Fused Quartz Glass Disc JGS2

Fused Quartz Glass Disc JGS2

Size: D=diameter*T=thickness

Crafted from high-quality fused quartz, our JGS2 Glass Discs deliver exceptional optical clarity and performance for a broad spectrum of ultraviolet (UV) and infrared (IR) applications. Manufactured using advanced electric fusion techniques, these discs combine excellent transmission with superior physical and thermal stability, making them a reliable and versatile choice.

JGS1 (Synthetic Fused Silica)

• Production: Made via chemical vapor deposition (CVD) from high-purity gases like SiCl₄.

• Key Property: Extremely low hydroxyl (OH) content (<10 ppm) and metal impurities.

• Spectral Feature: Excellent deep-UV transmission, with a cutoff wavelength as low as ~160 nm. No significant OH absorption peak in the infrared.

• Primary Application: Precision optics for deep-UV lithography (e.g., 193nm, 248nm), excimer laser components, and space-based UV instruments.

JGS2 (Hydrogen-Oxygen Flame Fused Glass)

• Production: Made by melting natural quartz or crystal in a hydrogen-oxygen (H₂/O₂) flame.

• Key Property: Contains a medium level of hydroxyl (OH) content (~150-400 ppm).

• Spectral Feature: High transmission in the “solar-blind” UV range (220-280 nm) and visible spectrum. Has a strong OH absorption peak at 2.73 µm, making it unsuitable for that IR wavelength.

• Primary Application: General-purpose UV optics, such as lenses, windows for UV spectroscopy, UV detection, and standard laser components.

JGS3 (Electrically Fused Silica)

• Production: Made by melting natural quartz sand in an electric furnace under vacuum or inert atmosphere.

• Key Property: Low OH content but contains more bubbles and inclusions. Higher metallic impurity levels.

• Spectral Feature: Poor UV transmission (cutoff ~260 nm or higher). Usable in the visible to infrared range, but with reduced optical homogeneity due to inclusions.

• Primary Application: Cost-effective infrared windows, viewports for furnaces, and other applications where high optical precision is not critical.

JGS1 is for deep-UV excellence, JGS2 is the standard for most UV/VIS applications, and JGS3 is a budget choice for IR/visible applications not requiring high precision.