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An infrared upconverter for astronomical imagingAn imaging upconverter has been constructed which is suitable for use in the study of the thermal 10-micron radiation from astronomical sources. The infrared radiation is converted to visible radiation by mixing in a 1-cm-long proustite crystal. The phase-matched 2-kayser bandpass is tunable from 9 to 11 microns. The conversion efficiency is 2 by 10 to the -7th power and the field of view of 40 arc seconds on the sky contains several hundred picture elements, approximately diffraction-limited resolution in a large telescope. The instrument has been used in studies of the sun, moon, Mercury, and VY Canis Majoris.
Document ID
19770067434
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Boyd, R. W. (California Univ. Berkeley, CA, United States)
Townes, C. H. (California, University Berkeley, Calif., United States)
Date Acquired
August 9, 2013
Publication Date
October 1, 1977
Publication Information
Publication: Applied Physics Letters
Volume: 31
Subject Category
ASTRONOMY
Funding Number(s)
CONTRACT_GRANT: NGL-05-003-272
CONTRACT_GRANT: NGR-05-003-452
Distribution Limits
Public
Copyright
Other