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  • 1
    Electronic Resource
    Electronic Resource
    Second-harmonic generation from embedded polarization sheets (1992)
    Springer
    Applied physics 54 (1992), S. 95-97 
    Details
    ISSN: 1432-0649
    Keywords: 42.65.c
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We consider surface second-harmonic (SH) generation in terms of both a phenomenological description and a microscopical model. As sample serve Langmuir-Blodgett-type monolayers of perfect rotational symmetry around the surface normal. Their second-order susceptibility was determined with high precision by evaluation of the angle-of-incidence dependence in Fresnel reflection and in total internal reflection. The appropriate microscopical model requires embedding of the polarization sheet responsible for SH emission into a uniform medium of permittivity ɛm(ω) and ɛm(2ω) with ɛm(ω)/ɛm(2ω)≠1. The implications for the derivation of molecular average tilt angles from susceptibility ratios are also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00331740
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  • 2
    Electronic Resource
    Electronic Resource
    Phase Grating from Ordered Polymer Lattices for Optica Image Preprocessing (1997)
    Springer
    Journal of biological physics 23 (1997), S. 73-88 
    Details
    ISSN: 1573-0689
    Keywords: OPTO-RETINA ; 3D grating ; 3D vision ; 4D vision ; Colour vision ; Polymer ; Latex ; Image pre-processing ; Diffraction ; Conoscopical microscopy.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Notes: Abstract The ‘inverted’ retina of the human eye can beemulated by multilayer gratings from polymer latexparticles located in the image plane of opticalsystems. This so called OPTO-RETINA provides v. Laueinterference patterns in visible light with atrichromatic characteristic containing,simultaneously, local spatiotemporal direction anddistance information, which are relevant to 3Dspatial vision and 4D spatiotemporal Fouriercorrelator-optical preprocessing in shape andmotion analysis.As a first step in the realization of OPTO-RETINAproperties the formation of hexagonally orderedmonolayers of polystyrene latex sphereswith diameters in the~μm range is reported and firstresults of diffraction and dispersion of white lightby these layers obtained by conoscopical opticalmicroscopy are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004932705351
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    Paper (German National Licenses)
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