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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 41, Iss. 1 — Jan. 1, 2002
  • pp: 235–238

Symmetrically coated pellicle beam splitters for dual quarter-wave retardation in reflection and transmission

Rasheed M. A. Azzam and Fadi A. Mahmoud  »View Author Affiliations


Applied Optics, Vol. 41, Issue 1, pp. 235-238 (2002)
http://dx.doi.org/10.1364/AO.41.000235


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Abstract

A trilayer pellicle that consists of a high-index center layer that is symmetrically coated on both sides by a low-index film can be designed to produce differential reflection and transmission phase shifts of ±90° at oblique incidence and equal throughput for the p and the s polarizations. Such a device splits a beam of incident linearly polarized light into two orthogonal circularly polarized components that travel in well-separated angular directions. Examples of infrared dual quarter-wave retarders that use a symmetrically coated Ge pellicle at 77° angle of incidence are presented. A 50–50% splitter requires a symmetric pellicle with at least five layers. Error analysis shows that the thicknesses of the high-index layers must be tightly controlled. These circular polarization beam splitters are intended for operation with a well-collimated light source and can be used as the basis of a novel circular polarization Michelson interferometer.

© 2002 Optical Society of America

OCIS Codes
(120.2130) Instrumentation, measurement, and metrology : Ellipsometry and polarimetry
(230.5440) Optical devices : Polarization-selective devices
(260.5430) Physical optics : Polarization

History
Original Manuscript: May 21, 2001
Published: January 1, 2002

Citation
Rasheed M. A. Azzam and Fadi A. Mahmoud, "Symmetrically coated pellicle beam splitters for dual quarter-wave retardation in reflection and transmission," Appl. Opt. 41, 235-238 (2002)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-41-1-235

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