FACILITY TO GROW ORIENTED AND PROFILED CRYSTALS OF KDR FAMILY FROM POINT SEED AND SEED UNIT OF FACILITY Russian patent published in 2003 - IPC

FIELD: technology of growing crystals from aqueous solutions, winning of crystalline workstocks of optical elements for nonlinear optics. SUBSTANCE: two parallel interjoined platforms 4 and 5 in the form of discs are rigidly installed in crystallizing tank. Distance between platforms 4 and 5 is established by required thickness of grown crystal 6 and is operational zone of facility into which salt solution 2 is injected with use of submersible centrifugal pump also mounted in crystallizing tank for rotation around its central axis that is aligned with vertical axis passing through centers of platforms 4 and 5. One platform, for example platform 4, carries seed unit presenting groove 11 made in platform 4 which bottom is datum surface for primary seed 9 cut in parallel with working surface of platform 4. Through hole 18 which diameter is under 1.0 mm is additionally made in platform 4 for secondary ( working ) seed of very small size linking above-mentioned groove 11 and operational zone of facility. EFFECT: provision for growing of oriented large crystal on very small point seed. 3 cl, 3 dwg