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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 3 — Jan. 20, 2010
  • pp: 479–483

Mapping speed for an array of corrugated horns

Stephen Padin  »View Author Affiliations


Applied Optics, Vol. 49, Issue 3, pp. 479-483 (2010)
http://dx.doi.org/10.1364/AO.49.000479


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Abstract

I address the choice of horn diameter for millimeter-wave array receivers with corrugated horns. For maximum point-source mapping speed, in both total power and polarization with typical receiver noise contributions and a close-packed horn array that fills the field of view, the optimum horn diameter is 1.6 1.7 F λ , where F is the focal ratio. A ± 25 % change in horn diameter gives < 10 % degradation in mapping speed. Correlated noise from the cold stop, atmosphere, and cosmic microwave background has little effect on the mapping speed and optimum horn diameter.

© 2010 Optical Society of America

OCIS Codes
(040.1240) Detectors : Arrays
(350.1260) Other areas of optics : Astronomical optics
(350.4010) Other areas of optics : Microwaves
(040.2235) Detectors : Far infrared or terahertz

ToC Category:
Detectors

History
Original Manuscript: June 19, 2009
Revised Manuscript: December 3, 2009
Manuscript Accepted: December 21, 2009
Published: January 15, 2010

Citation
Stephen Padin, "Mapping speed for an array of corrugated horns," Appl. Opt. 49, 479-483 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-3-479

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