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Description

UM Optics offers high-quality single crystal silicon wafers designed for demanding mid-infrared optical applications in the 3–5 µm wavelength range. Known for their excellent thermal conductivity, low density, and optical transparency in the infrared spectrum, these wafers serve as ideal substrates for optical windows, filters, laser reflectors, infrared thermometry devices, and infrared lenses.

Our wafers are available in CZ (Czochralski), FZ (Float Zone), and intrinsic silicon types, with diameters ranging from 2-inch to 8-inch. Each wafer undergoes precision-controlled processing—spanning material growth, cutting, polishing, coating, and dicing—to ensure optimal surface flatness and dimensional accuracy. We support both standard and custom specifications to suit diverse industry requirements.

With a vertically integrated production line, we maintain strict quality control, fast turnaround times, and competitive pricing. Whether for small-batch R&D or high-volume manufacturing, UM Optics is equipped to deliver reliable and consistent silicon wafer solutions tailored to your project needs.

4'' 6'' 8'' Silicon Wafer

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Specifications

Wafer Material: Silicon (Si)
Diameter: Not Specified
Thickness: 280 um
Size: 4'' 6'' 8''
Type: NP
TTV: ≤10 um
Parallelism: <0.05 mm
Surface Roughness: <Ra 0.8 um
Infrared Transmission Range: 3–5 µm
Surface Finish: Polished to optical-grade smoothness
Thickness Tolerance: Customized per request
Processing Capabilities: Growth, Cutting, Polishing, Coating, Dicing
Optical Application Suitability: IR Windows, Filters, Reflectors, Lenses

Got questions about specs? Use the inquiry form to ask.

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Features

  • Wide Infrared Transparency: Ideal for 3–5 µm mid-IR applications
  • Excellent Thermal Conductivity: Enhances optical stability under thermal load
  • Low Density: Suitable for weight-sensitive systems
  • High Surface Smoothness: Precision-polished for optical-grade applications
  • Material Variety: Available in CZ, FZ, and intrinsic silicon types
  • Full-Process Control: In-house growth, cutting, polishing, coating, and dicing
  • Customizable Options: Tailored dimensions and specifications upon request
  • Batch and Custom Production: Scalable for R&D or large-scale deployment

Applications

  • Infrared Optical Windows: Substrates for mid-IR transmission systems
  • Optical Filters: Base material for narrowband and broadband filters
  • Laser Reflectors: Thermally stable and reflective substrate
  • Infrared Thermometry: Sensor components for thermal detection systems
  • Infrared Imaging Lenses: High-precision optical components for imaging systems

Frequently Asked Questions

What makes single crystal silicon suitable for mid-wave infrared applications?
Single crystal silicon offers excellent optical transparency in the 3–5 µm range, making it ideal for mid-wave infrared (MWIR) applications. Its high thermal conductivity and low density also make it well-suited for systems that operate under varying thermal conditions or require lightweight components.
What is the difference between CZ, FZ, and intrinsic silicon wafers?
CZ (Czochralski) silicon wafers are grown using a crystal pulling method and typically contain some oxygen impurities. FZ (Float Zone) silicon wafers are purer, with fewer impurities and higher resistivity, making them suitable for high-performance optical and electronic applications. Intrinsic silicon is extremely pure and undoped, offering optimal optical properties for infrared use.
Can I request customized dimensions or specifications for my application?
Yes, UM Optics provides full customization based on customer requirements. Parameters such as diameter, thickness, surface finish, coating, and flatness can be tailored for specific optical or mechanical needs. Drawings and detailed specs can be submitted for review.
What quality control measures are in place during wafer production?
The entire silicon wafer production process—from material growth to cutting, polishing, coating, and dicing—is conducted in-house under strict quality control protocols. Each wafer undergoes precision inspection to ensure surface flatness, dimensional accuracy, and optical performance.
Are these wafers suitable for both prototyping and high-volume production?
Absolutely. UM Optics supports both batch production for R&D and small-scale testing, as well as large-volume manufacturing. The vertically integrated production line allows for scalable delivery while maintaining consistent quality and competitive pricing.

Got more questions? Use the inquiry form to ask the supplier directly.

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