Material and Specifications
Point group | 32 |
Airborne group | P32I |
specific resistance | 4.0×1012/cm-1 |
Thickness | 0.13-0.5mm |
Diameter | 50mm |
Length | 90-100mm |
Melting point | 1470℃ |
Density | 5.67g/cm3 |
Mohs hardness | 5.5 |
Thermal expansion coefficient | aa=16×10-6/K, ac=4×10-6/K |
Photo damage threshold | 670MV/cm2 |
Cell Parameters | a=b=0.8162nm,c=0.5087nm |
Dielectric constant | 11=18.27 |
33=55.26 | |
Electro-optical coefficients | 11=2.3×10-12m/V |
33=1.8×10-12m/V | |
Piezoelectric strain constant (10-12)C/N |
d11=6.3 |
d14=-5.4 | |
Phase velocity,m/s | 2750~2850 |
Electromechanical coupling coefficient, K[ %] | 0.28~0.46 |
Solubility | None |
Coefficient of thermal expansion | 11=5.15×10-6K-1 |
33=3.65×10-6K-1 |
LGS crystal for Q-switch
Maximum operating frequency | 50KHz |
Maximum output power | 7.5W |
Pulse width | 46ns |
Energy output -40℃ | 155mJ |
Energy output +50℃ | 163mJ |
Room temperature energy output | 167mJ |
Electro-optic conversion efficiency | 1.26% |
Comparative properties of piezoelectric crystals
Crystal Propertie |
Quartz | LGS | Li2B4O7 | LiTaO3 |
Electromechanical Coupling Factor K, %(BAW) | 7 | 15.8 | 24 | 47 |
Frequency Spacing f, % | 0.25 | 0.9 | 4 | 7 |
Q-Factor Q, ×103 | 100 | 50 | 10 |