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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Alan E. Willner
  • Vol. 34, Iss. 3 — Feb. 1, 2009
  • pp: 371–373

Total internal reflection without change of polarization using a right-angle prism with half-wavelength-thick optical interference coating

R. M.A. Azzam  »View Author Affiliations


Optics Letters, Vol. 34, Issue 3, pp. 371-373 (2009)
http://dx.doi.org/10.1364/OL.34.000371


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Abstract

Monochromatic light, which is polarized in an arbitrary state, is totally internally reflected at angle of incidence ϕ = 45 ° without change of polarization by a right-angle prism of refractive index n 0 = 1 + 1 2 = 1.70711 (e.g., N-LAK8 Schott glass at wavelength λ = 706 nm ), which is coated with a transparent thin film of refractive index n 1 = ( 1 + 1 2 ) 1 2 = 1.30656 (e.g., vacuum-deposited fluoride material) and of metric thickness equal to half of the vacuum wavelength of incident light, d = λ 2 . The ambient medium of evanescent refraction is assumed to be vacuum, air, or an inert gas. Wavelength shifts of ± 50 nm , or changes of the internal angle of incidence of ± 1 ° around 45°, cause phase errors of only a few degrees. The reflected and incident polarization states are nearly identical in the presence of such small phase errors.

© 2009 Optical Society of America

OCIS Codes
(160.4760) Materials : Optical properties
(230.5480) Optical devices : Prisms
(260.3160) Physical optics : Interference
(260.5430) Physical optics : Polarization
(310.0310) Thin films : Thin films

ToC Category:
Physical Optics

History
Original Manuscript: October 6, 2008
Revised Manuscript: December 15, 2008
Manuscript Accepted: January 5, 2009
Published: January 30, 2009

Citation
R. M. A. Azzam, "Total internal reflection without change of polarization using a right-angle prism with half-wavelength-thick optical interference coating," Opt. Lett. 34, 371-373 (2009)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-34-3-371

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