Terahertz Properties of Polymers for 2D Nonlinear Grating Formation

Авторы: Denisyuk Igor, Ozheredov Ilya, Fokina Maria, Ignateva Iulia, Sinko Anton
Журнал: Journal of Infrared, Millimeter, and Terahertz Waves
Год издания: 2022
Издательство: Springer Verlag
Местоположение издательства: Germany
DOI: 10.1007/s10762-022-00878-y
Аннотация: A method for creating of a three-dimensional nonlinear optical grating based on the alternation of layers with different nonlinear optical properties has been developed. The spatial structure of the lattice is formed by an active layer from a polymethylmethacrylate (PMMA) matrix with dimethyl amino -4-n-methylstilbazolium-tosylate (DAST) nanocrystals and a photopolymer used as an inactive layer. The absorption and refraction terahertz spectral dependencies of the photopolymerizable composition and the DAST - PMMA nanocomposite have been studied. Obtained results allow us to consider this material as a good candidate for terahertz photonics. The processes of terahertz generation in the DAST - PMMA nanocomposite by the optical rectification of femtosecond laser pulses have been investigated and high generation efficiency have been demonstrated. The nonlinear optical grating based on the indicated components was created and its structure was investigated.
Добавил в систему: Синько Антон Сергеевич

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