A5040390363- Photorefractive and Nonlinear Optics
- Solid-state spectroscopy and crystallography
- Luminescence Properties of Advanced Materials
- Solid State Laser Technologies
- Ferroelectric and Piezoelectric Materials
- Photonic and Optical Devices
- Crystal Structures and Properties
- Advanced Fiber Laser Technologies
- Semiconductor materials and devices
- Acoustic Wave Resonator Technologies
- Quantum optics and atomic interactions
Perm State University
2022-2025
Institute of Physics
2025
Lithium niobate (LN) is one of the key materials in modern instrument engineering. Currently, photonic devices based on thin films have great potential for use. That why role surfaces technological operations strongly increases. Herein, powerful effect modifying surface LN oxygen plasma at low pressures diffusion coefficient hydrogen ions demonstrated. Plasma activation leads to changes chemical composition, found by X‐Ray photoelectron spectroscopy (XPS), Raman, and IR methods that part...
Herein, the results of studying reflection stripe domains growing during polarization reversal in congruent lithium niobate single crystals modified by soft proton exchange are presented. The situ optical imaging reveals with growth directions along three equivalent Y crystallographic axes. When domain approaches standing one, its direction changes 120° to another axis. A strong difference on opposite polar surfaces is revealed: at Z + surface it occurs lower distances through two successive...
Congruent X-cut lithium niobate samples were investigated on the proton exchange process and properties of waveguides after thermal surface treatment have been carried out. It was shown, that niobate, is less intense at identical parameters for all samples. This leads to smaller deformations crystal lattice each step process. The calculation density etching pits, dislocations planar gives a decrease treatment. prism coupling method shows slight in refractive index crystal. These results...