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Also available in 48 h Express-Service
Beamsplitters split light or laser beams into two optical beam paths. They reflect a specific part of the incident light at an angle of 45° like an optical mirror and simultaneously transmit the remaining light in the 0° direction. The multilayer dielectric thin-film coating we apply to the beamsplitter's input side determines the optical splitting ratio. On the reverse side of the optics, we deposit a broadband anti-reflection layer to eliminate secondary reflections. A so-called "ghost image" or a phantom laser beam, which can occur with beamsplitters without an anti-reflective coating on the back, is avoided. Also, energy loss caused by reflections from the backside of the optics is reduced to a minimum.
Unlike dichroic beamsplitters, such as our SIR filters or SHD mirrors, the DST beamsplitters work neutrally. Instead of separating different optical wavelengths from each other, they split visible light beams neutrally. The non-metallic optical coating of our beamsplitter plates ensures excellent durability and high abrasion resistance. Their dielectric layer system exhibits only negligible optical absorption in the nominal wavelength range. In contrast to metallic beamsplitters that usually absorb a large amount of the incidence light, absorption losses are minimal. DST-beamsplitters can also split laser beams with up to medium laser power. Hence, they work in reference-measurement systems and optical benches.
We designed all our optical DST-beamsplitters for light beams without defined polarization. When using polarized light sources or laser beams, the splitting-ratio may deviate from the specifications given here. We only specify the ratios for random polarization. They are not defined in terms of polarizing effects. However, this does not generally exclude optical applications with polarized light sources. You can often achieve the desired division by selecting a higher or lower already existing splitting ratio. In such cases, the cost is drastically reduced compared to a batch of custom coated beamsplitters.
If you need beamsplitter optics for polarized light or laser beams, please contact us and provide information on your application's wavelength, required splitting-ratio, and other relevant details. We can coat optics with custom ratios according to individual specifications in addition to our standard beamsplitters from the DST300, DST500, and DST700 series. Please use our inquiry form to contact us for technical assistance, further information, or help with your customized beamsplitter optics.
You won't find a shopping cart on our website because we are not limited to standard optics with fixed dimensions. Our company specialized in the rapid manufacturing and delivery of our optical beamsplitters with customized sizes. We often ship tailor-made beamsplitters just as fast or even faster than stock items are shipped usually. Moreover, this also applies to large production quantities! As a rule, you receive our quotation within a few minutes, provided you are in our time zone, and there are no queries.
To get a quote for our broadband optical plate beamsplitters with custom dimensions, please choose a thickness from the table or click the button below.
Enlarge transmission curve of the DST300
Enlarge transmission curve of the DST500
Enlarge transmission curve of the DST700
R:T = 70:30
R:T = 50:50
R:T = 50:50
R:T = 30:70
|Other thicknesses on request.|
|The thicknesses marked with "✔" are also available within 48–h Express Service.|
Note: If you are searching for cube-beamsplitters, beamsplitter-prisms, non-polarizing beamsplitter cubes, or beamsplitters for another wavelength area, please send us a detailed request with all specifications and requirements. Such kind of components is always custom made and require minimum batch quantities.
All given details and specifications are mean reference values and are not guaranteed. Also, please consider our "Notes on technical specifications".
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