US 12,378,690 B2
Method for growing long-seed DKDP crystal by two-dimensional motion
Duanyang Chen, Shanghai (CN); Mingwei Li, Shanghai (CN); Hongji Qi, Shanghai (CN); Jianda Shao, Shanghai (CN); Bin Wang, Shanghai (CN); Hang Liu, Chongqing (CN); Huawei Yin, Chongqing (CN); and Chuan Zhou, Chongqing (CN)
Assigned to Shanghai Institute of Optics And Fine Mechanics, Chinese Academy of Sciences, Shanghai (CN); and Chongqing University, Chongqing (CN)
Filed by Shanghai Institute of Optics And Fine Mechanics, Chinese Academy of Sciences, Shanghai (CN); and Chongqing University, Chongqing (CN)
Filed on Mar. 23, 2023, as Appl. No. 18/189,054.
Application 18/189,054 is a continuation of application No. PCT/CN2021/111693, filed on Aug. 10, 2021.
Claims priority of application No. 202110341818.X (CN), filed on Mar. 30, 2021.
Prior Publication US 2023/0227995 A1, Jul. 20, 2023
Int. Cl. C30B 7/00 (2006.01); C30B 29/16 (2006.01)
CPC C30B 7/00 (2013.01) [C30B 29/16 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A method for growing a long-seed DKDP crystal by two-dimensional motion, comprising:
mounting a two-dimensional motion motor on an upper part of a growth tank and connecting a lower end of the two-dimensional motion motor to a connecting rod of a crystal carrying frame,
placing a long-seed DKDP crystal on the crystal carrying frame,
driving the crystal carrying frame with the long-seed DKDP crystal to periodically translating on a horizontal plane according to a square motion track in a growth solution in the growth tank by the two-dimensional motion motor in a motion mode, and
growing the long-seed DKDP crystal along all cylindrical surfaces in the growth tank to obtain a DKDP crystal with no quality restriction of a cylinder-cone interface until growth of the long-seed DKDP crystal ends,
wherein the motion mode is performing uniformly accelerated linear motion at an acceleration velocity a from 0—maintaining a uniform linear motion after a velocity reaches V—performing uniformly decelerated linear motion at an acceleration a until the velocity decreases to 0 on all four sides of the square motion track,
the accelerated velocity a of the uniformly accelerated linear motion is in a range of 0.01 to 1 m/s2, and the velocity V of the maintained uniformly linear motion is in a range of 0.01 to 1 m/s.