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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 46, Iss. 20 — Jul. 10, 2007
  • pp: 4181–4196

Design of transmission-type phase holograms for a compact radar-cross-section measurement range at 650 GHz

Eero Noponen, Aleksi Tamminen, and Matti Vaaja  »View Author Affiliations


Applied Optics, Vol. 46, Issue 20, pp. 4181-4196 (2007)
http://dx.doi.org/10.1364/AO.46.004181


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Abstract

A design formalism is presented for transmission-type phase holograms for use in a submillimeter-wave compact radar-cross-section (RCS) measurement range. The design method is based on rigorous electromagnetic grating theory combined with conventional hologram synthesis. Hologram structures consisting of a curved groove pattern on a 320   mm × 280   mm Teflon plate are designed to transform an incoming spherical wave at 650   GHz into an output wave generating a 100   mm diameter planar field region (quiet zone) at a distance of 1   m . The reconstructed quiet-zone field is evaluated by a numerical simulation method. The uniformity of the quiet-zone field is further improved by reoptimizing the goal field. Measurement results are given for a test hologram fabricated on Teflon.

© 2007 Optical Society of America

OCIS Codes
(050.1940) Diffraction and gratings : Diffraction
(090.1760) Holography : Computer holography
(350.4010) Other areas of optics : Microwaves

ToC Category:
Holography

History
Original Manuscript: October 31, 2006
Revised Manuscript: March 13, 2007
Manuscript Accepted: March 22, 2007
Published: June 20, 2007

Citation
Eero Noponen, Aleksi Tamminen, and Matti Vaaja, "Design of transmission-type phase holograms for a compact radar-cross-section measurement range at 650 GHz," Appl. Opt. 46, 4181-4196 (2007)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-46-20-4181


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