Article (Scientific journals)
Design, manufacturing, and performance analysis of mid-infrared achromatic half-wave plates with diamond subwavelength gratings
Delacroix, Christian; Forsberg, Pontus; Karlsson, Mikael et al.
2012In Applied Optics, 51, p. 5897
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Abstract :
[en] In this paper, we present an elegant 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 optized design, we manufactured a diamond HWP for the 11-13.2 µm region, with an estimated mean retardance ~3.143 ± 0.061 rad (180.08 ± 3.51°). In addition, an antireflective grating was etched on the backside of the wave plate, allowing a total tansmittance between 89 and 95% over the band.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Delacroix, Christian  ;  Université de Liège - ULiège > Département de physique > Optique - Hololab
Forsberg, Pontus
Karlsson, Mikael
Mawet, Dimitri
Absil, Olivier  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Hanot, Charles
Surdej, Jean  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Habraken, Serge ;  Université de Liège - ULiège > Département de physique > Optique - Hololab
Language :
English
Title :
Design, manufacturing, and performance analysis of mid-infrared achromatic half-wave plates with diamond subwavelength gratings
Publication date :
01 August 2012
Journal title :
Applied Optics
ISSN :
1559-128X
eISSN :
2155-3165
Publisher :
Optical Society of America, Washington, United States - District of Columbia
Volume :
51
Pages :
5897
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
VORTEX
Available on ORBi :
since 03 October 2012

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