Physics – Optics
Scientific paper
Sep 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991optl...16.1367h&link_type=abstract
Optics Letters (ISSN 0146-9592), vol. 16, Sept. 15, 1991, p. 1367-1369. Research supported by DARPA.
Physics
Optics
24
Adaptive Optics, Atmospheric Composition, Atmospheric Stratification, Atmospheric Turbulence, Mesosphere, Sodium, Wave Fronts, Beacons, Dye Lasers, Laser Beams, Pulsed Lasers, Rayleigh Scattering
Scientific paper
A synthetic beacon in the mesospheric sodium layer was used to measure wave fronts propagating through atmospheric turbulence. Phase measurements were also performed using Rayleigh backscattering at altitudes from 6 to 20 km. The results are believed to be the first verification of the predicted behavior of a synthetic beacon in the mesospheric sodium layer and the first demonstration that focal anisoplanatism is smaller for a sodium-layer beacon than for a lower-altitude Rayleigh beacon. It is suggested that the sodium-layer beacon may be a feasible source for use with adaptive optics systems for ground-based telescopes.
Bradley Lee C.
Herrmann Jan
Humphreys Ronald A.
Primmerman Charles A.
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