Superior utility of lasers for interstellar beacons, communications, and travel

Details Superior utility of lasers for interstellar beacons, communications, and travel Superior utility of lasers for interstellar beacons, communications, and travel

Aug 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993spie.1867..126r&link_type=abstract

Proc. SPIE Vol. 1867, p. 126-137, The Search for Extraterrestrial Intelligence (SETI) in the Optical Spectrum, Stuart A. Kingsle

Computer Science

Scientific paper

Present research supporting the Search for Extraterrestrial Intelligence (SETI) and Communications with Extraterrestrial Intelligence (CETI) is almost entirely focused upon microwave wavelength and technologies. This paper demonstrates compelling reasons why the search should be broadened to optical wavelengths. Previous calculations of laser transmission efficiency are shown to be incorrect because an essentially lossless laser transmission system is feasible and star noise can be rendered inconsequential. New perceptions regarding the feasibility of laser technologies, together with reassessments of signal-to-noise considerations, indicate both the feasibility and desirability of optical interstellar transmissions, particularly at infrared and visible wavelengths.

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