Wholesale Synthetic Fused Silica Plates Supplier & Factory

JGS1 is a purely synthetic amorphous silicon dioxide synthesized via chemical vapor deposition (flame hydrolysis of silicon tetrachloride). It possesses virtually zero impurities (metallic ions < 0.1 ppm), zero seed bubbles, and exceptional optical transmission in the deep ultraviolet (transmitting efficiently from 185 nm). In contrast, JGS2 is melted from natural high-purity quartz crystal sand; while cost-effective and highly transmissive across visible wavelengths (220 nm - 2500 nm), it exhibits trace aluminum, titanium, and alkali ions. JGS3 is vacuum-melted quartz processed to strip hydroxyl (OH⁻) ions below 5 ppm, eliminating the intense water-radical absorption peak at 2.73 µm and making it the premier choice for infrared optics between 260 nm and 3500 nm.

Thermal lensing occurs when an optical window absorbs a portion of the laser beam, creating a localized temperature gradient and consequent refractive index gradient (dn/dT). For multi-kilowatt fiber laser systems (1 kW to 30 kW), BY Photonics selects premium JGS1 synthetic silica characterized by bulk internal absorption < 3 ppm/cm at 1070 nm. Combined with pitch polishing yielding surface roughness Ra < 0.5 nm and ion-beam sputtered (IBS) anti-reflective coatings with total absorption < 5 ppm, the thermal gradient is minimized, keeping focal drift within sub-millimeter tolerances during prolonged duty cycles.

Our CNC machining centers, ultrasound-assisted milling centers, and double-sided polishing equipment achieve outer diameter / dimensional tolerances of ±0.01 mm, center thickness tolerances of ±0.01 mm, parallelism < 5 arcseconds, and surface flatness up to λ/10 @ 632.8 nm across clear apertures up to 90%. We machine complex circular discs, rectangular flats, stepped substrate plates, through-hole sight glasses, beveled prisms, and custom wafer carriers up to 450 mm diameter or 600 mm × 600 mm in size.

Yes. We partner with precision optical thin-film deposition laboratories to deliver complete drop-in optics. Standard and custom coating designs include Broadband Anti-Reflective (BBAR: 193nm, 248nm, 266nm, 355nm, 532nm, 1064nm, and dual-band NIR), High-Reflective (Dielectric Laser Line HR > 99.9%), Partial Reflective Beam Splitters, and Hydrophobic/Oleophobic hard protection coatings. All coatings undergo rigorous adhesion testing (MIL-M-13508C tape test) and laser damage threshold validation.

Standard prototype orders (1 to 20 pieces) for stocked JGS1/JGS2/JGS3 raw material blanks typically ship within 7 to 10 working days, inclusive of final Zygo metrology reports. Wholesale batch productions (100 to 10,000 pieces) require 3 to 4 weeks depending on the complexity of edge beveling, ultrasonic hole-drilling, and optical coating runs. Expedited 5-day emergency manufacturing slots are available for semiconductor line repairs or R&D milestone deliveries.

Every synthetic fused silica plate undergoes ultrasonic multi-stage detergent cleaning followed by dry nitrogen blowout in a Class 1000 cleanroom. Parts are hermetically sealed in Class 100 vacuum bags or individual lint-free membrane boxes (gel-boxes for ultra-polished finishes). Bulk boxes are cushioned with high-density anti-static polyethylene foam, enclosed in hermetic vapor-barrier foil pouches with silica desiccant, and packaged inside shock-absorbing export wooden crates to eliminate physical abrasion, vibration micro-fissures, and ambient moisture damage during international transit.