close
Choose Your Site
Global
Social Media
loading
| Availability: | |
|---|---|
Uncoated laser window substrates are precision-polished optical windows supplied without anti-reflection or functional coatings. They are widely used in OEM laser systems, photonics assemblies, protective interfaces, and research optics where customers require raw optical substrates for direct use or custom downstream coating.
Band Optics manufactures custom uncoated laser window substrates in a range of optical materials including fused silica, BK7, and sapphire. These substrates can be supplied in standard or custom shapes with tight dimensional tolerances, high surface quality, and precision parallelism for demanding optical applications.
Compared with coated windows, uncoated substrates provide greater flexibility for customers who need material-specific optical performance, customized coating processes, prototype development, or integration into specialized laser assemblies.
Available as uncoated optical substrates for custom coating or direct optical integration
Precision polished surfaces for low scatter and reliable optical performance
Custom sizes, thicknesses, and shapes based on drawing or application requirements
Multiple optical materials available, including fused silica, BK7, and sapphire
Suitable for OEM, laboratory, and industrial laser applications
Tight control of flatness, parallelism, and surface quality
Prototype to volume production support for custom optical manufacturing
Band Optics offers uncoated laser window substrates in multiple materials to support different wavelength ranges, thermal loads, environmental conditions, and cost targets.
UV fused silica is widely used for laser window substrates because of its broad transmission range, low thermal expansion, and stable optical performance. It is a preferred material for UV, visible, and many laser applications requiring good thermal stability.
BK7 is a cost-effective optical glass with good transmission in the visible and near-infrared range. It is suitable for general optical window applications where high-quality polishing and economical production are required.
Sapphire is valued for its exceptional hardness, durability, scratch resistance, and temperature tolerance. It is commonly selected for harsh environments and applications requiring strong mechanical performance.
Additional optical materials may be available based on project requirements, drawing specifications, or application environment.
We support custom manufacturing based on optical design, mechanical requirements, and application environment. Uncoated laser window substrates can be produced according to standard dimensions or customer drawings.
Shape: round, square, rectangular, and custom geometry
Size / Diameter: custom dimensions available
Thickness: custom thickness options based on design needs
Surface Quality: options such as 60/40, 40/20, or per requirement
Flatness: custom flatness levels available
Parallelism: controlled for optical alignment applications
Clear Aperture: specified according to design
Edge Finish: chamfered or custom edge treatment available
Material: fused silica, BK7, sapphire, and other optical materials
Coating Status: supplied uncoated for direct use or downstream coating
Parameter | Typical Capability |
|---|---|
Product Type | Uncoated Laser Window Substrate |
Materials | UV Fused Silica, BK7, Sapphire, Custom Materials |
Shape | Round, Square, Rectangular, Custom |
Wavelength Suitability | Depends on substrate material |
Surface Quality | Custom options available |
Surface Flatness | Custom options available |
Thickness Tolerance | Controlled per drawing |
Parallelism | Controlled for precision optical use |
Clear Aperture | Per specification |
Edge Finish | Chamfer / Ground / Custom |
Coating | Uncoated |
Manufacturing | OEM / Custom Production |
Uncoated laser window substrates are used in a variety of optical and photonics systems where optical clarity, dimensional precision, and material flexibility are important.
Laser transmission systems
Used where precision optical windows are required to transmit laser energy through a controlled interface.
Protective laser windows
Installed to shield sensitive internal components from dust, debris, or environmental exposure while maintaining optical performance.
OEM optical assemblies
Integrated into custom laser modules, beam delivery systems, and photonics devices requiring substrate-level customization.
Research and laboratory optics
Suitable for prototyping, coating development, and experimental optical setups.
Industrial optical systems
Used in optical instruments and laser equipment where custom size, flatness, and durability are required.
Band Optics supports custom manufacturing of optical window substrates through in-house processing and quality control procedures.
Optical material cutting
Precision grinding and polishing
Custom shaping and sizing
Prototype and small-batch support
Volume OEM production
Dimensional measurement
Surface quality inspection
Flatness and parallelism inspection
Clear aperture verification
Visual and cosmetic quality control
Our manufacturing workflow is designed to support custom optical projects from initial sampling to production delivery.
Choosing between uncoated and coated laser windows depends on the application, wavelength requirements, reflection control needs, and downstream process plan.
You need raw substrates for your own coating process
You want material flexibility before final optical treatment
You are developing prototypes or custom optical assemblies
Your application does not require coating at the current stage
You need lower surface reflection
You require wavelength-specific anti-reflection performance
Your system design depends on higher transmission efficiency
You want ready-to-install finished optical windows
If you are unsure which option fits your application, our team can help evaluate the best material and manufacturing approach.
Uncoated laser window substrates are precision optical windows supplied without surface coatings. They are used as raw optical elements for direct integration or custom coating.
Common materials include UV fused silica, BK7, and sapphire. Other materials may be available depending on the project.
Yes. We support round, square, rectangular, and custom shapes based on drawings or specifications.
Yes. Uncoated substrates are often selected specifically for downstream anti-reflection, dielectric, or other custom coating processes.
Surface quality can be customized according to project requirements, including standard and precision cosmetic specifications.
Yes. Flatness and parallelism can be controlled according to optical and mechanical requirements.
The best material depends on wavelength range, thermal load, durability requirements, and cost target. Fused silica, BK7, and sapphire each offer different advantages.
Yes. We support prototype, pilot, and volume production for OEM optical and laser system manufacturers.
To quote efficiently, please provide material, dimensions, thickness, surface quality, flatness, quantity, and drawing if available.
You can contact Band Optics with your specifications, application details, and drawings for engineering review and quotation support.
