LGS(La3Ga5SiO14)

LGS(La<sub>3</sub>Ga<sub>5</sub>SiO<sub>14</sub>)” class=”wp-image-4260″/></div><div class=

LGS(La3Ga5SiO14)is a multifunctional intraocular crystal that can be used as an electro-optic crystal after considering and studying the interaction between the electro-optic effect and optical rotation in functional crystals. 

The LGS electro-optic Q switch passes light along the Z direction of the crystal. It applies an electric field along the X direction, which can fully use the crystal’s lateral electro-optic effect to realize the LGS crystal’s Q-switch function. 

The electro-optic Q-switch made by LGS is 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.

Crystal Specifications

Orientation±15′
Wavefront Distortion
<λ/8 @633nm
Extinction Ratio
>500:1
Diameter Tolerance+0.00mm/-0.05mm
Length Tolerance±0.2mm
Chamfer
<0.1mm @45°
Flatness
<λ/10 @633nm
Parallelism
<3‘
Perpendicularity
<5’
Surface Finish
10/5
AR Coating<0.3% @1064nm

Crystal Properties

Point Group32
Space Groupp321
Resistivity4.0×1012Ω/cm-1
Thickness0.13-0.5mm
Diameter50mm
Length90-100mm
Melting Point
1470℃
Density
5.67g/cm3
Mohs Hardness
5.5
Damage Threshold
670MV/cm2
Lattice Constant
a=b=0.8162nm,c=0.5087nm
Dielectric Constant
ε11=18.27
ε33=55.26
Electro-optic Coefficient
γ11=2.3×10-12m/V
γ33=1.8×10-12m/V
Piezoelectric Strain Constant(10-12) C/Nd11=6.3
d14=-5.4
Phase Velocity m/s2750~2850
Electro-mechanical Coupling Factor, K (%)0.28~0.46
SolubilityNo
Thermal Coefficient of Expansion
α11=5.15×10-6K-1
α33=3.65×10-6K-1

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