Metaelements formation via volume microstructuring of silicate glass using femtosecond laser radiation

Abstract

Despite fierce competition with promising planar metal-dielectric and dielectric metasurfaces, nano- and microstructures in volume dielectrics retain their positions in areas such as light beams polarization and wavefront conversion, color staining and formation of holograms. The main reason for that is their wider working spectral range and higher optical resistance to damage.
Also such nano- and microstructures claim leadership in the field of three-dimensional optical memory, single-photon sources, invisible (luminescent) micromarking, etc. Compared with previous studies, the focus of present work is a possibility of creating structures that can have birefringence in the volume of a silicate glass with direct femtosecond laser recording of microline arrays, taking into account possible manifestations, self-organized nanogrids, and residual microscale stresses. A distinctive feature of the studied material is the presence of a significant amount of optical inhomogeneities and chemical impurities.

Speaker

Michael Kovalev
Bauman Moscow State Technical University
Russia

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