METHOD OF FORMING PERIODICAL DOMAIN STRUCTURE IN POTASSIUM-TITANIUM-PHOSPHATE CRYSTAL FOR NONLINEAR TRANSFORMING OF LASER RADIATION FREQUENCY

摘要

FIELD: laser radiation generation; non-linear optics. SUBSTANCE: method is based upon changing domain structure of crystal at thermal treatment of the crystal. Dielectric film is present onto the surface of the crystal, which film has thermal expansion coefficient and electric conductivity being different from thermal expansion coefficient and electric conductivity of the crystal. EFFECT: improved efficiency of operation. 4 dwg