5-200mm high-purity 93% transmittance fused silica rod is a high-performance optical material, which is made of high-purity silicon dioxide (SiO ₂) by high temperature melting process, and has excellent optical performance, thermal stability and chemical stability. This product has a light transmittance of up to 93% and is suitable for the ultraviolet (UV), visible light (VIS), and near-infrared (NIR) bands. It is widely used in fields such as optics, semiconductors, laser technology, and medical equipment.  

Frequently Asked Questions (FAQ)

What is the diameter range of this fused silica rod? Can non-standard sizes be customized?

The standard diameter covers 5mm to 200mm. At the same time, we have comprehensive customization capabilities and can customize special diameters, lengths, square bars, conical bars, threaded bars and other irregular specifications according to drawing requirements, with flexible minimum order quantities.

What does 93% visible light transmittance mean specifically? How does it perform in the ultraviolet band?

93% visible light transmittance means extremely low optical loss, suitable for optical path transmission and precision optical systems. In the ultraviolet spectral region, the transmittance can also reach over 80%, making it suitable for applications such as ultraviolet curing, laser protection, and semiconductor lithography.

Can the temperature resistance of this quartz rod meet the requirements of high-temperature processes?

It can be used for a long time in an environment of 1100 ℃ -1250 ℃, with a short-term temperature tolerance of up to 1450 ℃ and a softening point of about 1730 ℃. The extremely low coefficient of thermal expansion also endows it with excellent thermal shock resistance, capable of withstanding drastic temperature changes without cracking.

How to ensure the purity and corrosion resistance of quartz rods?

The SiO ₂ content is over 99.99%, and the metal impurity content is controlled at an extremely low level (ppm level), effectively preventing pollution in high-temperature processes. Except for hydrofluoric acid, it hardly reacts with other acids and bases, and its acid resistance is 30 times that of ceramics and 150 times that of stainless steel.

Can the machining accuracy of large-sized quartz rods be guaranteed?

We adopt differentiated tolerance control for different sizes. For example, small sizes below 5mm can maintain high precision of ± 0.1mm, with a tolerance of ± 0.2-0.25mm for sizes 15-20mm, balancing machining feasibility and usage accuracy.

Key features:

-High transmittance: 93% transmittance (wavelength range of 200nm-2500nm), suitable for wide spectrum applications.  

-High purity: SiO ₂ content ≥ 99.99%, extremely low impurity content, reducing light scattering and absorption.  

-Excellent thermal stability: extremely low coefficient of thermal expansion (5.5 × 10 ⁻⁷/℃), high temperature resistance (softening point of about 1700 ℃).  

-Chemical inertness: resistant to strong acids and bases (except hydrofluoric acid), suitable for corrosive environments.  

-High mechanical strength: high hardness, scratch resistance, suitable for precision optical component processing.  

Product specifications

Diameter range: 5mm-200mm (customizable)

Length: Customized according to customer needs (up to 2000mm in length)

Transmittance: ≥ 93% (200nm-2500nm)

Purity: ≥ 99.99% SiO ₂

Surface quality: Optical grade polished, matte or blank optional

Temperature resistance range: -200 ℃ to 1200 ℃ (long-term use)

Main application areas

(1) Optics and Laser Technology

-Laser system: used as a laser cavity, light guide rod, and beam shaping element, suitable for high-power lasers.  

-Optical lenses and windows: used in ultraviolet and infrared optical systems, such as microscopes, spectrometers, sensors, etc.  

-Fiber optic communication: As a fiber optic coupling element, it improves the efficiency of optical signal transmission.  

(2) Semiconductor and Photovoltaic Industry

-Wafer processing: Used for carriers and fixtures in semiconductor manufacturing, with high temperature resistance and no pollution.  

-Photovoltaic equipment: used as high-temperature resistant observation windows or light guiding components in the processing of solar cells.  

(3) Medical and Life Sciences

-Endoscopy and Medical Laser: High transmittance ensures clear imaging and precise laser treatment.  

-Analytical instruments: used for precision optical equipment such as UV spectrophotometers and PCR machines.  

(4) Industry and Research

-High temperature observation window: suitable for furnaces and vacuum equipment, resistant to high temperatures and not deformed.  

-Chemical experimental equipment: corrosion-resistant, can be used for observation or diversion in strong acid and alkali environments.  

What problems can we solve?  

-High precision optical requirements: 93% high transmittance ensures no loss of optical signal, suitable for precision optical systems.  

-Extreme environmental stability: high temperature resistance, thermal shock resistance, suitable for harsh working conditions such as semiconductors and lasers.  

-Chemical corrosion challenge: Long term stable use in acidic and alkaline environments to reduce equipment wear and tear.  

-Customized requirements: Provide different sizes and surface treatment solutions to meet diverse application scenarios.  

Customized service

We support personalized customization, including but not limited to:

Size customization: diameter (5-200mm), length (cut as needed)

Surface treatment: optical polishing, matte finish, coating (anti reflective film, reflective film, etc.)

Special shape: can be processed into square, irregular rod, etc

Performance optimization: Adjust the transmission band or mechanical strength according to customer needs

Why choose us?  

High purity raw materials: Ensure stable optical performance and reduce impurity interference.  

Precision machining technology: CNC machine tools+optical grade polishing to ensure dimensional accuracy and surface quality.  

Strict quality inspection: Each batch of products undergoes testing such as spectral analysis and transmittance testing.  

Quick response: Provide technical consultation, sample testing, and mass production services.  

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.