Research request: 200mm optical sapphire windows, 1.25mm thickness, plane/flat profile, surface flatness approximately λ/4 at 633nm, and scratch-dig surface quality of 40-20.
Optical Sapphire Windows for Research and Production
Optical sapphire windows are used when researchers need a transparent, durable, and thermally stable window material for high-power electronics, LEDs, UV optics, infrared systems, vacuum equipment, microfluidics, aerospace hardware, and harsh-environment sensors. Sapphire offers excellent optical transmission, high hardness, chemical resistance, and strong performance in demanding research and production environments.
UniversityWafer, Inc. supplies sapphire wafers, optical sapphire windows, and custom sapphire substrates in many diameters, thicknesses, orientations, and polish options. Researchers can request C-plane, A-plane, R-plane, or M-plane sapphire depending on the application.
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How Strong Are Sapphire Windows?
Sapphire windows are among the strongest transparent materials used in research and production. Sapphire is extremely hard, scratch resistant, chemically stable, and capable of operating in environments where standard glass, quartz, or plastic optical windows may fail.
Because sapphire has a wide optical transmission range from UV through near-infrared wavelengths, it is used in optical systems where clarity, durability, and resistance to radiation darkening are important. Sapphire windows are commonly used in aerospace, defense, medical research, microfluidic devices, high-temperature equipment, LED manufacturing, and semiconductor processing.
Common Optical Sapphire Applications
- UV optical windows and infrared sapphire windows
- High-power electronics and LED manufacturing
- Microfluidic devices and medical research
- Vacuum equipment and plasma systems
- Aerospace, defense, and radiation-resistant optics
- Optoelectronic and microwave device research
- Scratch-resistant transparent covers and sensor windows
Epi-Ready Sapphire vs. Optical Sapphire Windows
Optical sapphire windows and epi-ready sapphire wafers are both made from single crystal sapphire, but they are polished and specified for different applications. Epi-ready sapphire is typically prepared by CMP polishing with very low surface roughness for epitaxial growth, while optical sapphire is polished for high transparency, optical clarity, and window performance.
For example, a 50.8mm DSP C-plane sapphire wafer with a C-M 0.2° offcut and surface roughness below 0.3nm is designed for epitaxial growth. An optical sapphire window may have surface roughness below 1nm and is optimized for UV, visible, or infrared transmission rather than epitaxy.
200mm Optical Sapphire Windows
A corporate researcher requested 200mm optical sapphire windows for research and production. Large-diameter sapphire windows are used when researchers need a transparent, strong, chemically resistant, and thermally stable material for optical, vacuum, semiconductor, and high-power applications.
Reference #262108 for specs and pricing.
What Are Optically Transparent Sapphire Wafers?
Optically transparent sapphire wafers are single crystal aluminum oxide substrates used as durable transparent windows, optical substrates, and insulating wafers. Sapphire combines excellent optical transmission with high hardness, strong thermal stability, chemical resistance, and electrical insulation.
Sapphire is used in UV windows, IR windows, high-power electronics, LED manufacturing, optoelectronics, microwave devices, vacuum equipment, and harsh-environment optical systems. Compared with standard glass, sapphire offers much higher mechanical strength and improved resistance to scratching, heat, and chemical attack.
Why Use Sapphire as an Optical Window?
Sapphire is selected for optical windows when researchers need a material that can survive demanding operating conditions. Its wide transmission range, high hardness, low dielectric loss, and strong thermal performance make it useful for optical systems where ordinary glass, quartz, or polymer windows may fail.
- Excellent optical transmission from UV through infrared wavelengths
- High hardness and scratch resistance
- Strong thermal stability for high-temperature environments
- Good thermal conductivity compared with many optical materials
- Excellent chemical and corrosion resistance
- Electrical insulation for optoelectronic and microwave applications
- Useful in vacuum, plasma, medical, military, and aerospace environments
Optical Sapphire Wafers for LEDs and Electronics
Sapphire wafers are widely used in the optoelectronics and microelectronics industries. Unlike silicon wafers, sapphire is electrically insulating and optically transparent, making it valuable for LEDs, RF devices, microwave ICs, photonics, sensors, and high-power electronics.
Sapphire wafers can be supplied in different orientations, thicknesses, diameters, and polish options depending on whether the application requires epitaxial growth, optical transparency, mechanical strength, or electrical insulation.
Sapphire Optical Window Applications
- UV optical windows
- Infrared sapphire windows
- Blue LED manufacturing
- High-power electronics
- Microwave IC applications
- Vacuum equipment windows
- Mechanical wear parts
- Medical and microfluidic devices
- Aerospace and defense optics
- Harsh-environment sensors
Available Sapphire Wafer Orientations
UniversityWafer, Inc. supplies optical sapphire windows and sapphire wafers in multiple crystal orientations for research and production.
Custom Optical Sapphire Windows
UniversityWafer, Inc. supplies sapphire windows from small custom pieces to large 200mm optical sapphire substrates. Available options include round windows, diced pieces, thin sapphire, DSP sapphire, optical polish, custom thickness, and orientation-specific sapphire wafers for UV, visible, IR, LED, vacuum, and semiconductor research applications.