NONLINEARLY OPTICAL CRYSTAL OF STRONTIUM BERILLATOBORATE, METHOD OF GROWING OF NONLINARLY OPTICAL SINGLE CRYSTALS OF STRONTIUM BERILLATOBORATE AND NONLINEARLY OPTICAL DEVICE Russian patent published in 1998 - IPC

FIELD: nonlinearly optical crystal of novel type of strontium berillatoborate with chemical formula Sr₂Be₂B₂O₇, in abbreviated form SBBO. SUBSTANCE: compound SBBO is synthesized in chemical reaction between substances in solid state at high temperature of synthesis. Single crystal of strontium berillatoborate is grown by flux method in which flux solvents are used in form of SrB₂O₄, NaF and other fluorides. Measurement results have shown that this compound possesses the following structural and physical characteristics: space group Pb₆(C66

); point group C₆; elementary cell: a = 4.633 (3) , c = 15.311 (7) ; z = Z, V= 283.3. SBBO relates to the crystals with negative optical axis. These crystals may be widely used in generators of harmonic radiation, in optical parametric devices and amplifiers and optical light conduits in ultraviolet band. It is possible with use of these crystals to produce coherent luminous radiation with wave length less than 20 nm by frequency multiplication. EFFECT: higher efficiency. 8 cl, 5 dwg