High optical uniformity JGS1 quartz glass

JGS1 quartz glass with high optical uniformity is a top-level transparent material specially designed for high-end optical systems, with extremely low refractive index non-uniformity (Δ n ≤ 1 × 10 ⁻⁶) and excellent spectral transmittance. As a leading global manufacturer of customized quartz products, our JGS1 grade products strictly follow international standards and perfectly eliminate wavefront distortion. They are essential core substrates in the fields of deep ultraviolet lithography, high-energy lasers, and precision interferometry.

Frequently Asked Questions (FAQ)

Q1: What are the essential differences in optical properties between JGS1 quartz glass and ordinary fused silica?

A: JGS1 belongs to synthetic fused silica, and its core advantage lies in its extremely high chemical purity and optical uniformity. Compared with natural quartz or low-grade fused silica, JGS1 has a higher transmittance in 185nm to 2500nm, and has very low internal bubbles and impurities. The most crucial thing is that its refractive index non-uniformity is controlled at one millionth, which can effectively avoid wavefront distortion caused by the passage of light beams, which is incomparable to ordinary quartz.

Q2: Can your company provide customized processing of JGS1 quartz with non-standard sizes or special surface shapes?

A: Absolutely possible. As a professional manufacturer of customized quartz products, we provide comprehensive customization services to customers worldwide. Whether it is ultra large aperture optical windows, irregular prisms, or lens substrates with extremely high surface accuracy requirements, we can cut, grind, polish, and coat them according to customer drawings, with tolerance control up to the nanometer level.

Q3: What is the damage resistance threshold of JGS1 material in deep ultraviolet (DUV) environment?

A: JGS1 quartz glass exhibits excellent resistance to laser damage due to its low hydroxyl content and dense structure. At wavelengths of 193nm (ArF excimer laser) and 248nm (KrF excimer laser), its body damage threshold and surface damage threshold are both at the leading level in the industry, making it very suitable for high-power, high repetition rate laser application environments.

Q4: How to ensure the optical uniformity and consistency of bulk purchased products?

A: We adopt advanced testing processes, and each batch of JGS1 products leaving the factory undergoes high-precision interferometer testing (such as Zygo interferometer), and provide detailed testing reports (including refractive index distribution map, stress birefringence data, etc.). Our quality management system ensures that every step from raw material melting to final polishing is controllable, ensuring consistency in global product delivery.

For users engaged in precision optical research and manufacturing, "wavefront distortion" and "energy loss" are the two core pain points. The small density fluctuations inside ordinary optical materials can cause laser beam divergence or imaging blur, directly reducing system resolution; Impurity absorption may lead to thermal lensing effect and even material explosion under high-power laser.

Our high optical uniformity JGS1 quartz glass is designed to address these issues:

Solving the problem of imaging distortion: The ultimate uniformity of refractive index ensures that there is no phase error when the beam passes through, ensuring the maximum resolution of lithography machines, telescopes, and other systems.

Addressing high-power thermal effects: The ultra-low absorption coefficient minimizes the temperature rise of the material under high-energy laser irradiation, maintaining the stability of the optical system.

Addressing customization challenges: Breaking through the limitations of standard parts, providing users with one-stop customization from raw materials to finished components, shortening the research and development cycle.

Ultimate optical performance indicators

Spectral transmittance: The average transmittance is>90% in the range of 185nm-2500nm, especially in the deep ultraviolet region.

Optical uniformity: Δ n ≤ 1 × 10 ⁻⁶, ensuring minimal wavefront distortion and meeting the requirements of extreme ultraviolet (EUV) and deep ultraviolet (DUV) lithography.

Low stress birefringence:<5 nm/cm, suitable for polarization sensitive optical systems.

Widely applicable scenarios

Semiconductor lithography equipment: used as projection objective lens group, mask substrate, and illumination system lens.

High energy laser system: used for laser beam expander, focusing mirror, output coupling mirror, and inertial confinement fusion device.

Precision measurement and testing: interferometer reference mirror, high-precision optical platform, astronomical telescope main mirror blank.

Aerospace optics: satellite payload lenses, space remote sensing instrument windows, tolerant to extreme temperature differences and radiation.

Global customization service capability

We are well aware of the strict requirements for specifications and sizes in different application scenarios. Relying on advanced cold processing and hot forming equipment, we provide:

Size customization: Various discs, blocks, and irregular parts with diameters ranging from 10mm to 600mm+.

Surface accuracy: It can provide flatness and sphericity with λ/20 @ 632.8nm or even higher accuracy.

Surface treatment: including ultra smooth polishing, anti reflective film (AR), high reflectivity film (HR), and customized coating services for spectral films.

Typical application case analysis

Case 1: A well-known observatory (used for calibrating large telescopes)

When constructing a large aperture astronomical telescope, the research team needed a high uniformity optical window with a diameter of 450mm and a thickness of 40mm as the image field correction mirror for the telescope's main focus. The material needs to have extremely high transmittance in the visible to near-infrared wavelength range, and the full aperture wavefront distortion should be less than λ/6. The high uniformity JGS1 billet prepared by CVD method was subjected to precision grinding and coating, and the final product delivered had a full aperture wavefront distortion better than λ/8 in acceptance testing, which helped the telescope obtain clearer deep space imaging.

Case 2: A high-energy physics research institute in Europe - Inertial confinement fusion laser transmission window

Customer background

The research institute is building a large-scale laser fusion experimental device, which requires a large-diameter (Φ 300mm) vacuum window material to withstand the synchronous bombardment of multiple high-energy laser beams.

face challenges

Traditional quartz windows are prone to thermal lensing effects at high energy densities, leading to focal drift; Moreover, large-sized materials are difficult to ensure overall optical uniformity and are prone to local hotspots that can cause explosions.

solution

We have utilized our unique large-size synthetic quartz melting technology to prepare JGS1 large-diameter plates for our customers that are free of stripes and bubbles.

Uniformity control: Through a special annealing process, residual stresses inside large-sized sheets are eliminated to ensure Δ n ≤ 1 × 10 ⁻⁶.

Damage threshold optimization: The surface was subjected to super cleaning and special coating treatment, increasing the laser damage threshold to 15 J/cm ⊃2; (10ns, 1064nm).

Application Effectiveness

This window has shown stable performance in multiple full power shooting experiments, without any thermal deformation or damage, effectively ensuring the accuracy of experimental data and the safe operation of the device. The customer evaluated our product as meeting the admission standards of top international laboratories.

Whether you need single piece high-precision prototype verification or large-scale bulk procurement, we are ready to provide you with the most professional JGS1 quartz glass customization solution. Please contact our global sales team for free technical consultation and pricing.

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.