Document Detail

Optical phased array configuration for an extremely large telescope.
MedLine Citation:
PMID:  14765919     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Extremely large telescopes are currently under consideration by several groups in several countries. Extrapolation of current technology up to 30 m indicates a cost of over dollars 1 billion. Innovative concepts are being explored to find significant cost reductions. We explore the concept of an Optical Phased Array (OPA) telescope. Each element of the OPA is a separate Cassegrain telescope. Collimated beams from the array are sent via an associated set of delay lines to a central beam combiner. This array of small telescope elements offers the possibility of starting with a low-cost array of a few rings of elements, adding structure and additional Cass elements until the desired diameter telescope is attained. We address the salient features of such an extremely large telescope and cost elements relative to more conventional options.
Aden Baker Meinel; Marjorie Pettit Meinel
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Applied optics     Volume:  43     ISSN:  0003-6935     ISO Abbreviation:  Appl Opt     Publication Date:  2004 Jan 
Date Detail:
Created Date:  2004-02-09     Completed Date:  2004-03-02     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0247660     Medline TA:  Appl Opt     Country:  United States    
Other Details:
Languages:  eng     Pagination:  601-7     Citation Subset:  -    
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