ORBi: Mawet Dimitri - Infrared achromatic phase shifters using modulated total internal reflection

Reference : Infrared achromatic phase shifters using modulated total internal reflection


	Document type :	Scientific congresses and symposiums : Paper published in a book
	Discipline(s) :	Physical, chemical, mathematical & earth Sciences : Space science, astronomy & astrophysics
	To cite this reference:	http://hdl.handle.net/2268/31308

Title :	Infrared achromatic phase shifters using modulated total internal reflection
Language :	English
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 - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
	Vandormael, Denis [Ctr. Spatial de Liège (Belgium)]
	Loicq, Jérome [Ctr. Spatial de Liège (Belgium)]
	Verstraeten, David [Ctr. Spatial de Liège (Belgium)]
	Fleury, Karl [Ctr. Spatial de Liège (Belgium)]
	Habraken, Serge [Université de Liège - ULg > Département de physique > Optique - Hololab - CSL (Centre Spatial de Liège) >]
	Surdej, Jean [Université de Liège - ULg > Département d'astrophys., géophysique et océanographie (AGO) > Astroph. extragalactique et observations spatiales (AEOS) >]
Publication date :	1-Jul-2006
Main document 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
Collection and collection volume :	Society of Photo-Optical Instrumentation Engineers (SPIE) Conference Series 6268
Pages :	79-89
On invitation :	Yes
Audience :	International
ISBN :	9780819463333
City :	Dordrecht, Boston
Country :	USA
Event name :	Advances in Stellar Interferometry - SPIE Conference 6268
Event date :	24 - 31 Mai 2006
Event organizer :	SPIE (Society of Photo-Optical Instrumentation Engineers)
Event place (city) :	Orlando
Event country :	USA
Keywords :	[en] 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.
Target :	Researchers ; Professionals
Permalink :	http://hdl.handle.net/2268/31308
DOI :	10.1117/12.671572
Other URL :	http://adsabs.harvard.edu/abs/2006SPIE.6268E..79M

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