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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 18 — Jun. 20, 2010
  • pp: 3580–3586

Wavelength-diverse polarization modulators for Stokes polarimetry

Steven Tomczyk, Roberto Casini, Alfred G. de Wijn, and Peter G. Nelson  »View Author Affiliations


Applied Optics, Vol. 49, Issue 18, pp. 3580-3586 (2010)
http://dx.doi.org/10.1364/AO.49.003580


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Abstract

Information about the three-dimensional structure of solar magnetic fields is encoded in the polarized spectra of solar radiation by a host of physical processes. To extract this information, solar spectra must be obtained in a variety of magnetically sensitive spectral lines at high spatial, spectral, and temporal resolution with high precision. The need to observe many different spectral lines drives the development of Stokes polarimeters with a high degree of wavelength diversity. We present a new paradigm for the design of polarization modulators that operate over a wide wavelength range with near-optimal polarimetric efficiency and are directly applicable to the next generation of multiline Stokes polarimeters. These modulators are not achromatic in the usual sense because their polarimetric properties vary with wavelength, but they do so in an optimal way. Thus, we refer to these modulators as polychromatic. We present here the theory behind polychromatic modulators, illustrate the concept with design examples, and present the performance properties of a prototype polychromatic modulator.

© 2010 Optical Society of America

OCIS Codes
(000.2170) General : Equipment and techniques
(120.5410) Instrumentation, measurement, and metrology : Polarimetry
(230.4110) Optical devices : Modulators
(230.5440) Optical devices : Polarization-selective devices
(260.5430) Physical optics : Polarization
(350.1260) Other areas of optics : Astronomical optics

ToC Category:
Polarimetry

History
Original Manuscript: March 29, 2010
Manuscript Accepted: May 5, 2010
Published: June 17, 2010

Citation
Steven Tomczyk, Roberto Casini, Alfred G. de Wijn, and Peter G. Nelson, "Wavelength-diverse polarization modulators for Stokes polarimetry," Appl. Opt. 49, 3580-3586 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-18-3580

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