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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 45, Iss. 35 — Dec. 10, 2006
  • pp: 8907–8915

Achromatic half-wave plate for submillimeter instruments in cosmic microwave background astronomy: modeling and simulation

Giorgio Savini, Giampaolo Pisano, and Peter A. R. Ade  »View Author Affiliations

Applied Optics, Vol. 45, Issue 35, pp. 8907-8915 (2006)

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We adopted an existing formalism and modified it to simulate, with high precision, the transmission, reflection, and absorption of multiple-plate birefringent devices as a function of frequency. To validate the model, we use it to compare the measured properties of an achromatic five-plate device with a broadband antireflection coating to expectations derived from the material optical constants and its geometric configuration. The half-wave plate presented here is observed to perform well with a phase shift variation of < 2 ° from the ideal 180° over a bandwidth of Δ ν / ν 1 at millimeter wavelengths. This formalism represents a powerful design tool for birefringent polarization modulators and enables its optical properties to be specified with high accuracy.

© 2006 Optical Society of America

OCIS Codes
(120.5410) Instrumentation, measurement, and metrology : Polarimetry
(230.5440) Optical devices : Polarization-selective devices
(260.2130) Physical optics : Ellipsometry and polarimetry
(350.1260) Other areas of optics : Astronomical optics

Original Manuscript: May 8, 2006
Revised Manuscript: July 26, 2006
Manuscript Accepted: August 9, 2006

Giorgio Savini, Giampaolo Pisano, and Peter A. R. Ade, "Achromatic half-wave plate for submillimeter instruments in cosmic microwave background astronomy: modeling and simulation," Appl. Opt. 45, 8907-8915 (2006)

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