20 October 2004 Opto-thermo-mechanical numerical simulations of three different concepts of infrared achromatic phase shifters
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Abstract
The Darwin/TPF mission aims at detecting directly extra solar planets. It is based on the nulling interferometry, concept proposed by Bracewell in 1978, and developed since 1995 in several European and American laboratories. One of the key optical devices for this technique is the achromatic phase shifter (APS). This optical component is designed to produce a π phase shift over the whole Darwin spectral range (i.e. 6-18 μm), and will be experimentally tested on the NULLTIMATE consortium nulling test bench (Labèque et al). Three different concepts of APS are being simulated: dispersive plates focus crossing and field reversal. In this paper, we show how thermal, mechanical and optical models are merged into a single robust model, allowing a global numerical simulation of the optical component performances. We show how these simulations help us to optimizing the design and present results of the numerical model.
© (2004) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Bruno Chazelas, Bruno Chazelas, Claude Valette, Claude Valette, Thierry Lepine, Thierry Lepine, Marc Barillot, Marc Barillot, Frank Brachet, Frank Brachet, Sebatien Dervaux, Sebatien Dervaux, Francois Fressin, Francois Fressin, Jean Gay, Jean Gay, Gregory Gadret, Gregory Gadret, Alain Labeque, Alain Labeque, Alain Leger, Alain Leger, Ralph Launhardt, Ralph Launhardt, Jacques Mangin, Jacques Mangin, Dimitri Mawet, Dimitri Mawet, Marc Ollivier, Marc Ollivier, Yves Rabbia, Yves Rabbia, Elke Schmidt, Elke Schmidt, } "Opto-thermo-mechanical numerical simulations of three different concepts of infrared achromatic phase shifters", Proc. SPIE 5491, New Frontiers in Stellar Interferometry, (20 October 2004); doi: 10.1117/12.551587; https://doi.org/10.1117/12.551587
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