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Nonlinear optical transmission of polyquinoline thin film at 532 nm

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Abstract

Optical nonlinearities of polyquinoline thin film were studied by measuring fluence-dependent transmission with nanosecond pulses from the second harmonic of an Nd: YAG laser. It is found that the origin of nonlinearity is due to the excited-state absorption in the nanosecond domain. To our knowledge, we report the first simultaneous determination of the decay time for the excited-state and the excited-state absorption cross-section of polyquinoline by analysing the linear slopes of the transmission versus fluence plot, which are dependent on pulsewidth.

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Authors and Affiliations

  1. Department of Physics, Sogang University, CPO Box 1142, 100-611, Seoul, Korea

    Sang Hun Lee & Bum Ku Rhee

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  1. Sang Hun Lee
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  2. Bum Ku Rhee
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Lee, S.H., Rhee, B.K. Nonlinear optical transmission of polyquinoline thin film at 532 nm. Opt Quant Electron 27, 371–377 (1995). https://doi.org/10.1007/BF00563572

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