Multiphoton effects in the polydiacetylene poly bis(p-toluene sulfonate) of 2,4-hexadiyne-1,6-diol (PTS)

    Authors

    F. Yoshino; S. Polyakov; L. Friedrich; M. G. Liu; H. Shim;G. I. Stegeman

    Abbreviated Journal Title

    J. Nonlinear Opt. Phys. Mater.

    Keywords

    NONLINEAR REFRACTIVE-INDEX; P-TOLUENE SULFONATE; FILM WAVE-GUIDES; OPTICAL NONLINEARITIES; 4-PHOTON ABSORPTION; CONJUGATED POLYMERS; SPECTROSCOPY; STATE; CRYSTALS; Optics; Physics, Applied

    Abstract

    Multiphoton absorption was investigated in single crystals of the polymer poly bis(p-toluene sulfonate) of 2,4-hexadiyne-1,6-diol (PTS). Using modified growth and polymerization techniques, high optical quality crystals were grown and their linear absorption spectrum measured. Very large four-photon absorption was measured using Z-scan with a value of alpha(4) = 0.3 cm(5)/GW(3) obtained at 1600 nm. From the known one and two-photon absorption spcctra, the three- and four-photon spectra are predicted to overlap. This leads to three-photon enhanced, four-photon absorption which is interpreted as the mechanism responsible for such large four-photon absorption.

    Journal Title

    Journal of Nonlinear Optical Physics & Materials

    Volume

    9

    Issue/Number

    1

    Publication Date

    1-1-2000

    Document Type

    Article; Proceedings Paper

    Language

    English

    First Page

    95

    Last Page

    104

    WOS Identifier

    WOS:000087877200008

    ISSN

    0218-1991

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