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Applied Optics

Applied Optics


  • Editor: James C. Wyant
  • Vol. 47, Iss. 33 — Nov. 20, 2008
  • pp: 6251–6256

Metal-mesh achromatic half-wave plate for use at submillimeter wavelengths

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

Applied Optics, Vol. 47, Issue 33, pp. 6251-6256 (2008)

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A metal-mesh achromatic half-wave plate (HWP) has been designed, manufactured, and tested for potential use in millimeter and submillimeter astronomical instruments. The prototype device presented here is based on a 12-grid Shatrow [ IEEE Trans. Antennas Propag. 43, 109 (1995)] recipe to operate over the frequency range of 120 180 GHz . Transmission line modeling and finite-element analysis [Ansoft HFSS website: http://www.ansoft.com/hfss/ ] were used to optimize the design geometrical parameters in terms of the device transmission, reflection, absorption, phase-shift, and cross-polarization as a function of frequency. The resulting prototype device was constructed and characterized using incoherent radiation from a polarizing Fourier transform spectrometer to explore its frequency and polarization behavior. These measurements are shown to be in excellent agreement with the models. Lists of the achieved HWP performance characteristics are reported.

© 2008 Optical Society of America

OCIS Codes
(120.5410) Instrumentation, measurement, and metrology : Polarimetry
(230.5440) Optical devices : Polarization-selective devices
(260.5430) Physical optics : Polarization
(350.1260) Other areas of optics : Astronomical optics

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: August 22, 2008
Manuscript Accepted: October 13, 2008
Published: November 19, 2008

Giampaolo Pisano, Giorgio Savini, Peter A. R. Ade, and Vic Haynes, "Metal-mesh achromatic half-wave plate for use at submillimeter wavelengths," Appl. Opt. 47, 6251-6256 (2008)

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