Ultraviolet Fused Silica Window Plate

UItraopto Precision Optics Co. Ltd ultraviolet fused silica window sheets have laser-grade surface quality and parallelism, which can limit the transmission wavefront distortion to λ/10.

UItraopto can provide a variety of laser/protection/window frames made of different quartz materials. Optical Windows with a single or multi-layer anti-reflective coating can be customized according to customer requirements in specific sizes and materials.

UItraopto can stably provide this type of product through precise control of polishing, coating and bonding processes, and accepts custom window sheets of various specifications.

Coning 7980-KRF grade

Coning 7980-ARF class

Kohara quartz from Japan, Kohara microcrystalline glass

ZERODUR Schott microcrystalline

Ultraopto’s Ultraviolet (UV) Fused Silica Window Plate is a high-purity optical component engineered for exceptional performance in deep UV, visible and near-infrared spectral ranges, serving as a core part in UV laser systems, semiconductor manufacturing, aerospace sensors and scientific instrumentation. Crafted from high-purity fused silica (JGS1 grade, equivalent to Corning 7980 and SCHOTT SUPRASIL 3001) with extremely low metallic impurity levels (Fe <1ppm), our window plate delivers a broad spectral transmission range from 180nm (deep UV) to 2500nm (near IR), with transmittance exceeding 90% in the deep UV range, ensuring minimal light absorption and maximum energy utilization for UV-based optical systems. The material’s low OH⁻ content (dry structure) reduces UV absorption and aging, extending the component’s service life in long-term UV exposure applications.

Manufactured with advanced precision grinding, polishing and cleaning processes, our UV Fused Silica Window Plate achieves superior surface quality with a 60/40 scratch-dig rating and ultra-strict flatness control (<λ/10 @633nm), minimizing light scattering and wavefront distortion for high-precision optical systems. The window plate features tight dimensional tolerance control (±0.1mm for diameter, ±0.2mm for thickness) and excellent parallelism (<1 arc minute), ensuring seamless integration into complex optical setups and consistent performance across the entire clear aperture (>90%). With a low thermal expansion coefficient (5.7×10⁻⁶/°C) and high temperature resistance (up to 1050°C), it exhibits minimal dimensional change under temperature fluctuations, making it ideal for high-temperature environments and applications requiring thermal stability, such as laser cavities and industrial processing equipment.

The UV Fused Silica Window Plate is highly durable and resistant to chemical corrosion, thermal shock and mechanical abrasion, ensuring long-term stable operation in harsh industrial environments and frequent handling. We offer both uncoated and anti-reflection (AR) coated options, with AR coatings optimized for specific UV wavelengths or broad spectral ranges to reduce surface reflection loss from approximately 8% to below 1% per surface, significantly enhancing system efficiency. Standard sizes cover a wide range of diameters and thicknesses, and fully custom dimensions, shapes (circular, rectangular, special-shaped) and mounting configurations are available to meet diverse optical system requirements. The material’s high laser-induced damage threshold also makes it suitable for high-power UV laser applications, including excimer lasers and pulsed UV systems.

As a leading manufacturer of high-purity fused silica optical components, Ultraopto offers fully customized UV Fused Silica Window Plate solutions to meet your unique optical application requirements. Our professional R&D and engineering team can tailor the material purity, surface quality, flatness, dimensions and optional coatings to match your specific system design, with ultra-strict tolerance control for high-precision applications such as semiconductor lithography. We also provide custom homogeneity optimization (refractive index variation below ±1×10⁻⁶) for large-aperture applications and advanced polishing techniques to achieve scratch-dig specifications as fine as 10-5 for high-power laser systems. 

All custom window plate orders undergo multi-stage strict optical performance testing and quality inspection, including transmittance measurement, surface roughness testing, flatness verification and thermal stability testing, with a detailed quality inspection report provided to ensure the final product fully complies with your design specifications and application needs. Backed by advanced fused silica processing technology, a complete quality control system and stable batch supply capacity, Ultraopto is committed to providing global customers with high-quality UV Fused Silica Window Plate products and one-stop deep UV optical solutions. For more detailed technical parameters, product quotation information or custom design solutions for our Ultraopto Ultraviolet Fused Silica Window Plate, please contact our professional sales and technical team through the official website, and we will provide you with efficient, professional and personalized optical solutions to support the development and production of your high-precision optical systems.