Characterization of artificial guide stars generated in the mesospheric sodium layer with a sum-frequency laser.

Details Characterization of artificial guide stars generated in the mesospheric sodium layer with a sum-frequency laser. Characterization of artificial guide stars generated in the mesospheric sodium layer with a sum-frequency laser.

Feb 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994josaa..11..806j&link_type=abstract

Journal of the Optical Society of America A, Vol. 11, No. 2, p. 806 - 812

Physics

Optics

9

Adaptive Optics: Guide Stars

Scientific paper

The authors generated resonant-fluorescent artificial guide stars in the Earth's mesospheric-sodium layer with an 840-Hz, 10-mJ sum-frequency laser operating at 589 nm and have conducted experiments to characterize the guide stars for use as beacons for atmospheric compensation with adaptive optics. We made high-resolution images with a 1.5-m telescope and CCD camera. Propagating circularly polarized light gives a 41-48% increase in fluorescent return signal over linearly polarized light. Artificial guide stars are suitable for atmospheric compensation with the use of adaptive optics.

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