METHOD OF FORMING WAVEGUIDE, SPATIALLY INHOMOGENEOUS AND DIFFRACTION STRUCTURES IN NEAR-SURFACE REGIONS OF ELECTROOPTICAL CRYSTALS Russian patent published in 2025 - IPC G02F1/35 

FIELD: optoelectronics.

SUBSTANCE: invention relates to optoelectronics and can be used in making integrated optical elements, devices and photonics devices. Method of forming waveguide, spatially inhomogeneous and diffraction structures in near-surface regions of electro-optical crystals includes irradiation with a monochromatic wave of the surface and/or volume of the electro-optical crystal to change the refraction index, where the optical source acts with focused or collimated continuous or pulsed radiation on the local region of the crystal with dopants, which increase the photosensitivity of the material with an absorption coefficient for the exposure wave of not less than 0.5 mm^-1, and generates a profile of changes in refraction index by moving the crystal relative to the light field while continuously monitoring the profile of the laser beams.

EFFECT: method enables formation of various topologies of regular and irregular waveguide structures, spatially inhomogeneous and diffraction structures, possibility of reconfiguration of the formed structures.

1 cl, 7 dwg