Peculiarities of the Holographic Vector Recording by Circularly Polarized Beams in Molecular Glassy Films of Different Type
Abstracts of the 33rd Scientific Conference 2017
Pēteris Augustovs, Andris Ozols, Valdis Kokars, Elmārs Zariņš, Kaspars Traskovskis, Valdis Kampars, Lauma Laipniece

The goal of this work was the experimental study of L-R recording [recording by orthogonally circularly polarized (L and R) 532 nm laser beams] in organic molecular glassy films of three types; K-D-P-1, K-D-25, IWK-2D and ZWK-1TB films with azobenzene chromophores; LL-50/50, LL-75, LL-82 films with dendronized azobenzene chromophores; EM14, EM15, KS-11-1, KS-35 and KS-39 films with non-azobenzene chromophores. As2S3 amorphous chalcogenide film was also studied. L-R recording with a 532 nm light was possible in all studied samples. Readout was made with circularly polarized 632.8 nm beam. When the circular polarization of the readout beam was changed to the orthogonal one, energy transfer was observed between the diffracted beams of the plus first and the minus first orders. This effect was the strongest in LL samples (100% energy transfer) and the weakest in IWK-2D sample (almost no transfer). It follows from the theory of thin L-R polarization gratings [1]. This means that holographic recording mechanism in LL samples is completely based on photoinduced linear anisotropy whereas in other samples other mechanisms (e.g., photoinduced mass transfer) are active as well.


Atslēgas vārdi
Light polarization, molecular films, photoinduced anisotropy
Hipersaite
http://www.cfi.lu.lv/fileadmin/user_upload/lu_portal/projekti/cfi/CFI_konferences/CFI_33.konf.tezes.pdf#page=91

Augustovs, P., Ozols, A., Kokars, V., Zariņš, E., Traskovskis, K., Kampars, V., Laipniece, L. Peculiarities of the Holographic Vector Recording by Circularly Polarized Beams in Molecular Glassy Films of Different Type. No: Abstracts of the 33rd Scientific Conference, Latvija, Riga, 22.-24. februāris, 2017. Riga: Institute of Solid State Physics. University of Latvia, 2017, 91.-91.lpp.

Publikācijas valoda
English (en)
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