Birefringent Crystal Quartz
Overview:
Single Synthetic Crystal Quartz is grown by hydrothermal method in autoclaves. It has trigonal crystal structure with right-handed or left-handed modification. Quartz crystals have low stress birefringence and high refractive index homogeneity. The optical transmission range of crystal quartz is 0.2-2.5microns. Due to its piezoelectric properties, low thermal expansion, good mechanical parameters and excellent optical characteristics, crystal quartz is widely used in electronics, precision and laser optics, fiber communications, X-ray optics, pressure sensors and etc.
General Specifications Of Crystal Quartz:
Dimension Tolerance |
±0.1mm |
Optical Axis Orientation |
±0.5° |
Surface Quality |
20/10 |
Clear Aperture |
>90% |
Flatness |
<λ/8@633nm |
Transmitted Wavefront Distortion |
<λ/10@633nm |
Parallelism |
Up to 1 arc second |
Coating |
Upon Request |
Physical and Optical Properties of Crystal Quartz:
Transmission Range |
0.150-4.0µm |
Refractive Index |
no=1.5350, ne=1.5438@1µm |
Density |
2.65 g/cm3 |
Melting Point |
1710°C |
Molecular Weight |
60.06 |
Thermal_Conductivity |
|| C: 11.7 W/(m·K) @ 20°C; ⊥C: 6.5 |
Specific Heat |
744 J/(kg·K) |
Thermal Expansion |
|| C: 7.97 x 10-6 /°C ; ⊥C: 13.37 x 10-6 /°C @ 0°-80°C |
Hardness (Mohs) |
7 |
Young`s Modulus |
|| C: 97; ⊥C: 76.5 GPa @ 25°C |
Elastic Coefficient |
C11 = 86.6; C12 = 6.7; C13 = 12.4; C14 = 17.8; C33= 106.4; C44 = 58 GPa |
Dielectric Constant |
|| C: 4.27@30 MHz@25°C; ⊥C: 4.34 |
Solubility in Water |
insoluble |
Type of Material |
Single crystal, synthetic |
Crystal Structure |
trigonal, point group 32, a=4.9138Å, c=5.4052Å |
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