Lgs Crystal Q-Switch Crystals
LGS(La 3 Ga 5 SiO 14 )is a multifunctional intraocular crystal that can be used as an electro-optic crystal after consid
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Basic Info
Specification | customized |
Trademark | optu |
Origin | Chengdu |
HS Code | 9001909090 |
Production Capacity | 5000 Pieces / Year |
Product Description
LGS(La3Ga5SiO14 )is a multifunctional intraocular crystal that can be used as an electro-optic crystal after considering and studying the interaction between electro-optic effect and optical rotation in functional crystals. The LGS electro-optic Q switch passes light along the Z direction of the crystal and applies an electric field along the X direction, which can make full use of the lateral electro-optic effect of the crystal to realize the Q-switch function of the LGS crystal. The electro-optic Q-switch made by LGS is actually a new kind of rotation-electro-optical Q-switch. Because of the effect of optical rotation, it can be used as a practical switch and a good Q-modulation result can be obtained. LGS crystal widens the new direction of exploring and discovering new electro-optic crystals from optically active crystals.
Material and Specifications
Point group | 32 |
Airborne group | P32I |
specific resistance | 4.0×1012Ω/cm-1 |
Thickness | 0.13-0.5mm |
Diameter | 50mm |
Length | 90-100mm |
Melting point | 1470ºC |
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 | ε11=18.27 |
ε33=55.26 | |
Electro-optical coefficients | γ11=2.3×10-12m/V |
γ33=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 | α11=5.15×10-6K-1 |
α33=3.65×10-6K-1 |
Maximum operating frequency | 50KHz |
Maximum output power | 7.5W |
Pulse width | 46ns |
Energy output -40ºC | 155mJ |
Energy output +50ºC | 163mJ |
Room temperature energy output | 167mJ |
Electro-optic conversion efficiency | 1.26% |
Propertie | Quartz | LGS | Li2B4O7 | LiTaO3 |
Electromechanical Coupling Factor K, %(BAW) | 7 | 15.8 | 24 | 47 |
Frequency Spacing Δf, % | 0.25 | 0.9 | 4 | 7 |
Q-Factor Q, ×103 | 100 | 50 | 10 | 2 |
Temperature Frequency Coefficient TFC,×10-6/ºC | 0.5 | 1.6 | 6 | 4 |
Properties | Quartz | LGS |
Density, g/cm³ | 2.65 | 5.746 |
SAW Velocity Vef, m/s | (0°, 132.75°, 0°) | (0°, 140°, 25°) |
3157 | 2756 | |
Electromechanical coupling factor K2emc, %(SAW) | 0.14 | 0.36 |
Second order temp. coef.α2, ×10-8/ºC | -3.2 | -6.8 |
Temp. Coef. TTO, ºC | 25 | 23 |
Dielectric Constant e | 4.92 | 27 |
Power flow angle , ° | 0 | 0.5 |
Constant | Relative Dielectric Constant | Piezoelectric Constant (pC/N) | Elastic Stiffness(1011 Pa) | |||||||
ε11 | ε33 | d11 | d14 | c11 | c12 | c13 | c14 | C33 | C44 | |
Value | 18.96 | 50.19 | 5.66 | -5.48 | 1.898 | 1.058 | 1.022 | 0.144 | 2.626 | 0.535 |
First Order Temp. Coef.(10-6·K-1) | 150 | -760 | 329 | -342 | -66 | 204 | -75 | -335 | -94 | -63 |
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