Fused Silica Glass Solutions: JGS1, JGS2, & JGS3 Comparison Guide

Fused silica is the backbone of high-performance optics. At YOUJIA OPTICAL, we specialize in three primary grades, each optimized for specific wavelength ranges and thermal environments.

### JGS1: The UV Specialist (185nm – 2500nm)

• Best for: High-power UV lasers, lithography, and precision beam splitters.
• Key Advantage: Synthetic purity. It is virtually bubble-free and offers the highest resistance to laser-induced damage.

### JGS2: The Industry Standard (220nm – 2500nm)

• Best for: Optical windows, substrates, and non-laser optical components.
• Key Advantage: A cost-effective balance between high transmission and durability for visible and near-IR applications.

### JGS3: The Infrared Expert (260nm – 3500nm)

Key Advantage: Unlike JGS2, it eliminates the absorption band at 2700nm, ensuring clear transmission in the mid-infrared range.

Best for: IR sensors, thermal imaging, and high-temperature viewports.

Technical Comparison: JGS1 vs. JGS2 vs. JGS3

Grade	Optical Feature	Transmission Range	Typical Applications
JGS1	Deep UV, Bubble-free	185nm – 2500nm	Laser windows, UV lithography, high-energy optics
JGS2	Standard Quality	220nm – 2500nm	Substrates, optical windows, non-laser applications
JGS3	Infrared Optimized	260nm – 3500nm	IR sensors, thermal imaging, high-temp environments

Why Choose YOUJIA OPTICAL for Fused Silica?

Precision CNC Cutting: We offer custom shapes, holes, and polished edges for all fused silica grades.

Surface Quality: Scratch/Dig options from 60/40 down to 20/10 for high-power laser use.

In-house AR Coating: Enhance transmission up to 99%+ in your specific wavelength.

Expert FAQ for Engineers

Q: Can JGS2 be used for UV lasers?

• A: While JGS2 transmits UV light, JGS1 is recommended for high-power lasers due to its superior purity and resistance to solarization.

Q: What is the maximum size for JGS1 windows?

• A: We support custom diameters up to 300mm with thickness tolerances within ±0.05mm.