Imaging atomic line filter for satellite tracking

Details Imaging atomic line filter for satellite tracking Imaging atomic line filter for satellite tracking

Jun 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989spie.1059..111k&link_type=abstract

IN: Space sensing, communications, and networking; Proceedings of the Meeting, Los Angeles, CA, Jan. 16-18, 1989 (A90-31926 13-1

Physics

1

Bandpass Filters, Communication Networks, Optical Communication, Satellite Communication, Satellite Imagery, Satellite Tracking, Atomic Spectra, Optical Paths, Radio Frequencies, Solar Radiation, Synchronous Satellites

Scientific paper

The operational principles of an active image preserving atomic line filter (ALF), which matches the wavelength of semiconductor diode lasers, are explained, especially as related to satellite tracking for a communications network. Preliminary results showing image preservation at a spatial resolution of 0.5 mm by a cesium atomic line filter at 852 nm with an acceptance bandwidth of 0.002 nm are presented. The time response value shows that the ALF can be used for communications at data rates of up to about 1 MHz. The overall efficiency of the device of about 0.1 percent is assumed to be achievable. Expected limiting resolution, conversion efficiency, time response, and laser power requirements for image preserving alkali atomic line filters are also discussed.

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