High-dynamic-range cascaded-focus optical limiter

    Authors

    F. E. Hernandez; S. Yang; E. W. Van Stryland;D. J. Hagan

    Abbreviated Journal Title

    Opt. Lett.

    Keywords

    ABSORPTION; BEAM; Optics

    Abstract

    We report experimental results of using an f/5, cascaded-focus optical geometry for a high-dynamic-range optical limiter. The device consists of a a-cm-thick CS2 cell at the first focus and a reverse saturable-absorber dye in a thin cell (0.1 mm) at the second focus. The strong self-focusing in the CS2 that is due to the ac Kerr effect and electrostriction keeps the energy at the second cell below its damage threshold. Using lead phthalocyanine in chloroform as the reverse saturable-absorption material, we clamped the maximum output energy below 1 mu J for input energies up to 14.5 mJ without damage. We used a frequency-doubled, Q-switched 5-ns (FWHM) Nd:YAG laser operating at a 10-Hz repetition rate. of the device is at least 7500. (C) 2000 Optical Society of America OCIS codes: 260.5950, 190.0190.

    Journal Title

    Optics Letters

    Volume

    25

    Issue/Number

    16

    Publication Date

    1-1-2000

    Document Type

    Article

    Language

    English

    First Page

    1180

    Last Page

    1182

    WOS Identifier

    WOS:000088727400016

    ISSN

    0146-9592

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