Custom Quartz Optical Components Supplier & Factories

Fused quartz is manufactured by melting high-purity naturally occurring quartz crystals at high temperatures (~2000 °C). It delivers high thermal and structural performance, making it standard for furnace tubes, wafer boats, and infrared viewports. Fused silica, conversely, is synthesized synthetically from silicon tetrachloride (SiCl₄) gas combustion. It has lower trace impurity levels (total metallic contaminants < 0.1 ppm), higher UV transmission down to 185 nm, and virtually zero micro-bubble content, rendering it suitable for excimer laser lenses, lithography photomasks, and precision laser windows.

Our multi-axis CNC machining, slicing, and lapping centers hold geometric dimensional tolerances down to ±0.01 mm for standard custom components, and down to ±0.002 mm upon specific application request. For optical surfaces, we deliver surface figure accuracy of λ/10 to λ/20 at 632.8 nm, scratch-dig specifications complying with MIL-PRF-13830B (from standard 60/40 down to precision laser-grade 10/5), and surface micro-roughness Ra < 0.3 nm.

Devitrification (the transition from amorphous fused quartz to crystalline cristobalite) begins around 1,150 °C and accelerates under exposure to alkali metal contaminants (Na, K, Li). Our manufacturing controls include automated chemical acid de-contamination (HF and HNO₃ bath treatment) combined with full stress-relief annealing furnaces. We provide engineering guidelines to ensure end users maintain clean handling protocols, preventing surface particulate catalytic devitrification up to continuous working limits of 1,100 °C (1,250 °C peak excursion).

Every production batch is supplied with a comprehensive Quality Inspection Certificate (COA). Standard documentation encompasses full CMM dimensional coordinate check reports, spectrometer optical transmission plots (190 nm–3200 nm), Zygo phase-shifting laser interferometer wavefront maps, and helium mass spectrometer vacuum leak rate test certifications (< 1×10⁻¹⁰ mbar·l/s for flanged reactor chambers).

Prototyping orders based on 2D/3D models (PDF, DWG, STEP) are evaluated by our manufacturing engineering department within 24 hours. Custom prototype manufacturing and sample dispatch are achieved in 7 to 14 business days. Volume production programs for scheduled deliveries or batch shipments run on standard manufacturing cycles of 3 to 5 weeks, supported by regional buffer inventory agreements for qualifying OEM customers.