Precision Engineering Portfolio: Top Series
Engineered cold machining, diamond core extraction, and flame-polished optical assemblies configured to sub-micron surface tolerances.
Advanced Manufacturing Advantages: The China Optical Hub Paradigm
Delivering high-precision photonic glass through full vertical integration, rapid prototyping, and end-to-end supply chain resiliency.
Vertical Ingot-to-Component Integration
By controlling raw ingot purification, synthetic silica chemical vapor deposition (CVD), and thermal boule annealing directly in our Tianjin facility, our manufacturing line removes secondary handling contamination. This yields exceptional transmission homogeneity across both JGS1 deep-UV and JGS3 infrared bands with near-zero bubble classification.
Dual Cold & Flame Machining Facility
Unlike conventional optical shops that outsource thermal glassblowing or multi-axis CNC drilling, our facility unites precision diamond-wheel CNC grinding, planetary chemical-mechanical polishing (CMP), and oxyhydrogen thermal welding under one roof, sustaining absolute dimensional stability without interface drift.
Agile Scale & Cost Efficiency
Rooted in China's robust industrial ecosystem, we provide fast engineering cycle times. OEMs benefit from rapid prototyping (as fast as 5–7 days) alongside multi-thousand batch production runs, optimizing procurement expenditures by 30% to 45% compared to North American or European component suppliers.
Material Science Classification & Metrology Standards
Quantitative analysis of high-purity optical substrates machined for extreme thermal, mechanical, and optical environments.
| Substrate Material | Transmission Band (nm) | Refractive Index (nd) | Thermal Expansion (CTE) | Max Temp (°C) | Typical Industrial Mission |
|---|---|---|---|---|---|
| JGS1 Synthetic Fused Silica | 185 – 2,500 | 1.4585 | 5.5 × 10⁻⁷ / °C | 1,100 | Excimer laser optics, deep-UV spectrophotometry, DUV stepper viewports |
| JGS2 Fused Quartz | 220 – 2,500 | 1.4585 | 5.4 × 10⁻⁷ / °C | 1,150 | Semiconductor furnace quartzware, diffusion boats, laser flow tubes |
| JGS3 Low-OH Fused Quartz | 260 – 3,500 | 1.4585 | 5.5 × 10⁻⁷ / °C | 1,100 | Infrared analytical sensors, thermal imaging windows, pyrometer glass |
| Synthetic Single-Crystal Sapphire | 170 – 5,500 | 1.7680 | 5.8 × 10⁻⁶ / °C | 1,800 | High-pressure sight glasses, IPL light guide prisms, extreme wear windows |
| Borofloat® 33 Borosilicate | 350 – 2,500 | 1.4714 | 3.25 × 10⁻⁶ / °C | 450 | MEMS anodized bonding, semiconductor sacrificial wafers, microfluidics |
| Samarium-Doped Glass (Sm:Glass) | 400 – 1,400 (Select) | 1.5200 | 8.0 × 10⁻⁶ / °C | 400 | Parasitic 1064nm ASE suppression, Nd:YAG medical and aesthetic flow tubes |
λ/10
Surface Wavefront Accuracy (@632.8nm)
20-10
MIL-PRF-13830B Scratch-Dig Finish
±0.002mm
CNC Dimensional Machining Tolerance
<24h
Direct DFM Engineering Review Protocol
Macro Solutions Across Global Optical Sectors
Delivering end-to-end substrate solutions engineered to overcome critical environmental, optical, and mechanical bottlenecks.
High-Power Laser Cavity Thermal Management
For industrial multi-kilowatt fiber and diode-pumped solid-state (DPSS) systems, thermal lensing and amplified spontaneous emission (ASE) degrade beam quality. We machine custom Samarium-doped quartz triple bore tubes and sintered diffuse PTFE reflectors that filter parasitic 1064nm frequencies while dissipating massive thermal loads via laminar coolant channels.
Semiconductor Front-End & Wafer Handling
Thermal cycling up to 1,150°C and aggressive fluorine/chlorine plasma etch chemistries rapidly degrade standard components. We deliver welded semiconductor diffusion boats, quartz wafer carriers, and Borofloat® 33 substrates engineered with minimum trace metal impurities (<0.1 ppm Fe, Cu, Ni), eliminating wafer batch cross-contamination.
