Custom Infrared (IR) Fused Silica Windows
UV fused silica windows feature low distortion, excellent parallelism, low bulk scattering, and high-quality surface finish.
- Ultra-low bulk scattering and autofluorescence
- Available in high flatness (Λ/20) or standard flatness (Λ/10)
- Parallelism < 30 arcseconds
Infrared (IR) Fused Silica Windows are high-quality optical windows made from synthetic fused silica.
They are designed for applications requiring excellent transmission in the ultraviolet (UV), visible, and infrared (IR) spectrum.
Also, these windows feature outstanding thermal and mechanical properties, making them an ideal choice for demanding optical systems and laser applications.
| Material: | Fused Silica |
| Clear Aperture (%): | 90 |
| Surface Quality: | 20-10 |
| Surface Flatness: | 1-2 Fringes (@633nm) per 25mm dia |
| Coating: | Optional |
What is the IR Transmission of Fused Silica?
Fused silica is an excellent optical material that provides very high transmission in the UV, visible, and part of the infrared (IR) spectrum.
- UV: ~180 nm
- Visible: Excellent transmission
- Infrared (IR): Typically up to about 3.5 μm (depending on grade and OH content)
Advantages of the Windows
- Wide Transmission Range
- Low Thermal Expansion
- High Laser Damage Threshold
- Excellent Surface Quality
- Durability
Why choose Fused Silica Window?
It has high transmittance and low absorption rate over a wide wavelength range.
At the same time, it can still maintain stable performance under extreme environments and high temperatures.
Chenyu experienced design team provides customers with support for optical system design, ranging from the initial design stage to prototype development and production.
Also, the customization options may include specific coating wavelengths or other requirements to meet the unique needs of the customer’s application.
Therefore, if you need it, please contact us at any time.







