High-Purity Fused Silica Window Quartz Crystal Glass Diameter 35.04mm Thickness 2.95mm

This quartz wafer is manufactured from high-purity silicon dioxide (SiO₂ ≥ 99.99%) and exhibits exceptional physicochemical stability, making it suitable for high-frequency, high-precision electronic devices and optical systems. Its dimensions (35.04mm diameter, 2.95mm thickness) balance mechanical rigidity and frequency stability, meeting the demands of compact, high-performance precision instruments.
ZMSH's Business Expansion:
In addition to custom sapphire products, our company offers comprehensive quartz material processing services, including quartz wafers, quartz boats, quartz tubes/rods, and quartz optical windows. These products serve diverse sectors such as semiconductors, optoelectronics, and medical devices. Examples include:
- Quartz Wafers: Used as carriers for semiconductor wafers and photolithography mask substrates.
- Quartz Optical Windows: Applied in lasers and fiber-optic communication systems as infrared/ultraviolet-transmitting components.
- Quartz Tubes/Rods: Utilized in high-temperature reaction vessels and optical instrument light-guiding components.
Fused Quartz Windows Key Characteristics
1. Intrinsic Properties of the Quartz Wafer

- Piezoelectric Effect: Mechanical stress applied along the X/Y-axis generates charge (reverse piezoelectric effect), while an external electric field induces deformation. This principle underpins the fabrication of resonators and filters.
- High Transmittance: Fused quartz windows visible light transmittance >85%, with excellent transmission in the ultraviolet range (185–250 nm), ideal for optical detection and laser systems.
- High-Temperature Resistance: Fused quartz windows long-term operational temperature up to 1,100°C; short-term tolerance up to 1,450°C. Low thermal expansion coefficient (~5.5×10⁻⁷/°C) ensures stability in high-temperature environments.
- Chemical Stability: Fused quartz windows resistant to strong acids (except hydrofluoric acid), outperforming ceramics and metals in corrosion resistance.
2. Dimensional Design Advantages
- Thickness of 2.95mm: Fused quartz windows optimized ratio of thickness to diameter balances mechanical rigidity and frequency stability, suitable for precision oscillators (e.g., TCXO, VCXO).
- Diameter of 35.04mm: Fused quartz windows large size minimizes edge effects and enhances optical uniformity, ideal for large-area optical windows or wafer-level processing.
Fused Quartz Windows Key Applications
1. Communications & Electronics
- High-Frequency Resonators/Oscillators: Generate stable frequency signals via piezoelectric effects, fused quartz windows used in 5G base stations, satellite communications, and radar systems.
- Filters: Selective signal filtering through precise cutting (e.g., AT-cut, SC-cut) improves anti-interference capabilities in communication devices.
2. Optics & Laser Technology
- Laser Cavity Mirrors: Fused quartz windows serve as reflective mirrors in laser resonators to stabilize beam modes.
- Fiber-Optic Connectors: Enable low-insertion-loss coupling at fiber ends (e.g., SC/APC interfaces).
3. Industrial & Scientific Instruments
- Spectrometers: Fused quartz windows act as dispersive elements to isolate specific wavelengths (e.g., UV-vis spectrophotometers).
- High-Temperature Sensors: Monitor temperatures in molten metals or chemical reactions leveraging thermal resilience.
4. Medical Devices
- Medical Imaging Systems: Optical components in MRI and CT scanners for high-resolution imaging.
- Biological Assay Instruments: Fused quartz windows as transparent substrates for optical detection modules to enhance sensitivity.


Recommended Fused Quartz Parts
2. Fused Quartz Glass Heat & Corrosion Resistant High Transparency Custom Shapes JGS1/JGS2

Fused Quartz Windows Q&A
Q1: What is the maximum temperature resistance of high-purity fused silica glass windows?
A1: Short-term resistance up to 1,450°C, long-term operational temperature up to 1,100°C, with a low thermal expansion coefficient of 5.5×10⁻⁷/°C, making it ideal for high-temperature environments.
Q2: What is its role in laser systems?
A2: Serves as laser cavity mirrors or fiber-optic connectors, providing low insertion loss (e.g., SC/APC interfaces) and minimizing thermal stress-induced scattering.
Tags: #High-Purity Fused Silica Window, #Quartz Crystal Glass, #Optical Components, #Tubular Optical Component, #Diameter 35.04mm, # Thickness 2.95mm, #High-purity fused silica (SiO₂ ≥ 99.99%)