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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Anthony J. Campillo
  • Vol. 30, Iss. 23 — Dec. 1, 2005
  • pp: 3183–3185

Linear-to-circular polarization transformation upon optical tunneling through an embedded low-index film

R. M. A. Azzam and Cristina L. Spinu  »View Author Affiliations


Optics Letters, Vol. 30, Issue 23, pp. 3183-3185 (2005)
http://dx.doi.org/10.1364/OL.30.003183


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Abstract

Quarter-wave retardation can be achieved in optical tunneling through a low-index thin film that is surrounded by a medium of higher refractive index, for any index ratio N>2.414, over a range of incidence angles that is determined by N. A novel frustrated-total-internal-reflection circular polarization beam splitter (CPBS) is proposed that uses an adjustable air gap between two Ge prisms. This tunable CPBS operates over a broad (2-12 µm) IR spectral range by controlling the air-gap thickness to match one-tenth of the wavelength of light by use of a piezoelectric transducer.

© 2005 Optical Society of America

OCIS Codes
(230.5440) Optical devices : Polarization-selective devices
(240.0310) Optics at surfaces : Thin films
(240.7040) Optics at surfaces : Tunneling
(260.5430) Physical optics : Polarization

ToC Category:
Optical Devices

Citation
R. M. A. Azzam and Cristina L. Spinu, "Linear-to-circular polarization transformation upon optical tunneling through an embedded low-index film," Opt. Lett. 30, 3183-3185 (2005)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-30-23-3183

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