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Design, manufacturing, and performance analysis of mid-infrared achromatic half-wave plates with diamond subwavelength gratings |
Applied Optics, Vol. 51, Issue 24, pp. 5897-5902 (2012)
http://dx.doi.org/10.1364/AO.51.005897
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Abstract
In this paper, we present a solution for creating robust monolithic achromatic half-wave plates (HWPs) for the infrared, based on the form birefringence of subwavelength gratings (SWGs) made out of diamond. We use the rigorous coupled wave analysis to design the gratings. Our analysis shows that diamond, besides its outstanding physical and mechanical properties, is a suitable substrate to manufacture mid-infrared HWPs, thanks to its high refractive index, which allows etching SWGs with lower aspect ratio. Based on our optimized design, we manufactured a diamond HWP for the 11–13.2 μm region, with an estimated mean retardance
© 2012 Optical Society of America
OCIS Codes
(050.1950) Diffraction and gratings : Diffraction gratings
(050.5080) Diffraction and gratings : Phase shift
(050.6624) Diffraction and gratings : Subwavelength structures
ToC Category:
Diffraction and Gratings
History
Original Manuscript: May 3, 2012
Revised Manuscript: July 10, 2012
Manuscript Accepted: July 10, 2012
Published: August 16, 2012
Citation
Christian Delacroix, Pontus Forsberg, Mikael Karlsson, Dimitri Mawet, Olivier Absil, Charles Hanot, Jean Surdej, and Serge Habraken, "Design, manufacturing, and performance analysis of mid-infrared achromatic half-wave plates with diamond subwavelength gratings," Appl. Opt. 51, 5897-5902 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-24-5897
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