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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 4 — Feb. 13, 2012
  • pp: 4681–4689

High efficiency half-wave retardation in diffracted light by coupled waves

Kalle Ventola, Jani Tervo, Samuli Siitonen, Hemmo Tuovinen, and Markku Kuittinen  »View Author Affiliations


Optics Express, Vol. 20, Issue 4, pp. 4681-4689 (2012)
http://dx.doi.org/10.1364/OE.20.004681


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Abstract

We demonstrate high-efficiency half-wave retardation in diffracted light in the 2nd order Littrow mounting. The diffracting structure is a slanted crossed grating with subwavelength period in the direction of the second grating vector, which makes it possible to mix the polarization states of the input light inside the grating layer, and hence to create the half-wave retardation. We present an experimental result with 58.9 % diffraction efficiency and a near perfect half-wave retardation. We explain the effect qualitatively using the classical coupled-wave approach.

© 2012 OSA

OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(050.1960) Diffraction and gratings : Diffraction theory
(260.5430) Physical optics : Polarization
(050.2065) Diffraction and gratings : Effective medium theory
(050.6624) Diffraction and gratings : Subwavelength structures
(050.6875) Diffraction and gratings : Three-dimensional fabrication

ToC Category:
Diffraction and Gratings

History
Original Manuscript: December 21, 2011
Revised Manuscript: January 20, 2012
Manuscript Accepted: January 20, 2012
Published: February 9, 2012

Citation
Kalle Ventola, Jani Tervo, Samuli Siitonen, Hemmo Tuovinen, and Markku Kuittinen, "High efficiency half-wave retardation in diffracted light by coupled waves," Opt. Express 20, 4681-4689 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-4-4681


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References

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