High-contrast imaging testbed

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Several high-contrast imaging systems are currently under construction to enable the detection of extra-solar planets. In order for these systems to achieve their objectives, however, there is considerable developmental work and testing which must take place. Given the need to perform these tests, a spatially-filtered Shack-Hartmann adaptive optics system has been assembled to evaluate new algorithms and hardware configurations which will be implemented in these future high-contrast imaging systems. In this article, construction and phase measurements of a membrane 'woofer' mirror are presented. In addition, results from closed-loop operation of the assembled testbed with static phase plates are presented. The ... continued below

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PDF-file: 10 pages; size: 0.9 Mbytes

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Baker, K; Silva, D; Poyneer, L; Macintosh, B; Bauman, B; Palmer, D et al. January 23, 2008.

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Description

Several high-contrast imaging systems are currently under construction to enable the detection of extra-solar planets. In order for these systems to achieve their objectives, however, there is considerable developmental work and testing which must take place. Given the need to perform these tests, a spatially-filtered Shack-Hartmann adaptive optics system has been assembled to evaluate new algorithms and hardware configurations which will be implemented in these future high-contrast imaging systems. In this article, construction and phase measurements of a membrane 'woofer' mirror are presented. In addition, results from closed-loop operation of the assembled testbed with static phase plates are presented. The testbed is currently being upgraded to enable operation at speeds approaching 500 hz and to enable studies of the interactions between the woofer and tweeter deformable mirrors.

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PDF-file: 10 pages; size: 0.9 Mbytes

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  • Presented at: SPIE Photonics West, San Jose, CA, United States, Jan 19 - Jan 24, 2008

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  • Report No.: LLNL-PROC-400980
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 926034
  • Archival Resource Key: ark:/67531/metadc896643

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  • January 23, 2008

Added to The UNT Digital Library

  • Sept. 27, 2016, 1:39 a.m.

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  • Dec. 9, 2016, 9:26 p.m.

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Baker, K; Silva, D; Poyneer, L; Macintosh, B; Bauman, B; Palmer, D et al. High-contrast imaging testbed, article, January 23, 2008; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc896643/: accessed August 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.