Proc. SPIE 2210, Space Optics 1994: Space Instrumentation and Spacecraft Optics, 14 (September 30, 1994); doi:10.1117/12.188133; http://dx.doi.org/10.1117/12.188133


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