Temporal broadening and scintillations of ultrashort optical pulses

    Authors

    Detts Kelly;L. C. Andrews

    Comments

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    Abbreviated Journal Title

    Waves Random Media

    Keywords

    MUTUAL-COHERENCE FUNCTION; FEMTOSECOND LIGHT-PULSES; ANALYTIC SOLUTION; GAUSSIAN-BEAM; PROPAGATION; TURBULENCE; WAVE; WEAK; PROFILES; Physics, Multidisciplinary

    Abstract

    The: purpose of this paper is to study the temporal broadening and temporal scintillations of ultrashort optical pulses. We present the general formulation of the temporal broadening and scintillation index of ultrashort (femtosecond) space-time Gaussian pulses propagating through weak optical turbulence and derive analytic approximations for the near- and far-hell zones. We then apply the results to cross-link, uplink and downlink communication channels in a laser satellite communication system. We show that both the temporal broadening and scintillations depend mainly on the strength of optical turbulence and the outer scale and increase with these parameters. We also show that 10-30 fs pulses broaden significantly more and have greater scintillations than wide pulses. Furthermore, the horizontal and vertical/slant path temporal broadening are identical and the temporal scintillation indices exhibit similar behaviour.

    Journal Title

    Waves in Random Media

    Volume

    9

    Issue/Number

    3

    Publication Date

    1-1-1999

    Document Type

    Article

    Language

    English

    First Page

    307

    Last Page

    325

    WOS Identifier

    WOS:000081692100003

    ISSN

    0959-7174

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