Description
Quartz Substrates
Ultraviolet fused silica has a high transmittance from ultraviolet to near-infrared (185-2100nm), and it is an ideal choice for applications in the ultraviolet to near-infrared wavelength range. In addition, compared with H-K9L (N-BK7), UV fused silica has better uniformity and lower thermal expansion coefficient. We provide uncoated and coated high-precision windows, and customers can also customize the size and coating.
Specification:
|
Material |
Synthetic fused silica, JGS1 |
|
Dimension (mm) |
As required |
|
Dimension Tolerance (mm) |
+0.0/-0.1 |
|
Clear Aperture |
≥90% |
|
Thickenss (mm) |
1 |
|
Thickness Tolerance (mm) |
+/-0.1 |
|
Parallelism |
≤1′ |
|
Surface Flatness |
λ/4@633nm |
|
Surface Quality |
20/10 |
|
Bevel |
0.2×45° |
|
Coating |
As required |
China Optical Quartz Glass Grade
|
Name |
Corresponding grade |
Feature |
|
Far Ultraviolet Optical Quartz Glass |
JGS1 |
Transparent in the ultraviolet and visible spectrum; no absorption band in the 185-250nm band; strong absorption band in the 2600-2800nm band; non-luminous, stable light radiation. |
|
UV optical quartz glass |
JGS2 |
Transparent in the ultraviolet and visible spectrum; no absorption band in the 200-250nm band; strong absorption band in the 2600-2800nm band; non-luminous, stable light radiation |
|
Infrared optical quartz glass |
JGS3 |
Transparent in the visible and infrared spectrum; no obvious absorption band in the 2600-2800nm band; |
Optical properties of quartz glass
|
Wavelength |
Transmittance% |
||
|
nm |
Synthetic quartz glass |
Fused Quartz glass |
Infrared quartz glass |
|
170 |
50 |
10 |
0 |
|
180 |
80 |
50 |
3 |
|
190 |
84 |
65 |
8 |
|
200 |
87 |
70 |
20 |
|
220 |
90 |
80 |
60 |
|
240 |
91 |
82 |
65 |
|
260 |
92 |
86 |
80 |
|
280 |
92 |
90 |
90 |
|
300 |
92 |
91 |
91 |
|
320 |
92 |
92 |
92 |
|
340 |
92 |
92 |
92 |
|
360 |
92 |
92 |
92 |
|
380 |
92 |
92 |
92 |
|
400-2000 |
92 |
92 |
92 |
|
2500 |
85 |
87 |
92 |
|
2730 |
10 |
30 |
90 |
|
3000 |
80 |
80 |
90 |
|
3500 |
75 |
75 |
88 |
|
4000 |
55 |
55 |
73 |
|
4500 |
15 |
25 |
35 |
|
5000 |
7 |
15 |
30 |
The Main Properties of Quartz Glass:
Mechanical properties
Quartz glass is a brittle material with low tensile strength and high compressive strength. The latter is 20 times that of the former.
Thermal performance
Quartz glass has a very low coefficient of linear expansion, very good resistance to thermal vibration, and is a poor conductor of heat.
Optical performance
An important difference between quartz glass and ordinary glass is its good transmittance in the entire spectrum, especially in the ultraviolet and deep ultraviolet spectrum, which is not available in ordinary optical glass.
Electrical performance
The main electrical properties of quartz glass are high dielectric electric field strength, low dielectric loss and low conductivity.
Chemical properties
Quartz glass is a material with very good chemical stability and does not react with water, salt solutions and most acids.
Radiation resistance
Compared with ordinary glass, quartz glass has excellent radiation resistance. Among them, synthetic quartz glass has the best radiation resistance and hardly produces color centers.
