Linear optical properties of polydiacetylene para-toluene sulfonate thin films

    Authors

    A. Feldner; W. Reichstein; T. Vogtmann; M. Schwoerer; L. Friedrich; T. Pliska; M. G. Liu; G. I. Stegeman;S. H. Park

    Comments

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    Abbreviated Journal Title

    Opt. Commun.

    Keywords

    nonlinear optical materials; polymers; organic thin films; waveguides; refractive index; absorption; CONJUGATED POLYMER; NONLINEARITIES; SPECTROSCOPY; ABSORPTION; CRYSTALS; STATE; Optics

    Abstract

    We report measurements of the dispersion in the linear optical properties (linear absorption coefficient and refractive index) of polydiacetylene para-toluene sulfonate (PDA-PTS) single crystal waveguide films prepared by thermal polymerization of the monomer free floating in solution and subsequent attachment of the film to the substrate. A maximum absorption coefficient > 10(5) cm(-1) at a wavelength of 620 nm is measured for polarization parallel to the polymer chains, in agreement with previous measurements. The refractive index parallel to the polymer axis is significantly lower in these thin films as compared to bulk PDA-PTS crystals, whereas the index perpendicular to the chains is comparable to that of bulk crystals. Sellmeier parameters describing the dispersion of the refractive index in the near-infrared spectral range are given. (C) 2001 Published by Elsevier Science B.V.

    Journal Title

    Optics Communications

    Volume

    195

    Issue/Number

    1-4

    Publication Date

    1-1-2001

    Document Type

    Article

    Language

    English

    First Page

    205

    Last Page

    209

    WOS Identifier

    WOS:000170134300024

    ISSN

    0030-4018

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