提拉法生长平肩同成分铌酸锂晶体的研究

秦娟, 梁丹丹, 孙军, 杨金凤, 郝永鑫, 李清连, 张玲, 许京军

Flat Shoulder Congruent Lithium Niobate Crystals Grown by the Czochralski Method

QIN Juan, LIANG Dandan, SUN Jun, YANG Jinfeng, HAO Yongxin, LI Qinglian, ZHANG Ling, XU Jingjun

Table 1 Growth parameters of flat shoulder CLN

Crystal CLN-N1 CLN-N2 CLN-Y1 CLN-Y2 CLN-Y3 Fe:CLN-Y4 Er:CLN-Y5 Distance between after-heater and crucible/mm 20 20 10 10 10 10 10 Time of shouldering/min - 200 720 540 320 310 370 Rotation rate/(r·min-1) 6 6 7 7 7 7 7 Range of reducing pulling rate/(mm·h-1) 1.5-0 1.5-0 1.5-0 1.5-0 1.5-0 1.5-0 1.5-0 Decrement of pulling rate each step/(mm·h-1) 0.5 0.3 0.3 0.2 0.2 0.2 0.2 Interval of reducing pulling rate/min 20 20 15 10 10 10 10 Range of lifting pulling rate/(mm·h-1) 0-1.5 0-1.5 0-1.5 0-1.5 0-1.5 0-1.5 0-1.5 Increment of pulling rate each step/(mm·h-1) 0.2 0.2 0.2 0.2 0.2 0.2 0.2 Interval of lifting pulling rate/min 20 20 13 15 13 15 10