title: Longitudinal turbulent overfocusing of radiation in optical receivers.
abstract: The effect of longitudinal overfocusing of the radiation in optical receivers that is due to refractive-index fluctuations in air has been experimentally investigated. The dependence of the magnitude of the source-image plane shift on the turbulence intensity along the path is estimated. It is shown that the use of a variable observation plane, which takes into account the shift of the source image plane with the change in the turbulent state of a medium, permits reduction of the mean spot size by a factor of 1.4-1.6.
authors.forename: M S
authors.initials: MS
authors.lastname: Belen'kii
authors.forename: V L
authors.initials: VL
authors.lastname: Mironov
authors.forename: V M
authors.initials: VM
authors.lastname: Sazanovich
authors.forename: R S
authors.initials: RS
authors.lastname: Tswyk