Coherent beam amplification with dynamic holograms in glass-forming molecular azobenzene-based materials

Self-diffraction of two coherent light waves that record a holographic grating in thin films of azobenzene-containing molecular glass-forming materials is used for intensity enhancement of a weak beam in expense of the strong beam intensity. The intensity of a weak probe beam is doubled at interacti...

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Bibliographic Details
Published in:Optics continuum 2022-04, Vol.1 (4), p.885
Main Authors: Skrypka, Yaroslav, Kokars, Valdis, Traskovskis, Kaspars, Ozols, Andris, Augustovs, Peteris, Shumelyuk, Alexandr, Odoulov, Serguey
Format: Article
Language:English
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Summary:Self-diffraction of two coherent light waves that record a holographic grating in thin films of azobenzene-containing molecular glass-forming materials is used for intensity enhancement of a weak beam in expense of the strong beam intensity. The intensity of a weak probe beam is doubled at interaction length of only 8 µm thus pointing to a very high specific coupling constant. The characteristic time of the intensity redistribution is relatively long, on the order of 200 s. Consequently, the underlying process of pronounced Kerr-type optical nonlinearity is related, most probably, to the photoinduced mass transfer.
ISSN:2770-0208
2770-0208
DOI:10.1364/OPTCON.451627