Recovery of laser beam in a turbulent amplifier by phase conjugation

Jenn-Hawn Tarng*, G. M. Chen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The recovery of an optical bean, distorted by a turbulent medium with random gain (loss), by using phase conjugation has been investigated. Turbulence broadens the beamwidth and the random gain enhances the broadening effect. It is found that the optical beam can not be totally recovered by phase conjugation due to the existence of random gain. Meanwhile, enhanced backscattering occurs since there is a coherent addition of the forward incident beam and the backscattered beam by a phase conjugate mirror (PCM). For comparison, the beam reflected by a conventional mirror is also considered. In the case of PCM the enhanced backscattering is stronger than that of the mirror case. The average reflected beam intensity is evaluated by using the path integral technique.

Original languageEnglish
Title of host publicationBetter Understanding of Earth Environment
EditorsSadao Fujimura
PublisherPubl by IEEE
Pages258-260
Number of pages3
ISBN (Print)0780312406
DOIs
StatePublished - 1 Dec 1993
EventProceedings of the 13th Annual International Geoscience and Remote Sensing Symposium IGARSS'93 - Tokyo, Jpn
Duration: 18 Aug 199321 Aug 1993

Publication series

NameInternational Geoscience and Remote Sensing Symposium (IGARSS)
Volume1

Conference

ConferenceProceedings of the 13th Annual International Geoscience and Remote Sensing Symposium IGARSS'93
CityTokyo, Jpn
Period18/08/9321/08/93

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