8-500mm thick UV transparent fused silica substrate is a high-purity synthetic quartz material, which has excellent ultraviolet (UV) light transmittance (185nm~2500nm), extremely low thermal expansion coefficient, excellent high temperature resistance (>1000 ℃) and chemical stability. This product is suitable for harsh environments such as high-precision optical systems, laser equipment, and semiconductor manufacturing. It can provide standard thicknesses (8mm, 10mm, 20mm, etc.), as well as ultra thick (up to 500mm) or ultra-thin (customizable) specifications, to meet the special needs of different industries.

What core needs does this substrate address for users?

For users engaged in UV optical system design, semiconductor equipment support, laser system integration, or precision instrument manufacturing, selecting a substrate material with stable transmittance in the UV spectrum, minimal thermal deformation, and strong chemical resistance directly impacts the imaging quality of optical systems, the operational stability of equipment, and long-term reliability. The 8–500 mm thick UV-transparent fused quartz substrate is specifically designed to address these needs—it ensures efficient UV light transmission through high-purity materials, mitigates deformation challenges caused by temperature changes with its low thermal expansion properties, and adapts to different equipment structures and installation requirements through flexible customization capabilities, helping customers achieve a better material match and lower post-installation adjustment costs during the material selection process.

Key features and advantages

High UV transmittance: The transmittance in the 185nm~2500nm wavelength range is>90%, suitable for deep ultraviolet (DUV) and far ultraviolet (VUV) applications.

High temperature resistance and thermal stability: capable of withstanding temperatures above 1000 ℃, with an extremely low coefficient of thermal expansion (5.5 × 10 ⁻⁷/℃), ensuring no deformation in high-temperature environments.

Chemical inertness: resistant to strong acid and alkali corrosion, suitable for harsh environments such as semiconductor etching and chemical sensors.

High mechanical strength: high hardness (Mohs 7), scratch resistance, suitable for long-term use.

Low fluorescence background: High purity material (SiO ₂ ≥ 99.99%), reduces optical interference, suitable for precision spectral analysis.

Typical application areas

laser optical system

-Solution: High power lasers (such as CO ₂ laser and excimer laser) are easy to damage ordinary glass, and fused silica substrate is resistant to high temperature and laser damage, ensuring long-term stable operation of optical system.

-Applicable specifications: Thickness 10-100mm, surface polished to a precision of λ/10, optional anti reflective film (AR coating).

Semiconductor and Lithography Technology

-Solution: The lithography machine requires highly transparent UV materials, and the quartz substrate can be customized with an ultra flat surface (roughness<1nm) to avoid light scattering affecting process accuracy.

-Applicable specifications: Thickness of 8-50mm, square or circular, can be coated with anti reflection film (DUV/VUV band).

UV sterilization and medical equipment

-Problem solved: UV-C (254nm) sterilization equipment requires a high transmittance window, quartz substrate without bubbles or impurities, to ensure sterilization efficiency.

-Applicable specifications: Thickness of 5-20mm, can be packaged as a sterilization chamber observation window or lamp protection cover.

Research and Spectral Analysis

-Solution: Fluorescence spectroscopy and Raman spectroscopy require low background interference, while high-purity quartz substrates reduce signal noise.

-Applicable specifications: Thickness of 8-500mm, customizable for transmissive or reflective optical components.

Customized service

Customization of size and shape

-Thickness range: 8~500mm (ultra thick can be processed, ultra-thin can reach 0.1mm).

-Shape: circular, square, rectangular, irregular (such as circular, polygonal).

-Dimensional tolerance: ± 0.1mm (standard), high-precision requirements can be ± 0.01mm.

Surface treatment and coating

-Polishing grade: conventional (60-40), precision (20-10), high-precision (λ/10 or λ/20).

-Coating options: anti reflective film (AR), reflective film (HR), spectral film, corrosion-resistant film.

Special processing requirements

-Chamfering/Sloping: prevents edge cracking and facilitates installation.

-Drilling/slotting: used for mechanical fixation or integration of optical systems.

-High pressure resistant design: suitable for vacuum or high-pressure environments (such as aerospace and nuclear industries).

Frequently Asked Questions (FAQ)

Q1: What are the optical properties of this substrate in the deep ultraviolet (DUV) wavelength range?

Our UV fused quartz substrates offer excellent transmittance across the 185 nm to 2100 nm wavelength range and exhibit no fluorescence in the deep ultraviolet region, making them suitable for lithography, laser transmission, and high-energy optical systems. For high-end applications, we offer UV-grade synthetic quartz to meet more stringent requirements for transmittance and uniformity.

Q2: What is the significance of the 8–500 mm thickness range for customization?

This wide thickness range is designed to address the structural requirements of various applications. Thin substrates (e.g., 8–20 mm) are suitable for high-precision optical windows and thin-film circuit substrates; thick substrates (e.g., 50–500 mm) are used for structural components in semiconductor equipment or protective components in high-power laser systems, providing higher mechanical strength and thermal stability.

Q3: How do you handle requests for non-standard dimensions or special shapes?

We offer customization services based on customer drawings. Whether circular, square, polygonal, or irregularly shaped parts requiring complex features such as drilling, slotting, or chamfering, we can achieve high-tolerance precision through CNC machining and laser cutting technologies.

Q4: What levels of surface quality and flatness can be achieved?

Standard products can achieve a surface quality of 20/10 for scratches and pits, with surface flatness better than λ/10 @ 633 nm. High-precision polishing can be applied upon request to ensure consistency and stability in optical performance.

8-500mm thick UV transparent fused silica substrate, with its excellent optical performance, extreme environmental resistance and flexible customization services, has become an ideal choice for high-precision optical systems. We can provide professional level solutions for laser processing, semiconductor manufacturing, and scientific research experiments.

Provide drawings or technical requirements to obtain customized solutions and quotations!

Luverre Quartz manufactures and sells a wide range of high quality quartz glass, including quartz tubes, quartz plates, quartz rods, quartz windows, quartz crucibles, quartz boats, quartz flanges, quartz beakers, quartz glass instruments, and more. We can meet all kinds of customized requirements for quartz glass products.