In the field of optics, the purity and stability of materials directly determine the final performance of the system. Because of its extremely wide spectral transmission range (from ultraviolet to near-infrared), excellent high temperature resistance and extremely low thermal expansion coefficient, fused silica rods (especially fused quartz rods) have become the cornerstone of high-end optical applications from photolithography to laser manufacturing. Whether as a transmission medium for high-power lasers or an optical component for precision instruments, quartz rods can provide stability and transparency that ordinary optical glass cannot match.

Frequently asked questions and answers: How can quartz rods solve your optical application problems?

Q: During high-energy laser transmission, ordinary materials are prone to a decrease in beam quality due to the thermal lens effect. What should be done?

Answer: Our high-purity synthetic quartz rod has an extremely low coefficient of thermal expansion (5.5 × 10 ⁻⁷/℃) and excellent resistance to laser damage. This means that when subjected to high-power laser impact, the material undergoes minimal deformation, effectively suppressing the thermal lens effect and ensuring the stability of laser output and beam quality (M ⊃2; factor).

Q: How to ensure that the energy of the light source does not rapidly decay due to material absorption in deep ultraviolet lithography or detection equipment?

Answer: Metal impurities and hydroxyl groups in materials are the main culprits of UV absorption. The quartz rod we provide is controlled by a synthesis process, with a metal impurity content of up to ppb (one billionth), and has the ability to resist deep ultraviolet radiation. It maintains extremely high transmittance in the 193nm to 355nm wavelength range, avoiding premature aging of the equipment due to the "sun exposure" effect.

Q: The preparation of special fiber preform requires extremely high-precision core rods. How to ensure the geometric consistency after drawing?

Answer: We provide customized high-precision quartz rods with an outer diameter tolerance that can be controlled within ± 0.05mm or even higher, with extremely low out of roundness. This ensures stable control of the core to package ratio during the fiber drawing process, thereby reducing fiber loss and improving communication or sensing performance.

Product core advantage: Defining the benchmark for optical grade quartz rods

In the field of optics, data does not lie. Our quartz rods are trusted by global customers due to the following four core technological advantages:

1. Beyond the limit of purity: We use synthetic quartz technology instead of simply crushing natural crystals. This enables the total amount of metal impurities in the product to be controlled at an extremely low level (such as Li, Na, K and other alkali metal contents all<0.01ppm), avoiding fluorescence background and absorption loss caused by metal impurities.

2. Wide spectrum transmittance and uniformity: The material has extremely high transmittance in the ultraviolet band (200-400nm) and near-infrared band (visible light transmittance can reach 95%). At the same time, it has excellent optical uniformity and extremely low stress birefringence, ensuring minimal wavefront distortion.

3. Strict thermodynamic performance: The softening point is as high as 1683 ℃, and it can work for a long time at 1100 ℃. Excellent resistance to rapid cooling and heating, able to withstand drastic temperature changes without cracking, suitable for various high-energy lasers and high-temperature process environments.

4. No bubbles/stripes: In optical imaging systems, tiny bubbles or stripes can cause scattering and diffraction. Our products undergo precise testing to ensure that the material itself is free of bubbles, scratches, and dents.

Customization capability: Your specifications, our standards

We are well aware of the diversity of optical design, and a single size cannot meet all needs. Therefore, we offer highly flexible full-size customization services:

-Size range: From capillary quartz rods with a diameter of 1mm to large-sized synthetic quartz ingot rods with a diameter of 100mm or even larger, the length can be customized according to requirements (up to 3000mm).

-Geometric accuracy: Provide grinding and polishing rods. CNC machining can be carried out according to the drawings, including drilling, slotting, irregular machining, etc. The end face can be polished by fire.

-Material selection: High hydroxyl (UV resistant) or low hydroxyl (infrared low absorption) materials can be provided according to the application scenario.

Customer Application Cases

Case 1: Upgrading the Optical Path of High Power Laser Cutting Equipment

-Customer demand: A European laser equipment manufacturer found that the original quartz rod had a focus drift and rough cutting edge due to heat absorption during long-term operation when upgrading a 4kW fiber laser cutting head.

-Solution: We have customized ultra-low hydroxyl, high-purity synthetic quartz rods for our customers. By optimizing the absorption coefficient of the material at a wavelength of 1064nm and improving the uniformity of geometric dimensions, the energy distribution of the laser during transmission inside the rod is ensured to be uniform.

-Final effect: After replacement, the equipment has zero drift in the focal position and a 30% improvement in the smoothness of the cutting section after continuous full load operation for 8 hours. The customer has listed us as the designated raw material supplier for this type of laser.

Case 2: Optical Window and Light Guide of Deep Ultraviolet Spectrometer

-Customer demand: A research institution (anonymous) urgently needs a light guide rod that maintains high transmittance and no fluorescence background below 240nm when building a deep ultraviolet Raman spectroscopy system.

-Solution: We provide high hydroxyl quartz rods using a special synthesis process. High hydroxyl content can effectively saturate oxygen vacancy defects in quartz structures, significantly improve deep ultraviolet transmittance, and suppress fluorescence.

-Final effect: Clear intrinsic Raman signals of the substance were successfully collected, and relevant research results have been published in journals. This plan was subsequently adopted by multiple biopharmaceutical testing equipment manufacturers.

Whether you need shaped quartz rods for beam shaping or precision capillary quartz rods for fiber optic sensing, we can provide you with the most competitive solutions with professional material knowledge and precision machining technology.

We are ready to send you samples or provide drawing quotations. Please contact us immediately and let us know your application scenario and size requirements, so that we can provide the most solid "channel of light" for your optical project!

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.

Why choose us?

1.We are more experienced.

We have over 19 years production experience of quartz items.

2.We are more efficient.

We reply customers’ requests within 24 hours and we have high efficient production, engineers and sales team.

3.Our quality is more guaranteed.

We control the quality from quartz lumps to quartz sand and then quartz products, we have better and stricter quality control than other manufactures.

4.We are able to produce more difficult quartz products.

We have large grinding platforms and precision etching machines which enable us to 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.

5. About 20 years of professional experience

-Focusing on the manufacturing of quartz products for a quarter century

-The average working experience of the technical team exceeds 15 years

6.Global Service Network

-Our products are exported to over 40 countries and regions including Europe, America, Japan, South Korea, and the Middle East

-Multi language technical support (English, German, French, Spanish, Russian, Japanese)

7. Flexible cooperation mode

Support small batch trial orders, medium - and long-term cooperation, and urgent production for urgent orders, providing OEM/ODM services.