TY - JOUR
T1 - Influence of temperature distribution upon the structure of LiNbO3 crystal rods grown using the LHPG method
AU - Chen, Jyh Chen
AU - Lee, Yeou Chang
N1 - Funding Information:
The authors gratefully acknowledge the support of the National Science Council of Taiwan, ROC for this work, through grant No. NSC 87-2215-E008-005.
PY - 2000/1/1
Y1 - 2000/1/1
N2 - Lithium niobate single-crystal rods, with a diameter from 0.4 to 1.7 mm, were grown along the c-[0 0 0 1] and a-axis [2 1̄ 1̄ 0], both upward and downward, with a pulling speed from 0.5 to 10 mm/min using a laser-heated pedestal growth (LHPG) process. The axial surface temperature distribution during growth was measured. The maximum surface temperature gradient at the axial direction varied slightly with the rod diameter and was nearly invariant with the pulling speed. Crystals without cracks can be grown if the surface temperature gradients are less than the maximum acceptable axial gradient, which is roughly proportional to the diameter D-3/2. During growth, c-axis crystals crack easier than a-axis crystals. Installation of a post heating system facilitates the growth of crystals with larger diameters. The better transparency of the crystal had been grown for higher pulling speed.
AB - Lithium niobate single-crystal rods, with a diameter from 0.4 to 1.7 mm, were grown along the c-[0 0 0 1] and a-axis [2 1̄ 1̄ 0], both upward and downward, with a pulling speed from 0.5 to 10 mm/min using a laser-heated pedestal growth (LHPG) process. The axial surface temperature distribution during growth was measured. The maximum surface temperature gradient at the axial direction varied slightly with the rod diameter and was nearly invariant with the pulling speed. Crystals without cracks can be grown if the surface temperature gradients are less than the maximum acceptable axial gradient, which is roughly proportional to the diameter D-3/2. During growth, c-axis crystals crack easier than a-axis crystals. Installation of a post heating system facilitates the growth of crystals with larger diameters. The better transparency of the crystal had been grown for higher pulling speed.
UR - http://www.scopus.com/inward/record.url?scp=0033896865&partnerID=8YFLogxK
U2 - 10.1016/S0022-0248(99)00426-1
DO - 10.1016/S0022-0248(99)00426-1
M3 - 期刊論文
AN - SCOPUS:0033896865
SN - 0022-0248
VL - 208
SP - 508
EP - 512
JO - Journal of Crystal Growth
JF - Journal of Crystal Growth
IS - 1
ER -