AMS Technologies provides a range of disk-shaped optical beamsplitters made of various optical materials. Infrared (IR) beamsplitters with a splitting ratio of 50R/50T (50% reflectance, 50% transmission) are available based on Calcium Fluoride (CaF2) for a SWIR to MWIR wavelength range of 1.5 to 5 µm or a broader IR wavelength range of 2 to 8 µm, as well as based on Zinc Selenide (ZnSe) for a wavelength range of 7 to 14 µm. Optical grade silicon is the base material for our disk-shaped optical beamsplitter polarizer, optimized for the wavelength range of 4 to 11 µm.
Disk-shaped dichroic beamsplitters are also part of our portfolio, used to separate wavelengths in the visible domain (VIS, 400 to 700 nm) from those in the infrared domain (IR, 3 to 12 µm) or conversely combine two beams with different wavelengths into one beam. While the gold-based dichroic beamsplitters transmit visible wavelengths and reflect infrared wavelengths, the platinum-based dichroic beamsplitters reflect VIS and transmit IR.
The range of broadband polarizing cube beamsplitters provides efficient polarization for use with multiple or tunable sources. Each beamsplitter consists of a pair of precision right-angle prisms carefully cemented together to minimize wavefront distortion. Due to multiple requests for a very accurate beamsplitter, we offer standard precision cube beam splitters with angles good down to 1 arcmin and surfaces flat to λ/10, suitable for wavelength ranges either in the visible or the infrared spectrum.
If you can’t find a standard beamsplitter that exactly meets your specific performance, please get in touch with the AMS Technologies beamsplitter experts to discuss your customized beamsplitter solution. We can deliver tailored devices based on a tight cooperation with highly experienced partners in the specification, design and manufacture of custom beamsplitters using patented fluid jet polishing (FJP) technology, which allows the adjustment of the beamsplitter’s shape and flatness to within a few nanometers.
Together with our partner, we help you sorting out the specifications of your customized beamsplitter regarding key parameters like wavelength range, polarization or physical size requirements. For instance, P polarization is much more inclined to transmit at large angles (in the 45° range). The challenge for coating designers is to adjust the transmission of the two polarizations to meet the specific requirements of your custom beamsplitter.
Also, if the beamsplitter will be used inside an interferometer, you may need to consider path length and phase matching requirements. A deep understanding and knowledge of your application is key to support you in the specification of all parameters. Do not hesitate to contact AMS Technologies to discuss all details around you requirements for a custom beamsplitter in detail!
Complementing our optical beamsplitter offering, we carry a broad range of complementary precision optics such as polarization optics, optical prisms, optical mirrors, optical filters, optical lenses, etalons or optical scanners and deflectors.
Our beamsplitters can be used with our broad portfolio of lasers and light sources ranging from laser diodes, modules and systems to DPSS lasers, diode lasers, fiber lasers and gas lasers to OPOs, tunable lasers and other laser and light sources.
Optical beamsplitters are optical components splitting an incident light beam into two parts. Optical beamsplitters take on many forms: cubes, plates, hexagons, pentagons, polarizing, non-polarizing (usually somewhere in between), narrowband, broadband, dielectric, air-spaced, metal, cemented, optically contacted (epoxy-free bonding), a.s.o.
Dichroic beamsplitters decompose the beam into two spectral ranges. For one (passing) beam, the dichroic beam splitter acts as a filter, whereas for the other, reflected beam, it acts as a mirror. Conversely, dichroic beam splitters can also be used to combine two beams of different wavelengths into one beam. In most cases, the splitter is positioned at a 45° angle to the incident beam.
Dichroic beamsplitters reflect the light of one wavelength with very low loss compared to reflection on metal surfaces and are therefore often used in laser technology. They can be used with very high laser powers, where metal mirrors would be damaged, as less power is absorbed in the beamsplitter.
Some of the key parameters of optical beamsplitters are wavelength range, grade of reflectance and transmittance for relevant wavelengths, reflection to transmission ratio, polarization, surface finish and physical size data like diameter and thickness.
Alternative Terms: Beam Splitter; IR Beam Splitter; Infrared Beam Splitter; Dichroic Beam Splitter; Polarizing Beam Splitter; Cube Beam Splitter; Disk-shaped Beam Splitter