DEVICE FOR FORMING WAVEGUIDE, SPATIALLY INHOMOGENEOUS AND DIFFRACTION STRUCTURES IN NEAR-SURFACE AREAS OF ELECTROOPTICAL CRYSTALS Russian patent published in 2025 - IPC G02B6/10 

FIELD: optoelectronics.

SUBSTANCE: invention relates to optoelectronics and can be used in making integrated optical elements, devices and photonics devices. Device for formation of waveguide, spatially inhomogeneous and diffraction structures in near-surface areas of electrooptical crystals includes a laser radiation source, a lens system, a three-dimensional positioner. Radiation of solid-state YAG:Nd³⁺ laser operating in continuous mode at double frequency λ = 532 nm, is modulated by an optical shutter and projected by a lens system onto the surface of a crystalline substrate mounted on a three-dimensional positioner with rotary platforms for orthogonal adjustment of the position relative to the plane of the light field, image of intensity distribution of which on the input face of the crystal is transmitted by a spherical lens to a laser radiation analyser connected to a data processing unit.

EFFECT: possibility of linear positioning and rotation of the crystal relative to the recording laser radiation in three spatial and two angular coordinates; use of an optical shutter to control the intensity of laser radiation; use of a laser radiation analyser to control intensity and transverse dimensions of a light beam.

1 cl, 1 dwg