UV Fused Silica Windows for Deep-UV Applications
Deep-UV Transmission | Ultra-Low Thermal Expansion | Laser-Grade Purity
- Exceptional UV Transmission: Manufactured from high-purity UV Grade Fused Silica (equivalent to JGS1 or Corning 7980), these windows deliver outstanding optical transmission deep into the ultraviolet spectrum, functioning effectively down to 185nm without solarization or darkening.
- Extreme Thermal Stability: Features an incredibly low Coefficient of Thermal Expansion (CTE), allowing the window to withstand severe thermal shocks and high-energy laser irradiation without distorting the optical wavefront or fracturing.
- Laser-Grade Surface Quality: Polished to precision tolerances with minimal bubbles and inclusions. Available with surface qualities up to 10-5 Scratch-Dig, ensuring minimal scattering and absorption in high-power UV laser systems.
- 100% Export Compliant: Engineered exclusively for commercial and civilian instrumentation. Completely Germanium-free and ITAR-free, ensuring a restriction-free, stable global supply chain for your analytical and automation equipment.
Technical Specifications
| Technical Parameter | Specification |
|---|---|
| Substrate | UV Grade Fused Silica (JGS1 / Corning 7980 equivalent) |
| Dimensions | Custom (Round, Square, Rectangular, or Stepped Geometries) |
| Dimensional Tolerance | ±0.1mm (Standard) / ±0.02mm (High Precision) |
| Surface Quality | 40-20 (Standard) to 20-10 Scratch-Dig (Laser Grade)(Precision) |
| Surface Flatness | < λ/4 to λ/10 @ 632.8nm |
| Parallelism | < 3 arc minutes (Standard) / < 10 arc seconds (Precision) |
| Transmission Range | 185nm to 2.1µm (Uncoated) |
| Coating | Uncoated, Narrowband UV-AR (e.g., 266nm, 355nm), or Broadband UV-VIS |
| Clear Aperture | > 90% of central dimension |
Product Overview
Built for High-Energy UV Systems
Standard glass absorbs UV light and degrades over time. UV Fused Silica is the premier choice for systems operating in the ultraviolet spectrum. These windows provide a pristine physical barrier for sensitive spectrometer optics, fluorescence microscopy sensors, and UV curing systems, ensuring maximum signal throughput without degradation.
Low Thermal Expansion, High Stability
In environments involving high-power lasers or rapid temperature fluctuations, optical components must remain dimensionally stable. The ultra-low thermal expansion of UV Fused Silica ensures that your optical path remains perfectly aligned and free of thermally induced aberrations, maintaining the highest levels of metrology accuracy.
Reliable, Risk-Free Supply
We understand the importance of supply chain stability in B2B manufacturing. By strictly focusing on civilian-use instrumentation and explicitly avoiding export-restricted materials like Germanium, our export processes are streamlined. We provide uninterrupted, globally compliant optical components direct to your factory floors and third-party assembly lines.
Metrology & Performance Reports
Figure 1: UV Fused Silica Window Transmittance
Demonstrates an exceptional >99.5% average transmittance across the UV-to-NIR spectrum with our custom BBAR coating, significantly outperforming the uncoated JGS1 reference.
Figure 2: Fused Silica Window Surface Flatness
Demonstrates a precise PV 0.213λ (< λ/4 standard), ensuring minimal wavefront distortion for high-end UV laser and analytical systems.
Metrology Analysis & Application Fit
- Target Wavelength: Optimized for Deep-UV (185nm – 300nm) and Near-UV (300nm – 400nm) spectrums, while maintaining excellent visible and near-infrared transmission.
- Performance Index: High-purity silica composition guarantees minimal internal scattering and absorption, which is critical for preventing laser-induced damage (LIDT) in high-energy applications.
- Mechanical Precision: High-tolerance CNC shaping and edge grinding ensure a perfect, stress-free drop-in fit for your specific instrument housings or vacuum flanges.
- Primary Applications: Ideal for UV laser processing, fluorescence spectroscopy, semiconductor wafer inspection, analytical chemistry instrumentation, and medical/biomedical diagnostic equipment.
Custom Sub-Assembly & Engineering Services
Off-the-shelf windows don’t always fit specialized OEM hardware. We specialize in bridging the gap between raw optical components and final instrument assembly. Whether you need custom V-coat Anti-Reflection (AR) coatings tailored to specific Nd:YAG laser harmonics (266nm, 355nm), precision chamfering, or specific surface flatness testing, our technical team is ready to optimize your high-precision systems.