Low OH content JGS1 quartz sheet

The low OH content JGS1 quartz sheet is a ultraviolet optical material made of synthetic quartz glass. Through the vapor deposition process, the content of hydroxyl groups (-OH) is controlled at an extremely low level (<10 ppm), completely eliminating the infrared absorption band near 2700nm, achieving ultra-wide band high transmittance from deep ultraviolet to near-infrared (185-2500nm). It is an ideal window material for laser technology, semiconductor lithography and high-energy detection fields.

Product FAQ: Addressing the Key Optical Application Challenges

Q: When conducting deep ultraviolet spectral analysis, the background noise of ordinary quartz plates is high, resulting in inaccurate detection data. What should we do?

A: The low OH content JGS1 quartz plates have a transmittance of over 90% in the 185nm deep ultraviolet range and have no fluorescence properties. This significantly reduces background interference and ensures that the spectral signals you collect are pure and reliable.

Q: In high-power laser systems, ordinary glass is prone to heating and cracking, or suffers severe energy loss?

A: Our products have extremely low OH content (<10ppm), meaning the material has minimal absorption at specific wavelengths and has a high laser damage threshold. It can withstand high energy density operation without damage, effectively protecting your system's stability.

Q: Need custom non-standard size window plates for vacuum equipment, but worried about insufficient accuracy and air leakage?

A: We offer precise size customization services. From a diameter of 1mm to 500mm, the thickness tolerance can be controlled within ±0.01mm, and the surface finish can reach S/D 20/10, ensuring a perfect match with your equipment and meeting the strict requirements of high vacuum and high pressure environments.

Product application fields

The low OH content JGS1 quartz sheet, with its excellent spectral transmission performance, is widely used in high-end technology and precision manufacturing fields:

- Semiconductor manufacturing: As a mask plate for photolithography machines or a substrate for wafer, ensuring efficient transmission of deep ultraviolet light.

- Laser technology: Used for output windows and internal optical components of excimer lasers (ArF, KrF), capable of withstanding high-energy pulses.

- Scientific research analysis: As a colorimetric window or lens for ultraviolet spectrophotometers and fluorescence spectrometers.

- Aerospace: Used to manufacture high-reliability observation windows or optical sensor protection windows, capable of withstanding extreme temperature fluctuating environments.

Product Core Advantages

1. Ultra-high ultraviolet transmission rate: Using high-purity synthetic raw materials, the transmission rate at 185nm is >90%, which is much better than that of ordinary quartz.

2. Wide-spectrum characteristics due to low hydroxyl content: Precisely controlling the hydroxyl content not only eliminates the infrared absorption peak at 2.7μm, but also enhances the density and uniformity of the material.

3. Outstanding physical and chemical stability: The thermal expansion coefficient is extremely low (5.5×10⁻⁷/℃), with a temperature resistance of up to 1200℃, and resistant to almost all acids (except hydrofluoric acid), ensuring that the material does not deform or age in harsh environments for long-term use.

Customization service for specification dimensions

We understand that standard components are rarely able to perfectly fit your unique design. Therefore, we offer full-size customization services:

- Geometric shapes: circular, square, rectangular, and irregular openings.

- Size range: diameter 3mm - 500mm; thickness 0.1mm - 50mm.

- Processing accuracy: thickness tolerance can reach ±0.01mm; parallelism < 30 seconds; surface finish S/D 10/5.

- Edge treatment: chamfer, Notch groove, positioning edge (according to SEMI standards or customer drawings).

Customer Application Cases

Case 1: Requirements and Solutions of a Deep Ultraviolet Laser Manufacturer

- Customer Requirements: The customer needed a batch of quartz plates for the output window of a 248nm excimer laser, requiring resistance to high energy density (>20J/cm²) without generating color centers. The window size was Φ50.8mm and the thickness was 3mm.

- Our Solution: We provided JGS1 quartz material with low OH content (<5ppm), using ultra-precise double-sided polishing technology to ensure a surface roughness of <0.5nm and wavefront distortion controlled at λ/10 @ 633nm.

- Final Result: In the customer's installation test, the laser damage threshold of this batch of windows increased by 30%, the transmittance remained stable, and there was no any photoabsorption phenomenon. This helped the customer's laser pass the acceptance test smoothly and enter the mass production stage.

Case 2: Upgrade of a Research Institution's Vacuum Ultraviolet Spectroscopy System

- Customer Requirements: When the institution was building a vacuum ultraviolet spectrometer in the 180nm band, the original window plate showed a sharp attenuation of signals below 200nm, making it impossible to accurately detect trace gases.

- Our Solution: We customized ultra-thin low OH content JGS1 quartz plates (thickness 0.5mm, aperture 25.4mm) for them, and optimized the edge stress elimination process.

- Final Result: After replacing the window, the signal-to-noise ratio of the spectrometer at 185nm increased by 5 times, successfully capturing the key characteristic absorption peaks. The project leader said: "The ultraviolet transmittance of this customized plate exceeded expectations completely."

Whether you need standard-sized samples for testing or complex and customized shapes, we can meet your needs with professional technology and efficient services. Please send us your drawings or technical specifications, and our engineers will provide you with a detailed material selection and quotation plan within 24 hours.

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.