Beam splitters separate the beam into two orthogonal beams by wavelength, power or polarization. The mechanical qualities of the coated plate or cube and the beam splitter coating determine the characteristics of the divided beams. Depending on the purpose, beam splitters can be made in a variety of shapes, including cube, plate, hexagonal, pentagonal, polarized, unpolarized, or wedge designs with different substrates and reflection/transmission ratios.
Alfa Chemistry can provide custom beamsplitters that operate in the UV, visible and IR bands. All beam splitters are made to your specifications. We can provide flat and cubic beam splitters manufactured to your spectral and dimensional specifications. Our multidisciplinary optics team will collaborate closely with you to guarantee tight criteria are met while still ensuring manufacturability.
Our Customization Capabilities
Alfa Chemistry customizes beamsplitters for the most popular applications in research or prototyping by combining its expertise in producing high-quality optics with optical coatings. Both flat and cubic polarized and unpolarized beamsplitters can be made to order. Additionally, we offer specialized unpolarized beam splitters that divide the beam into a particular reflection/transmission ratio. S polarization is reflected whereas P polarization is transmitted when using polarized beam splitters, which are made to separate incident beams based on their polarization states. We can also provide high extinction ratio polarization beam splitters. With stringent surface quality, angle, size, and flatness criteria, all types of beam splitters are available in a wide range of glass types and sizes.
In order to develop a solution for each customer's particular application, our knowledgeable sales staff closely collaborates with our coating engineers to assess the requirements for beam splitter coating on a case-by-case basis. Our sales staff will walk you through all of the alternatives we have to offer, from sizing to special materials, coatings, and splitting ratios. We will work with you to sort through our options for beam splitter construction, coating, and surface quality in order to achieve the best balance between cost and performance. We recognize that high laser damage thresholds and beam displacement are significant considerations when integrating beam splitters into new optical designs.
| Specification | Limits |
|---|---|
| Dimension | 3 ~ 400 mm |
| Diameter | ±0.05 mm down to ±0.010 mm |
| Surface Roughness | 15Ǻ with the ability to provide below 5Ǻ if requested |
| Surface Quality | 60/40 standard down to 10/5 Laser Quality |
| Center Thickness | ±0.1 mm down to ±0.025 mm |
| Materials | N-BK7, UV-grade fused silica, crown glass, MgF2, CaF2, N-BAK1, etc |
Beam Splitter Classification
- Partial Reflectors: The purpose of partial reflectors is to divide the beam into two pathways of varying intensities. Any beam splitting ratio (R/T), including 95/5, 90/10, 80/20, and 50/50, can be used with these reflectors.
- Polarizers: A polarizer is a beam splitter designed to split a randomly polarized beam into two polarization states. It is necessary for the polarizer to be made to be employed at an angle, commonly 45 or 56 degrees of incidence.
- Cube Beamsplitters: A cube beam splitter can be used to create a polarization beam splitter since the polarization effect of the coating is enhanced when immersed in glass.
- Flat Beamsplitters: Flat beam splitters have advantages over cube beam splitters because they reduce size, weight and complexity.
You can find more information about the different beam splitters below. If you need technical advice, please contact our technical team to learn more about our high-quality services.