Fused Silica Optics Co.,LTD
Fused Silica Optics Co.,Ltd
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UV Fused Silica/Quartz Plate Glass Sheets
Quartz plate is based on UV synthetic fused silica,which shows better performance from UV to IR spectrum than BK7 material. Also, it is the best choice in terms of thermal stability. In addition to superior transmission characteristics, fused silica exhibits higher thermal properties, exceptional purity, and excellent environmental durability for applications.
Specification
| Material | fused silica or JGS1,JGS2,JGS3 |
| Diameter tolerance | +/-0.1 mm |
| Thickness tolerance | +/-0.1 mm |
| Clear Aperture | >90% |
| Parallelism | 3 arc minutes |
| Surface Quality | 40/20 scratch and dig |
| Surface irregularity | λ/4 (at) 632.6nm |
| Protective Bevel | 0.25x45° |
Features:low cost, low thermal coefficient of expansion, better thermal stability, superior properties of transmission, mechanics and optics.
Applications:Electrics, precision optics, laser equipments,optics communication, emitter/detector protection devices (such as in spectrophotometers), and imaging systems etc.
Transmission Curve for JGS1,JGS2 and JGS3
Ultraviolet Grade Fused Silica: JGS1 (China), equivalent to Suprasil 1 and 2 (Heraeus), Spectrosil A and B (Saint-Gobain) and Corning 7940 (Corning), Dynasil 1100 and 4100 (Dynasil).
Optical Grade Fused Quartz: JGS2 (China), equivalent to Homosil 1, 2 & 3 (Heraeus), Dynasil 1000 & 4000 and 5000 & 6000 (Dynasil)
IR grade Fused Silica: JGS3 (China), equivalent to Suprasil 300 (Heraeus).
Difference properties
|
Parameter
|
JGS1
|
JGS2
|
JGS3
| |
|
Maximum Size
|
<φ200mm
|
<φ300mm
|
<φ200mm
| |
|
Transmission Range
|
0.17~2.10um
|
0.26~2.10um
|
0.25~3.50um
| |
|
OH- Content
|
1200 ppm
|
150 ppm
|
5 ppm
| |
|
Fluorescence (ex 254nm)
|
Virtually Free
|
Strong v-b
|
Strong V-B
| |
|
Impurity Content
|
5 ppm
|
20-40 ppm
|
40-50 ppm
| |
|
Birefringence Constant
|
2-4 nm/cm
|
4-6 nm/cm
|
4-10 nm/cm
| |
|
Melting Method
|
Synthetic CVD
|
Oxy-hydrogen melting
|
Electrical melting
| |
|
Applications
|
Laser substrate: Window, lens, prism, mirror...
|
Semiconductor and high temperature window
|
IR substrate
| |
Same Properties
|
Density |
2.20g/cm3
| |||
|
Abbe Constant |
67.6
| |||
| Refractive Index (nd) at 588nm |
1.4586
| |||
|
Wavelength (um)
|
Refractive Index (n) |
Wavelength (um) |
Refractive Index (n) | |
| 0.200 | 1.55051 | 1.000 | 1.45042 | |
| 0.220 | 1.52845 | 1.064 | 1.44962 | |
| 0.250 | 1.50745 | 1.100 | 1.44920 | |
| 0.300 | 1.48779 | 1.200 | 1.44805 | |
| 0.320 | 1.48274 | 1.300 | 1.44692 | |
| 0.360 | 1.47529 | 1.500 | 1.44620 | |
| 0.400 | 1.47012 | 1.600 | 1.44342 | |
| 0.450 | 1.46557 | 1.700 | 1.44217 | |
| 0.488 | 1.46302 | 1.800 | 1.44087 | |
| 0.500 | 1.46233 | 1.900 | 1.43951 | |
| 0.550 | 1.46008 | 2.000 | 1.43809 | |
| 0.588 | 1.45860 | 2.200 | 1.43501 | |
| 0.600 | 1.45804 | 2.400 | 1.43163 | |
| 0.633 | 1.45702 | 2.600 | 1.42789 | |
| 0.650 | 1.45653 | 2.800 | 1.42377 | |
| 0.700 | 1.45529 | 3.000 | 1.41925 | |
| 0.750 | 1.45424 | 3.200 | 1.41427 | |
| 0.800 | 1.45332 | 3.370 | 1.40990 | |
| 0.850 | 1.45250 | 3.507 | 1.40566 | |
| 0.900 | 1.45175 | 3.707 | 1.39936 | |
| Hardness | 5.5 - 6.5 Mohs' Scale 570 KHN 100 |
| Design Tensile Strength | 4.8x107 Pa (N/mm2) (7000 psi) |
| Design Compressive Strength | Greater than 1.1x109 Pa (160,000 psi) |
| Bulk Modulus | 3.7x1010 Pa (5.3x106 psi) |
| Rigidity Modulus | 3.1x1010 Pa (4.5x1066 psi) |
| Young's Modulus | 7.2x1010 Pa (10.5x106 psi) |
| Poisson's Ratio | 0.17 |
| Coefficient of Thermal Expansion | 5.5x10-7cm/cm.°C (20°C-320°C) |
| Thermal Conductivity | 1.4 W/m.°C |
| Specific Heat | 670 J/kg.°C |
| Softening Point | 1683°C |
| Annealing Point | 1215°C |
| Strain Point | 1120°C |
| Electrical Receptivity | 7x107 ohm.cm (350°C) |
| Dielectric Properties (20°C and 1 MHz) Constant Strength Loss Factor Dissipation Factor | 3.75 5x107 V/m Less than 4x10-4 Less than 1x10-4 |
| Velocity of Sound-Shear Wave | 3.75x103 m/s |
| Velocity of Sound/Compression Wave | 5.90x103 m/s |
| Sonic Attenuation | Less than 11 db/m MHz |
| Permeability Constants (cm3mm/cm2 sec cm of Hg) Helium Hydrogen Deuterium Neon | (700°C) 210x10-10 21x10-10 17x10-10 9.5x10-10 |
| Chemical Stability (except hydrofluoric) | High resistance to water and acids |