Cophasing multiple aperture telescopes with Linearized Analytic Phase Diversity (LAPD)

2020/11/21 by Sebastien Vievard, Sébastien Vievard, Aurelie Bonnefois +11
Computer Science · Engineering · Physics and Astronomy · #Adaptive optics and wavefront sensing #Advanced optical system design #FOS: Physical sciences #Instrumentation and Methods for Astrophysics (astro-ph.IM) #Optical measurement and interference techniques #astro-ph.IM

paper · pdf · doi:10.48550/arxiv.2011.10696

Accepted for publication in JATIS

openalex publication_date 2020/11/21 · arxiv created 2020/12/04 · arxiv updated 2020/12/07 · openalex created_date 2020/12/07 · openalex updated_date 2026/07/28

Abstract

Focal plane wavefront sensing is an appealing technique to cophase multiple aperture telescopes. Phase diversity, operable with any aperture configuration or source extension, generally suffers from high computing load. In this Letter, we introduce, characterize and experimentally validate the LAPD algorithm, based on a fast linearized phase diversity algorithm \revwith a capture range comparable to classic phase diversity. We demonstrate that a typical performance of lambda/75 RMS wavefront error can be reached.

Citations

• Historical Development of the Newton–Raphson Method
• The James Webb Space Telescope

Cited by

• He'e-Lab: a modular testbed for astrophotonics and wavefront sensing development

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