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.
Ready to Order JGS1? Get a Quote for Custom JGS1 Fused Silica Plates →
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 |
Custom Fused Silica Precision Machining
YOUJIA OPTICAL provides precision laser cutting, CNC micro-hole drilling, beveling, and custom shape processing for JGS1, JGS2, and JGS3 fused silica optical windows, maintaining tight dimensional tolerances within ± 0.05 mm.
Why Choose YOUJIA OPTICAL for Fused Silica?
- Precision Laser & CNC Cutting: Custom shapes, micro-holes, step edges, and polished borders for all fused silica grades.
- Surface Quality: Scratch/Dig options from 60/40 down to 20/10 for high-power laser optics.
- In-house AR Coating: Custom anti-reflective coatings enhancing transmission up to 99%+ at specified wavelengths.
Expert FAQ for Engineers
Q: Can JGS2 be used for UV lasers?
A: While JGS2 transmits UV light, JGS1 is strongly recommended for high-power UV lasers due to its higher synthetic purity and superior resistance to laser-induced damage.
Q: What is the maximum size and tolerance for JGS1 fused silica windows?
A: We support custom diameters up to 300 mm with dimensional tolerances tightly controlled within ± 0.05 mm.
Q: Can YOUJIA OPTICAL process custom laser cutting and micro-hole drilling for fused silica?
A: Yes, YOUJIA OPTICAL specializes in precision laser cutting, micro-hole drilling, beveling, and custom shape processing for JGS1, JGS2, and JGS3 optical substrates according to customer CAD/PDF drawings.