TY - GEN
T1 - Adaptive wavefront tilt correction for imaging and laser beam formation in a turbulent atmosphere
AU - Samelsohn, Gregory M.
AU - Mazar, Reuven
PY - 1995/12/1
Y1 - 1995/12/1
N2 - The efficiency of tracking the random tilt variation of the wavefront in order to increase the average intensity with possible suppression of the intensity fluctuations is investigated. The analysis of the subject is suitable for both transmitting and receiving optical systems. The suggestion of a simple approximation for the tilt-corrected phase structure function allows us to reduce the integration order in the expressions for the statistical moments of the corrected field and to express them in the same form as those in the absence of the correction. Comparison of the results for arbitrary efficiency criteria of the correction demonstrates that the optimal conditions for fluctuation suppression and the increase of the average intensity at the recording point occur in different turbulent regimes. A significant fluctuation suppression is observed at a much weaker turbulence level as compared with the value corresponding to the maximum of the average intensity increase.
AB - The efficiency of tracking the random tilt variation of the wavefront in order to increase the average intensity with possible suppression of the intensity fluctuations is investigated. The analysis of the subject is suitable for both transmitting and receiving optical systems. The suggestion of a simple approximation for the tilt-corrected phase structure function allows us to reduce the integration order in the expressions for the statistical moments of the corrected field and to express them in the same form as those in the absence of the correction. Comparison of the results for arbitrary efficiency criteria of the correction demonstrates that the optimal conditions for fluctuation suppression and the increase of the average intensity at the recording point occur in different turbulent regimes. A significant fluctuation suppression is observed at a much weaker turbulence level as compared with the value corresponding to the maximum of the average intensity increase.
UR - http://www.scopus.com/inward/record.url?scp=0029535589&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0029535589
SN - 0819417742
SN - 9780819417749
T3 - Proceedings of SPIE - The International Society for Optical Engineering
SP - 50
EP - 58
BT - Proceedings of SPIE - The International Society for Optical Engineering
T2 - 9th Meeting on Optical Engineering in Israel
Y2 - 24 October 1994 through 26 October 1994
ER -