27 July 2016 High order dark wavefront sensing simulations
Author Affiliations +
Abstract
Dark wavefront sensing takes shape following quantum mechanics concepts in which one is able to “see” an object in one path of a two-arm interferometer using an as low as desired amount of light actually “hitting” the occulting object. A theoretical way to achieve such a goal, but in the realm of wavefront sensing, is represented by a combination of two unequal beams interferometer sharing the same incoming light, and whose difference in path length is continuously adjusted in order to show different signals for different signs of the incoming perturbation. Furthermore, in order to obtain this in white light, the path difference should be properly adjusted vs the wavelength used. While we incidentally describe how this could be achieved in a true optomechanical setup, we focus our attention to the simulation of a hypothetical “perfect” dark wavefront sensor of this kind in which white light compensation is accomplished in a perfect manner and the gain is selectable in a numerical fashion. Although this would represent a sort of idealized dark wavefront sensor that would probably be hard to match in the real glass and metal, it would also give a firm indication of the maximum achievable gain or, in other words, of the prize for achieving such device. Details of how the simulation code works and first numerical results are outlined along with the perspective for an in-depth analysis of the performances and its extension to more realistic situations, including various sources of additional noise.
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Roberto Ragazzoni, Carmelo Arcidiacono, Jacopo Farinato, Valentina Viotto, Maria Bergomi, Marco Dima, Demetrio Magrin, Luca Marafatto, Davide Greggio, Elena Carolo, Daniele Vassallo, "High order dark wavefront sensing simulations", Proc. SPIE 9909, Adaptive Optics Systems V, 99096A (27 July 2016); doi: 10.1117/12.2232613; https://doi.org/10.1117/12.2232613
PROCEEDINGS
9 PAGES


SHARE
Back to Top