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Infrared achromatic phase shifters using modulated total internal reflection
Mawet, Dimitri; Lenaerts, Cédric; Riaud, Pierre et al.
2006In Monnier, John D; Schöller, Markus; Danchi, William C (Eds.) Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series "Advances in Stellar Interferometry" - SPIE Conference 6268
Peer reviewed
 

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Keywords :
INTERFEROMETRY
Abstract :
[en] 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.
Disciplines :
Space science, astronomy & astrophysics
Author, co-author :
Mawet, Dimitri ;  Institut d'Astrophysique et de Géophysique de Liège, Univ. de Liège (Belgium)
Lenaerts, Cédric;  HOLOLAB, Univ. de Liège (Belgium)
Riaud, Pierre ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Vandormael, Denis;  Ctr. Spatial de Liège (Belgium)
Loicq, Jerôme ;  Ctr. Spatial de Liège (Belgium)
Verstraeten, David;  Ctr. Spatial de Liège (Belgium)
Fleury, Karl;  Ctr. Spatial de Liège (Belgium)
Habraken, Serge ;  Université de Liège - ULiège > Département de physique > Optique - Hololab - CSL (Centre Spatial de Liège)
Surdej, Jean  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS)
Language :
English
Title :
Infrared achromatic phase shifters using modulated total internal reflection
Publication date :
01 July 2006
Event name :
Advances in Stellar Interferometry - SPIE Conference 6268
Event organizer :
SPIE (Society of Photo-Optical Instrumentation Engineers)
Event place :
Orlando, United States
Event date :
24 - 31 Mai 2006
By request :
Yes
Audience :
International
Main work title :
Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series "Advances in Stellar Interferometry" - SPIE Conference 6268
Editor :
Monnier, John D
Schöller, Markus
Danchi, William C
Publisher :
Kluwer Academic Publisher, Dordrecht, Boston, United States
ISBN/EAN :
9780819463333
Collection name :
Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 6268
Pages :
79-89
Peer reviewed :
Peer reviewed
Available on ORBi :
since 03 December 2009

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