Quartz Crucible
A quartz window is an optical component made from high-purity fused silica (silicon dioxide), featuring exceptional optical clarity and thermal stability. It transmits a broad spectrum from ultraviolet to infrared light, while withstanding high temperatures, resisting thermal shock, and demonstrating excellent chemical durability. It is commonly used in high-temperature observation ports, semiconductor equipment, laser systems, and precision instruments.
- Custom and standard options available.
- Fast lead times guaranteed.
- High performance at a competitive price.
Quartz Window Data Sheet
| Color: | White – transparent |
| Shape: | Customized |
| Dimension (inch): | Customized |
| Chemical Formula: | SiO2 |
Quartz Window Description
A quartz window is a specialized optical component manufactured from high-purity fused silica (amorphous silicon dioxide). Its defining characteristics include high transmittance across a broad spectral range from deep ultraviolet (approximately 185 nm) to near-infrared (approximately 2.5 µm), coupled with a near-zero coefficient of thermal expansion. This grants it exceptional thermal shock resistance and high-temperature stability, allowing it to withstand prolonged exposure above 1000°C while maintaining structural integrity and optical performance. It also possesses high hardness, excellent chemical inertness, and strong resistance to high-energy radiation. These properties make it an indispensable component in extremely demanding environments, such as in semiconductor lithography systems, lasers, high-temperature observation systems, vacuum equipment, and space exploration probes.
Quartz Window Features
- Broad Optical Transmission: Exceptionally high transmittance from deep UV (~185 nm) to near-infrared (~2.5 μm) wavelengths.
- Extreme Thermal Stability: Very low coefficient of thermal expansion provides outstanding resistance to thermal shock and high-temperature operation (often >1000°C).
- High Purity & Chemical Inertness: Made from high-purity fused silica, offering excellent resistance to most acids, water, and corrosive environments.
- Superior Hardness & Durability: High surface hardness provides good scratch resistance and structural integrity in demanding applications.
- Radiation Resistance: Highly resistant to discoloration and damage from high-energy UV, X-ray, or gamma radiation, maintaining clarity.
Quartz Window Applications
- Semiconductor Manufacturing – Used in photolithography systems, etching equipment, and CVD/PVD reactors for observation and UV light transmission.
- Laser Technology – Essential components in laser cavities, optical path systems, and high-power laser protection windows.
- High-Temperature Observation – Industrial furnace viewports, reaction chamber monitoring windows, and combustion analysis systems.
- Scientific Research Equipment – Spectroscopy instruments, vacuum system windows, and particle detection devices.
- Medical & Laboratory Devices – UV sterilization equipment, analytical instrument windows, and medical laser system components.
- Aerospace & Defense – Satellite observation windows, space probe optics, and infrared sensor protection covers.
- Optical Measurement Systems – Interferometer windows, optical sensor protection covers, and precision measurement instrument ports.
- Chemical Processing – Corrosive environment observation ports and reactor system inspection windows.
- Special Lighting – High-power UV lamps, halogen lamp covers, and mercury lamp protection windows.
- Quality Control Systems – Machine vision inspection windows and industrial camera protection covers.
Quartz Ceramic Material Properties
| Purity (%) | >99.8 | >99.5 |
| Density (g/cm3) | 1.9-1.95 | 1.9-1.95 |
| Flexture strength (MPa) | 28 | 28 |
| Compressive strength (MPa) | >50 | >50 |
| Bending strength (MPa) | 25 | 25 |
| Maximum working temperature (℃) | 1650 | 1650 |
| Thermal conductivity (W/m*K) | <1 | <1 |
| Thermal expansion coefficient (/℃) | 8.5*10-7 | 8.5*10-7 |
| number of use | ≥10 | ≥10 |
Quartz Ceramic Packaging
Quartz ceramic products are typically packaged in vacuum-sealed bags to prevent moisture or contamination and wrapped with foam to cushion vibrations and impacts during transport, ensuring the quality of products in their original condition.
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- SAFETY DATA SHEET (SDS) -Quartz Window
FAQ
What is a Quartz Window and what is its core composition?
A Quartz Window is a specialized optical component made from high-purity fused silica (amorphous silicon dioxide).
What are the most outstanding advantages of Quartz Windows?
Its most outstanding advantages are the combination of broad-spectrum high transmittance and extreme high-temperature resistance. It efficiently transmits light from deep UV to near-infrared and can operate stably above 1000°C.
What is special about the "UV transmittance" of Quartz Windows?
It efficiently transmits Deep Ultraviolet (DUV) and even Vacuum Ultraviolet (VUV) light, which ordinary glass cannot. This is crucial for lithography and spectroscopic analysis.
What is the main difference between fused quartz windows and ordinary glass windows?
The main differences lie in thermal properties and spectral transmission range. Fused quartz has an extremely low thermal expansion coefficient, far superior temperature resistance, and transmits UV light.
Why are Quartz Windows so critical in semiconductor equipment?
Due to their high purity, resistance to plasma erosion, stability at high temperatures, and ability to transmit light for process monitoring, they are key components for ensuring chamber sealing, enabling in-situ monitoring, and guaranteeing process consistency.
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