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A sensitive infrared imaging up converter and spatial coherence of atmospheric propagationAn infrared imaging technique based on the nonlinear interaction known as upconversion was used to obtain images of several astronomical objects in the 10 micrometer spectral region, and to demonstrate quantitatively the sharper images allowed for wavelengths beyond the visible region. The deleterious effects of atmospheric inhomogeneities on telescope resolution were studied in the infrared region using the technique developed. The low quantum efficiency of the device employed severely limited its usefulness as an astronomical detector.
Document ID
19770020104
Document Type
Contractor Report (CR)
Authors
Boyd, R. W. (California Univ. Berkeley, CA, United States)
Townes, C. H. (California Univ. Berkeley, CA, United States)
Date Acquired
September 3, 2013
Publication Date
January 1, 1977
Subject Category
ASTRONOMY
Report/Patent Number
NASA-CR-149891
Funding Number(s)
CONTRACT_GRANT: NGL-05-003-272
CONTRACT_GRANT: NGR-05-003-452
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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