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Use of subwavelength gratings in TIR incidence as achromatic phase shifters

Mawet, Dimitri and Lenaerts, Cédric and Riaud, Pierre and Surdej, Jean (2005) Use of subwavelength gratings in TIR incidence as achromatic phase shifters. Optics Express, 13 (22). pp. 8686-8692. ISSN 1094-4087. https://resolver.caltech.edu/CaltechAUTHORS:20150520-133648562

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Abstract

Nulling interferometry constitutes a very promising technique in observational astrophysics. This method consists in attenuating the signal of a bright astrophysical object in order to detect much fainter nearby features, e.g. exoplanets around their host star. An on-axis destructive interference is created by adjusting the phases of the beams coming from various telescopes. The huge flux ratio between the parent star and the planet (10^6 in the thermal infrared) requires unprecedented high performance broadband phase shifters. We present a new design for these key components called Achromatic Phase Shifters (APS). We propose to use subwavelength diffractive optical elements under total internal reflection (TIR) incidence. Our component can be seen as an evolution of the Fresnel Rhomb technology.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1364/OPEX.13.008686DOIArticle
ORCID:
AuthorORCID
Mawet, Dimitri0000-0002-8895-4735
Surdej, Jean0000-0002-7005-1976
Additional Information:© 2005 Optical Society of America. Received 23 June 2005; revised 28 July 2005; accepted 25 August 2005. The first and second authors acknowledge the financial support of the Belgian “Fond pour la formation à la Recherche dans l’Industrie et dans l’Agriculture”.
Funders:
Funding AgencyGrant Number
Fond pour la formation à la Recherche dans l’Industrie et dans l’AgricultureUNSPECIFIED
Issue or Number:22
Classification Code:OCIS codes: (120.3180) Interferometry; (050.5080) Phase Shift
Record Number:CaltechAUTHORS:20150520-133648562
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20150520-133648562
Official Citation:Dimitri Mawet, Cédric Lenaerts, Pierre Riaud, Jean Surdej, Serge Habraken, and Denis Vandormael, "Use of subwavelength gratings in TIR incidence as achromatic phase shifters," Opt. Express 13, 8686-8692 (2005)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:57716
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:20 May 2015 21:08
Last Modified:29 Oct 2019 23:43

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