A grating is a very important optical element that can periodically spatially modulate the amplitude or phase of the incident light. Alfa Chemistry has been closely collaborating with our clients to create unique grating-based solutions for them over the past few years. According to the needs of the customer, we can create gratings, markers, and resolution charts specifically for them.
Please feel free to choose us. Alfa Chemistry will work with you to provide a bespoke optical component for your application, regardless of the substrate, size, or totally unique pattern to be etched or deposited on the substrate.
Our Custom Capabilities
- Diffraction Gratings: Its purpose is to divide light into various wavelengths or sequences. To fulfill your application demands, Alfa Chemistry offers scribing, holographic, and shine diffraction gratings. Depending on the application, diffraction gratings may operate by transmission or reflection.
- Bar Charts: They typically consist of chromium patterns in space and isometric lines placed on a glass substrate. Bar gratings can be used to make moiré patterns and for optical test procedures like Ronchi reflector testing. Line pairs per millimeter, or lp/mm, is a measurement of line spacing.
- Graticules: They are optical elements having unique patterns—often scales or crosshairs—deposited by photolithography on the substrate, and are sometimes known as reticules.
- Resolution Charts: Alfa Chemistry's charts are used for resolution testing. Custom patterns are applied depending on the specification and the spatial frequency of the application.
Patterns can be deposited on optics such as windows, filters, and prisms using glass substrates depending on the application, for example, calcium fluoride can be used for applications from UV to IR. Alfa Chemistry also offers anti-reflective coatings that can be used to improve performance at particular wavelengths.
Our typical customization capabilities change depending on the type of component. Please get in touch with our technical staff and let them know about any extra custom designs you may have.
Metrology Capabilities
Testing optical parts at each level of the customization process is highly important to Alfa Chemistry. This is so that we can identify problems and make the necessary corrections at later stages of customization. Our metrology capabilities include, for example, slope error measurements using interferometry and long-track profilometry, micro-roughness using microscopy and interferometric microscopy, reflectance measurements and efficiency measurements as well as grating mapping EUV to IR.
Why Choose Us
- Optical Design: Alfa Chemistry's optical design team leverages the expertise of customers to achieve the highest performance.
- Superior performance: > 90% diffraction efficiency, low stray light. Alfa Chemistry's custom diffraction gratings offer superior diffraction efficiency and improved stray light performance.
- Development Flexibility: In-house design and development capabilities allow us to develop state-of-the-art custom solutions.
- Superior Customization: High-quality custom diffraction gratings with repeatable performance. We have passed international certification standards and proudly customize all optical components for our customers.
If you need technical advice, please contact our technical team to learn more about our high-quality services.