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1 May 1990 Laser atmospheric phase and amplitude measurement
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An experimental system is presented for measuring a pulsed laser beam's atmospherically-induced phase and amplitude distortions, using a fixed receiver and mobile transmitter. The noninterferometric measurement method operates over ground paths up to 2 km, and has as its primary advantage over MTF and scintillometric methods the gathering of explicit phase information. System operation involves the transmission of 10-20 nsec laser pulses, at either 532 or 1064 nm, from the 200-m aperture of the transmitter to the 200-mm aperture of the receiver. The pupil and focal planes are related by the two-dimensional Fourier transform; by iteratively analyzing the irradiance distributions in these planes, the computer can ascertain the phase and amplitude of the entering wavefront.
© (1990) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Till Wolfgang Liepmann "Laser atmospheric phase and amplitude measurement", Proc. SPIE 1221, Propagation of High-Energy Laser Beams Through the Earth's Atmosphere, (1 May 1990);

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