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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 50, Iss. 21 — Jul. 20, 2011
  • pp: 3750–3757

Polypropylene embedded metal mesh broadband achromatic half-wave plate for millimeter wavelengths

Jin Zhang, Peter A. R. Ade, Philip Mauskopf, Giorgio Savini, Lorenzo Moncelsi, and Nicola Whitehouse  »View Author Affiliations


Applied Optics, Vol. 50, Issue 21, pp. 3750-3757 (2011)
http://dx.doi.org/10.1364/AO.50.003750


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Abstract

We describe a novel multilayered metal-mesh achromatic half-wave plate (HWP) for use in astronomical polarimetric instruments. The HWP is designed to operate across the frequency range from 125 to 250 ‚ÄČ GHz . The wave plate is manufactured from 12 layers of thin film metallic inductive and capacitive grids patterned onto polypropylene sheets, which are then bonded together using a hot-pressing technique. Transmission line modeling and three-dimensional electromagnetic simulations are used to optimize the parameters of the metal-mesh patterns and to evaluate their optical properties. A prototype HWP has been fabricated, and its performance is characterized in a polarizing Fourier transform spectrometer. The device performance is consistent with the modeling, although the measured differential phase shift for two orthogonal polarizations is lower than expected. This difference is likely to result from imperfect patterning of individual layers and misalignment of the grids during manufacture.

© 2011 Optical Society of America

OCIS Codes
(120.5410) Instrumentation, measurement, and metrology : Polarimetry
(230.4110) Optical devices : Modulators
(230.5440) Optical devices : Polarization-selective devices
(350.1260) Other areas of optics : Astronomical optics

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: November 24, 2010
Revised Manuscript: March 18, 2011
Manuscript Accepted: May 16, 2011
Published: July 11, 2011

Citation
Jin Zhang, Peter A. R. Ade, Philip Mauskopf, Giorgio Savini, Lorenzo Moncelsi, and Nicola Whitehouse, "Polypropylene embedded metal mesh broadband achromatic half-wave plate for millimeter wavelengths," Appl. Opt. 50, 3750-3757 (2011)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-50-21-3750

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