Magnetically tunable optical diffraction gratings based on a ferromagnetic liquid crystal. (CROSBI ID 684319)
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Podaci o odgovornosti
Rupp, R. A. ; Fleisch, M. ; Gao, S. ; Bošnjaković, Dejan ; Cmok, L. ; Medle-Rupnik, P. ; Mertelj, A. ; Lisjak, D. ; Zhang, X. ; Drevenšek-Olenik, I.
engleski
Magnetically tunable optical diffraction gratings based on a ferromagnetic liquid crystal.
Transmission optical diffraction gratings composed of periodic slices of a ferromagnetic liquid crystal and a conventional photoresist polymer are demonstrated. Dependence of diffraction efficiencies of various diffraction orders on an in-plane external magnetic field is investigated. It is shown that diffraction properties can be effectively tuned by magnetic fields as low as a few mT. The tuning mechanism is explained in the framework of a simple empirical model and also by numerical simulations based on the rigorous coupled wave analysis (RCWA). The obtained results provide a proof of principle of operation of magnetically tunable liquid crystalline diffractive optical elements applicable in contactless schemes for control of optical signals.
Liquid crystals ; micropatterned alignment ; magnetically tunable optical diffractive structures
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Podaci o prilogu
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Podaci o skupu
PR'19, Photorefractive Photonics and beyond
poster
18.06.2019-21.06.2019
Gérardmer, Francuska