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Title: High-contrast imaging testbed

Conference ·
DOI:https://doi.org/10.1117/12.771755· OSTI ID:926034

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.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
926034
Report Number(s):
LLNL-PROC-400980; TRN: US200807%%476
Resource Relation:
Journal Volume: 6888; Conference: Presented at: SPIE Photonics West, San Jose, CA, United States, Jan 19 - Jan 24, 2008
Country of Publication:
United States
Language:
English