JGS2 square window quartz plate is an optical window plate made of fused silica. It has excellent transmittance in the ultraviolet to near-infrared bands, and is especially suitable for observation windows and optical detection scenes under high temperature, high pressure and corrosive environments. Compared to ordinary glass windows, JGS2 quartz plates have a lower coefficient of thermal expansion and higher thermal stability, which can maintain dimensional stability and clear light transmission in severe temperature differences. It is widely used in vacuum chamber observation windows, high-temperature furnace windows, laser protection windows, and optical path protection of various analytical instruments. With flexible customization of size and thickness, JGS2 square window quartz provides a reliable, durable, and cost-effective optical window solution for scientific research and industrial sites.

FAQ

Q1: What are the core advantages of JGS2 quartz plates compared to ordinary glass windows?  

A: Ordinary glass is prone to softening and cracking above 300 ℃, and has extremely low ultraviolet transmittance. JGS2 quartz plate can work for a long time below 800 ℃, with an instantaneous temperature resistance of up to 1100 ℃. At the same time, the 200nm ultraviolet transmittance exceeds 80%, making it very suitable for high-temperature ultraviolet monitoring scenarios.

Q2: What specifications can be customized? What is the minimum order quantity?  

A: We support customization of square windows with side lengths ranging from 5mm to 500mm, and can be processed with thicknesses from 0.5mm to 15mm. We can provide secondary processing such as chamfering, steps, and punching. Single piece can be customized for production, with no minimum order quantity limit.

Q3: Will JGS2 window surface be coated?  

A: Uncoated, single-sided or double-sided anti reflective films (AR films) can be provided according to demand, with a transmittance of over 99% in specific wavelength bands (such as 266nm, 355nm, 1064nm), and waterproof and oil resistant coating options are also available.

Q4: Can it be used in high vacuum or corrosive gas environments?  

A: Okay. JGS2 quartz plate has excellent chemical stability and hardly reacts with other media except hydrofluoric acid and hot concentrated phosphoric acid. The material is dense and the gas release rate is extremely low, making it suitable for ultra-high vacuum systems at 10 ⁻⁷ Pa.

What are the core needs of users to be addressed?

-High temperature observation is not clear: ordinary windows quickly age, blur, or even explode at high temperatures, while JGS2 windows remain transparent for a long time and monitor the status of materials in the furnace in real time.

-Low transmittance of UV detection: UV spectral analysis requires the window plate itself to not interfere with the signal. JGS2 has high and stable transmittance in the UV band, ensuring accurate detection data.

-Frequent replacement and maintenance costs are high: Quartz windows are corrosion-resistant and scratch resistant, with a service life 5-10 times longer than ordinary glass, significantly reducing the frequency of equipment downtime and replacement.

-Non standard sizes cannot be found in stock: Standard products on the market are difficult to match with special equipment interfaces, so we customize them accurately according to the drawings, with a delivery cycle of only 7-12 days.

Main application areas

Vacuum coating equipment: observe the state of the evaporation source inside the chamber and the position of the substrate

High temperature furnace/tube furnace: real-time observation of sample sintering and annealing process

Laser processing equipment: protective window and laser output window, capable of withstanding stray light impact

Biochemical analyzer: colorimetric dish light path window, resistant to cleaning agent corrosion

Semiconductor wet process equipment: observe the wafer cleaning reaction inside the tank

Product advantages

1. Excellent optical performance: Transmittance in the wide spectral range of 200-2500nm>80%, without interference from self absorption peaks.

2. Outstanding thermal stability: The coefficient of linear expansion is only 5.5 × 10 ⁻⁷/℃, and the thermal shock resistance is greater than 400 ℃ temperature difference.

3. Reliable mechanical strength: The bending strength is about 67MPa, the Mohs hardness is 5.5, and it is not easy to scratch.

4. High customization flexibility: Multiple structural forms such as rectangular, circular, irregular openings, and stair steps can be provided.

5. Attached certification report: Spectral transmittance curve and flatness detection report (λ/4 @ 632.8nm) are provided with the goods.

Customer Application Case (Anonymous)

Case 1: A European vacuum coating equipment manufacturer

The customer's original window was a high-end brand, with high single piece prices and a delivery time of up to 6 weeks. We provide JGS2 square window quartz plates with dimensions of 115 × 115 × 12.5mm, with chamfers of 0.5mm on all four sides and uncoated on both sides. According to customer testing, there is no air leakage or discoloration after continuous operation for 2000 hours under a vacuum degree of 1 × 10 ⁻⁶ Pa. The procurement cost has been reduced by 43%, and the delivery time has been shortened to 10 working days.

Case 2: A laser cleaning equipment factory

The output window of the laser cleaning head in this factory was originally made of K9 glass. However, when using 355nm ultraviolet laser, there is a significant decrease in color center and transmittance, and it needs to be replaced every 200 hours on average. We recommend JGS2 quartz plate and double-sided coating with 355nm anti reflective film (R<0.5%), with a size of 52 × 52 × 3mm. After application, the service life of the window plate is increased to over 5000 hours, and the frequency of on-site equipment maintenance is significantly reduced.

Case 3: High Temperature Materials Laboratory in Universities

The research team needs to observe the process of molten salt corrosion experiment, and the window plate needs to withstand a temperature of 850 ℃ and come into contact with molten chloride salt at the same time. I have tried sapphire windows, but the cost is too high. We offer JGS2 square windows with dimensions of 30 × 30 × 2mm, finely polished sides, and sealed with stainless steel flanges using graphite gaskets. Experience 20 cycles of high temperature (room temperature) ↔ The window remains clear and transparent even at 850 ℃ and a heating and cooling rate of 15 ℃/min, without cracks or crystallization. The procurement cost is only 1/5 of the sapphire solution.

You only need to provide the required size, thickness, operating temperature, and spectral requirements, and we will issue the processing drawings and quotation within 12 hours. Support global shipping. Welcome to contact our technical sales team for sample testing.

Luverre Quartz is a manufacturer focusing on producing various quartz plates, we can produce customized quartz plates in different sizes and shapes, such as square, round, oval and other special shaped designs according to customer's requirements. The processing includes cutting, bending, welding, etc., and there are different colors available, such as transparent quartz plates, opaque quartz plates, milky quartz plates and so on.