Flat transparent substrates with maximal light transmission in a certain wavelength range are known as optical windows. Typically, optical windows serve as a barrier of defense for extremely delicate sensors in the outside world. For many different industries, Alfa Chemistry has been at the forefront of providing precise, high-quality optics. We supply optical windows with the highest performance over the deep UV to near IR wavelength range. We have experience creating optical windows to meet our customers' needs in addition to supplying off-the-shelf options.
Our knowledgeable staff of experts has years of experience in designing custom optical windows that satisfy the demands of your particular project. We employ materials like fused silica and optical glass to create optical windows in a range of sizes and configurations. In addition we utilize a variety of coating techniques to provide the optimal coating for each window application, capable of transmitting the desired wavelength and reflecting all unwanted wavelengths. We achieve this by paying close attention to every detail, carefully considering your needs, and creating unique optical windows that meet or surpass your requirements.
Our Capabilities
Alfa Chemistry can work with UV, visible, near infrared, and high power laser windows. It's crucial to pick the correct substrate material. We can meet your needs for quick delivery at cheap pricing because to our sizable on-site raw material inventory. Available materials include:
- Crystalline quartz, UV fused silica, UV fused calcium fluoride, and UV fused magnesium fluoride are examples of UV materials.
- Sapphire, borosilicates, float glass, and BK7 and other like glasses are examples of visible materials.
- Germanium, silicon, zinc selenide, sulphide glasses, and infrared fused silica are examples of infrared materials.
Alfa Chemistry is capable of processing a wide variety of optical materials for use in the ultraviolet, visible and infrared wavelength regions. We are ready to help specify or recommend material selection based on cost and performance to suit your specific application.
Alfa Chemistry offers a variety of sheets that can be customized to the needs of the customer. The substrates and coatings that are offered for our flat standard glass are listed in the following table.
| Materials | Coatings |
|---|---|
| Polymethyl methacrylate (PMMA) | 2 sides AR coated; R(avg) < 1% @ 400-700nm |
| B270 | Uncoated 1 side AR coated; R(avg)<0.5% @ 450-900nm 2 sides AR coated; R(avg) < 0.5% @ 450-900nm 1 side AR coated; R(avg) < 0.5% @ 1050-1700nm 2 sides AR coated; R(avg) < 0.5% @ 1050-1700nm |
| Borosilicate | Uncoated 1 side AR coated; R(avg) < 2% @ 400-1000nm 2 sides AR coated; R(avg) < 2% @ 400-1000nm |
| Opti-white (low iron) | 1 side AR coated; R(avg) < 1.5% @ 425-680nm 2 sides AR coated; R(avg) < 1.5% @ 425-680nm |
The Alfa Chemistry Advantage
The optical windows produced by Alfa Chemistry go through a stringent production procedure that enables them to function dependably in a range of harsh situations. Each optical window is individually designed to satisfy or surpass your needs. We are able to produce optical windows that adhere to stringent requirements, including:
- High aspect ratios
- Advanced thin film coatings
- Precise wedge tolerances
- High bending strength
- High laser-induced damage threshold
- Outstanding transmission wavefront error
- Complex geometry
If you need technical advice, please contact our technical team to learn more about our high-quality services.