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Title: Wavefront control for the Gemini Planet Imager

Abstract

The wavefront control strategy for the proposed Gemini Planet Imager, an extreme adaptive optics coronagraph for planet detection, is presented. Two key parts of this strategy are experimentally verified in a testbed at the Laboratory for Adaptive Optics, which features a 32 x 32 MEMS device. Detailed analytic models and algorithms for Shack-Hartmann wavefront sensor alignment and calibration are presented. It is demonstrated that with these procedures, the spatially filtered WFS and the Fourier Transform reconstructor can be used to flatten to the MEMS to 1 nm RMS in the controllable band. Performance is further improved using the technique of modifying the reference slopes using a measurement of the static wavefront error in the science leg.

Authors:
; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
897974
Report Number(s):
UCRL-CONF-220694
Journal ID: ISSN 0277-786X; TRN: US200706%%164
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Journal Volume: 6272; Conference: Presented at: Advances in Adaptive Optics II, Orlando, FL, United States, May 24 - May 31, 2006
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; ALGORITHMS; ALIGNMENT; CALIBRATION; DETECTION; OPTICS; PERFORMANCE; PLANETS

Citation Formats

Poyneer, L A, Veran, J, Dillon, D, Severson, S, and Macintosh, B. Wavefront control for the Gemini Planet Imager. United States: N. p., 2006. Web. doi:10.1117/12.672328.
Poyneer, L A, Veran, J, Dillon, D, Severson, S, & Macintosh, B. Wavefront control for the Gemini Planet Imager. United States. doi:10.1117/12.672328.
Poyneer, L A, Veran, J, Dillon, D, Severson, S, and Macintosh, B. Fri . "Wavefront control for the Gemini Planet Imager". United States. doi:10.1117/12.672328. https://www.osti.gov/servlets/purl/897974.
@article{osti_897974,
title = {Wavefront control for the Gemini Planet Imager},
author = {Poyneer, L A and Veran, J and Dillon, D and Severson, S and Macintosh, B},
abstractNote = {The wavefront control strategy for the proposed Gemini Planet Imager, an extreme adaptive optics coronagraph for planet detection, is presented. Two key parts of this strategy are experimentally verified in a testbed at the Laboratory for Adaptive Optics, which features a 32 x 32 MEMS device. Detailed analytic models and algorithms for Shack-Hartmann wavefront sensor alignment and calibration are presented. It is demonstrated that with these procedures, the spatially filtered WFS and the Fourier Transform reconstructor can be used to flatten to the MEMS to 1 nm RMS in the controllable band. Performance is further improved using the technique of modifying the reference slopes using a measurement of the static wavefront error in the science leg.},
doi = {10.1117/12.672328},
journal = {},
issn = {0277-786X},
number = ,
volume = 6272,
place = {United States},
year = {2006},
month = {4}
}

Conference:
Other availability
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