Achromatic Phase Shifters: The "Mirror" Approaches

Details Achromatic Phase Shifters: The "Mirror" Approaches Achromatic Phase Shifters: The "Mirror" Approaches

Mar 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003esasp.522e..14r&link_type=abstract

Proceedings of GENIE - DARWIN Workshop - Hunting for Planets (ESA SP-522). 3-6 June 2002. Leiden, The Netherlands. Editor: H. La

Computer Science

Scientific paper

This paper is intended to complement the preceeding one "Review of Concepts and Constraints for Achromatic Phase Shifters" (to which, now and on, we assign the label "paper I" and reference [1]) and is dedicated to the phase shifters concepts using mostly or exclusively mirrors. Here achromaticity is intrinsically obtained. The phase shift process results from the properties of reflection. The case of total reflection (Fresnel's rhomb and twisted rhombs) is eventually not considered here, since the process involves a travel of light within a material. Thus, the present topic is restricted to two concepts : the "electric field vector reversal" and the "focus crossing". This restriction traces the fact that the various problems associated with the use of materials for the infrared are then eliminated. In section 1 we recall briefly the main features of each concept, in section 2 and 3 we consider each concept respectively. State-of-the-art is briefly recalled in section 4 and a discussion is outlined in section 5.

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