Coherent Beam Amplification with Dynamic Holograms in Glass-Forming Molecular Azobenzene-Based Materials

Optics Continuum 2022
Yaroslav Skrypka, Valdis Kokars, Kaspars Traskovskis, Andris Ozols, Pēteris Augustovs, Alexandr Shumelyuk, Serguey Odoulov

Abstract: 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.

Keywords
Holographic light amplification | azobenzene based molecular films
DOI
10.1364/OPTCON.451627

Skrypka, Y., Kokars, V., Traskovskis, K., Ozols, A., Augustovs, P., Shumelyuk, A., Odoulov, S. Coherent Beam Amplification with Dynamic Holograms in Glass-Forming Molecular Azobenzene-Based Materials. Optics Continuum, 2022, Vol. 1, No. 4, pp. 885-895. ISSN 2770-0208. Available from: doi:10.1364/OPTCON.451627

Publication language
English (en)