Analytical Spectroscopy & Flow Cytometry
Precision photometric analysis demands ultra-high UV transmission and sub-nanometer path length accuracy. Our synthetic fused silica cuvettes and micro-capillary flow cells employ direct molecular fire fusion rather than optical adhesives, eliminating organic adhesive autofluorescence across deep ultraviolet spectroscopy wavelengths.
Global Enterprise Procurement Matrix: Demand Dynamics
How Tier-1 photonics integrators in North America, Europe, and Asia Pacific structure their optical supply chain criteria.
Traceable Quality Documentation
Global procurement teams require comprehensive traceability. Every optical shipment from BY Photonics is paired with interferometric wavefront phase maps (Zygo interferometer data), spectrophotometer transmission curves, and complete raw material melt certifications verifying batch purity.
Cleanroom Export Packaging Standards
Preventing particle adhesion and electrostatic surface damage during international transit is critical. Our components undergo multi-stage ultrasonic deionized cleaning followed by Class 100 cleanroom packaging in anti-static, nitrogen-flushed, vacuum-sealed blister packs ready for immediate cleanroom introduction.
Short Cycle DFM & Kanban Agreements
To reduce supply-chain risk, procurement teams favor suppliers who bridge engineering review and inventory management. Our bilingual application engineers complete Design-For-Manufacturability (DFM) analyses within 24 hours, supported by customized inventory buffering for high-volume annual contracts.
Frequently Asked Questions: Technical & Sourcing Authority
In-depth engineering answers addressing tolerances, coatings, raw material specifications, and quality verification.
What are the mechanical and optical distinctions between JGS1, JGS2, and JGS3 quartz? +
JGS1 is synthetic fused silica synthesized from high-purity SiCl₄ via chemical vapor deposition. It contains very low metallic impurities and negligible bubble content, offering superior transmission across the deep ultraviolet (185nm–2500nm). JGS2 is electric/gas-fused natural quartz crystal, ideal for UV-visible applications (220nm–2500nm) where high-temperature thermal durability up to 1,150°C is required at economical costs. JGS3 is infrared-grade fused quartz manufactured in a vacuum atmosphere, yielding an extremely low hydroxyl group (OH < 5 ppm) that eliminates the deep 2.73μm absorption band and enables stable transmission up to 3,500nm.
What surface roughness and flatness parameters can BY Photonics hold on custom windows? +
Utilizing pitch-polishing and double-sided planetary lapping systems, our Tianjin production line achieves surface flatness down to λ/10 to λ/20 per inch (@632.8 nm). Surface quality can be specified down to 10-5 or 20-10 scratch-dig according to MIL-PRF-13830B or ISO 10110 standards. Furthermore, atomic force microscopy (AFM) reveals surface roughness Ra < 0.5 nm (5 Å) on super-polished synthetic fused silica substrate lines.
Can you provide custom anti-reflective (AR) or reflective optical coatings? +
Yes. We provide Ion-Assisted Deposition (IAD) and Electron-Beam (E-Beam) PVD thin-film coatings. Our coating capabilities include single-wavelength (V-coat), broadband anti-reflective (BBAR, e.g., 400–700nm or 1064nm), dual-wavelength laser coatings (such as 755nm + 1064nm for aesthetic laser handpieces), high-reflectivity dielectric dielectric coatings (R > 99.9%), and high-damage-threshold coatings designed to resist >15 J/cm² @ 1064nm, 10ns pulses.
How do you guarantee bubble and inclusion grades for critical optical parts? +
Raw silica ingots undergo strict inspection under high-intensity cross-polarized illumination prior to any cutting or grinding process. We inspect and classify raw optical materials in strict compliance with ISO 10110-3 specifications, ensuring that optical apertures are certified at Class 0 (zero inclusions or bubbles within the primary active optical zone).
What drawing formats and engineering files are required for DFM and pricing? +
We accept standard 3D CAD files including STEP (.stp), IGES (.igs), and 2D vector layouts such as DXF, DWG, along with dimensioned PDF prints. Please ensure critical parameters including dimensional tolerances, clear aperture, surface figure (flatness), scratch-dig, edge beveling/chamfers, material grade (e.g., JGS1 vs JGS2), and operating laser wavelengths/energy thresholds are marked.
Advanced Substrates & Custom Fabrications: Bottom Series
Specialized optical cavities, doped quartz laser assemblies, and micro-channeled precision substrates manufactured to exact tolerances.
