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Infrared Achromatic Phase Shifters using Modulated Total Internal Reflection

Mawet, Dimitri and Lenaerts, Cédric and Riaud, Pierre and Vandormael, Denis and Loicq, Jérome and Verstraeten, David and Fleury, Karl and Habraken, Serge and Surdej, Jean (2006) Infrared Achromatic Phase Shifters using Modulated Total Internal Reflection. In: Advances in Stellar Interferometry. Proceedings of SPIE. No.6268. Society of Photo-Optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 62682J. ISBN 9780819463333.

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We propose a new family of achromatic phase shifters that uses the modulated total internal reflection (TIR) phenomenon. These components can be seen as enhanced Fresnel rhombs for infrared applications like nulling interferometry and polarimetry. The TIR phenomenon comes with a differential phase shift between the polarization components of the incident light. Modulating the index transition at the TIR interface allows compensating for the intrinsic material dispersion in order to make the subsequent phase shift achromatic over broad bands. The modulation can be induced by a thin film of a well-chosen medium or a subwavelength grating whose parameters are specially optimized. We present results from theoretical simulations together with preliminary fabrication outcomes.

Item Type:Book Section
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URLURL TypeDescription
Mawet, Dimitri0000-0002-8895-4735
Surdej, Jean0000-0002-7005-1976
Additional Information:© 2006 Society of Photo-Optical Instrumentation Engineers (SPIE). June 28, 2006. The first author acknowledges the financial support of the Belgian “Fonds pour la formation à la Recherche dans l’Industrie et dans l’Agriculture”. The authors also acknowledge the financial support of ESA.
Funding AgencyGrant Number
Fonds pour la Formation à la Recherche dans l’índustrie et dans l’Ágriculture (FRIA-Belgium)UNSPECIFIED
European Space Agency (ESA)UNSPECIFIED
Subject Keywords:Nulling interferometry, Achromatic Phase Shifters, total internal reflection, thin films, subwavelength gratings
Series Name:Proceedings of SPIE
Issue or Number:6268
Record Number:CaltechAUTHORS:20150527-091322264
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Official Citation:Dimitri Mawet ; Cédric Lenaerts ; Pierre Riaud ; Denis Vandormael ; Jérome Loicq, et al. "Infrared achromatic phase shifters using modulated total internal reflection", Proc. SPIE 6268, Advances in Stellar Interferometry, 62682J (June 28, 2006); doi:10.1117/12.671572
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:57847
Deposited By: Ruth Sustaita
Deposited On:27 May 2015 17:35
Last Modified:10 Nov 2021 21:56

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