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  • 42.65  (1)
  • 61.80.Ba  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Surface structure of cubic ionic crystals studied by optical second-harmonic generation (1988)
    Springer
    Applied physics 46 (1988), S. 131-138 
    Details
    ISSN: 1432-0649
    Keywords: 42.65 ; 68.20
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Polarization and azimuthal dependencies of optical second-harmonic generation at the surface of cubic ionic crystals have been measured on polished surfaces of BaF2 (111) and (100), CaF2 (111) and NaCl (111), using a fundamental wavelength of 532 nm. The results are interpreted in terms of available theory, which shows that for transparent cubic media only the dipolar surface contribution depends on the crystal orientation. For BaF2 (111) and NaCl (111) the crystallineC 3vgeometry could be identified but not for CaF2 (111). Although the nature of the electronic surface structure giving rise to a dipolar polarizability remains undetermined, the experimental result suggests that it may be due to impurity or defect states in the band gap at the surface.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00686465
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  • 2
    Electronic Resource
    Electronic Resource
    Non-destructive reading of laser-induced single-shot incubation in dielectric coatings (1993)
    Springer
    Applied physics 56 (1993), S. 95-98 
    Details
    ISSN: 1432-0630
    Keywords: 61.80.Ba ; 65.70.+y ; 78.65.Gb
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Two-dimensional photothermal displacement measurements were carried out on TiO2, ZrO2, and HfO2 coatings to uncover single shot incubation produced by 248 nm laser light at fluences below the damage threshold. The incubation behavior of the three coatings differs and correlates with the ratio of band gap to photon energy. The non-destructive nature of the photothermal displacement technique, its high lateral resolution, and its sensitivity for reading single shot imprints by an excimer laser lends this scheme a capacity for use in optical storage.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00351910
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    Paper (German National Licenses)
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