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  • 1
    Electronic Resource
    Electronic Resource
    Manifestation of circular photogalvanic current by dynamic holography in BaTiO3 (1993)
    Springer
    Applied physics 56 (1993), S. 303-305 
    Details
    ISSN: 1432-0630
    Keywords: 42.40 ; 42.65 ; 42.70
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract We report the first measurement of the photo-galvanic circular current antisymmetric tensor component in BaTiO3: Co. The measurement gives a value of this coefficient, for extraordinary beam amplification, of 4×10−9 A/W using a nonstationary measurement technique at a wavelength of 0.632 μm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00324346
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Origin of the resonant optical Kerr nonlinearity in Cd(S, Se)-doped glasses and related topics (1995)
    Springer
    Applied physics 61 (1995), S. 17-26 
    Details
    ISSN: 1432-0649
    Keywords: 42.65 ; 42.70
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract After having reported preliminary results related to saturation, we first theoretically consider the various mechanisms contributing to the resonant optical Kerr effect in Cd(S, Se)-doped glasses. We obtain the expression for the expected effective susceptibility in different possible cases. This nonlinearity is studied experimentally using optical-phase conjugation in the low-intensity regime. We show that, by time resolving the nonlinear response of such glasses having experienced various degrees of photodarkening, we can clearly assess the origin of the resonant optical Kerr effect in these materials. Usually, a combination of a fast free-carrier contribution due to particles without traps and of a slow trapped-carrier one due to particles with traps is observed. For the free-carrier contribution, induced absorption is observed to be almost as important as absorption saturation. We also report frequency-dependent measurements and discuss the change in absorption spectrum and the increase of the nonradiative decay rate that accompany darkening.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01090967
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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