Intermittent curing and its effect on pulsed laser-induced photopolymerization

    Authors

    X. Sun; D. Yin; H. Dai; J. Liu; R. Lu;S. T. Wu

    Comments

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    Abbreviated Journal Title

    Appl. Phys. B-Lasers Opt.

    Keywords

    DISPERSED LIQUID-CRYSTALS; HOLOGRAM FORMATION; POLYMER; GRATINGS; SLICES; MODEL; Optics; Physics, Applied

    Abstract

    Different intermittent curing methods were conducted for pulsed laser induced photopolymerization reactions in a TMPTA acrylic system. Two methods of curing were compared, named grouped pulses impingement (GPI) and consecutively pulsed curing (CPC), respectively, in which the total number of the curing pulses were kept same. In GPI, a prominent light diffraction effect was observed in the post curing process, but was absent in the CPC procedure. A condensed but limited sized core of polymeric structure was the cause of the light diffraction. The amount of inhomogeneity in the refractive index for the core was about 90% of the cured background. Simulations based on Fresnel diffraction theory were performed, and the result was in good agreement with the experimental observations.

    Journal Title

    Applied Physics B-Lasers and Optics

    Volume

    92

    Issue/Number

    1

    Publication Date

    1-1-2008

    Document Type

    Article

    Language

    English

    First Page

    93

    Last Page

    98

    WOS Identifier

    WOS:000256908600018

    ISSN

    0946-2171

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