Physics – Optics
Scientific paper
May 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996spie.2714..240b&link_type=abstract
Proc. SPIE Vol. 2714, p. 240-259, 27th Annual Boulder Damage Symposium: Laser-Induced Damage in Optical Materials: 1995, Harold
Physics
Optics
Scientific paper
In order to effectively beam laser power into space to power satellites or to remove space debris in mid or high earth orbit very large mirrors (perhaps 12 m in diameter or more) and an adaptive optic systems to penetrate the atmosphere are required. Mirrors with adaptive optic segment sizes less than the equivalent. Fried coefficient for atmospheric turbulence (typically 3 - 5 cm at zenith in the visible region of the spectrum) are optimum for atmospheric penetration. These new mirrors may have hundreds of thousands of segments. The behavior of such mirrors under high powered laser irradiation is not clear, although for a large mirror both average and peak irradiation levels will be very low. Attention must be paid to penetration of laser energy into the gaps between segments and to the cumulative effect of edge diffraction. These problems do not appear to be severe and this new class of optics appears to offer us new possibilities for use in space. It may change the way in which we look at telescopes for space applications.
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