QC 351 A7 no. 12 / The technique of coherent detection has been used to explore the
problems involved in detecting extremely low power levels. An input
signal power level of 5 x 10^-19 watts of 3.39u radiation was detected with
voltage S/N of 2, in good agreement with theory.
The major experimental problem was elimination of feedback from the
local oscillator into the laser source. Narrowness of bandwidth was
limited by instability in detector bias. Neither of these difficulties
presents a fundamental limitation to a well designed receiver of light
from a distant source.
| Identifer | oai:union.ndltd.org:arizona.edu/oai:arizona.openrepository.com:10150/621606 |
| Date | 01 1900 |
| Creators | Hanlon, J., Jacobs, S. F. |
| Publisher | Optical Sciences Center, University of Arizona (Tucson, Arizona) |
| Source Sets | University of Arizona |
| Language | en_US |
| Detected Language | English |
| Type | Technical Report |
| Rights | Copyright © Arizona Board of Regents |
| Relation | Optical Sciences Technical Report 12 |
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