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Beamsplitters

Beamsplitter plates for a 45° angle of incidence

DST Series

Special Properties and Features

Neutral division of visible light sources, images, and laser beams
Broadband AR coating on the backside
No double image or phantom laser beam generation
Dielectric coating
Low energy loss
Designed for random polarization
Large dimensions are available (DST500)

Typical Applications

Reference measurement systems
Laser beamsplitters in optical benches
Splitting or merging of optical beam paths
Sensor technology
Machine vision
Fiber optic applications
3D scanners
Photonics research
Beam splitter plates for optical instruments
Laser beam combiners
Linear optical measurement technology
Robotics and automation
Broadband divider mirrors for imaging applications

Beamsplitter Applications in Different Industries

Beamsplitters find diverse applications across industries, from healthcare to telecommunications. They are pivotal in creating optical systems for laser processing, medical imaging, and spectroscopy. In telecommunications, beamsplitters facilitate signal transmission by separating wavelengths efficiently. Furthermore, in manufacturing, beamsplitters aid in quality control processes by enabling precise measurements using light interference techniques. This versatility showcases the relevance and significance of beamsplitters in advancing various industrial operations.

DST Beamsplitters for Your Optical Task

DST beamsplitters split light beams into two paths in a wide range of optical systems. Like optical mirrors, DST beam splitters reflect part of the incident light at a 45° angle while the remaining light energy is transmitted at 0°, similar to an optical window. This effect is achieved through optical interference.

How are the Beamsplitters constructed?

The construction of the beamsplitters involves a multi-layer dielectric thin film coating on the input side, which Plate beam splitter splitting a laser beam determines reflection and transmission values. Additionally, a broadband anti-reflection coating that is coated on the backside eliminates secondary reflections, prevents ghosting and phantom laser beams, and minimizes losses. Our DST beamsplitters are color-neutral, split visible light linearly, and have minimal light absorption. Due to their purely dielectric layers, they can split up to medium-power laser beams. The coating design offers durability and high abrasion resistance.

What Light Sources is the DST made for?

DST beamsplitters are designed for use with unpolarized light sources. When using polarized light sources such as lasers, the R/T values may differ from the specifications in the datasheet. However, alternative division ratios can be chosen in certain situations to achieve the desired outcome without needing a customized production run. Therefore, using our standard DST beamsplitters can often lead to cost savings, particularly when only small quantities are required.

Customized Beamsplitter Designs

If you need beamsplitters for polarized light, specific lasers, or a particular laser line, don't hesitate to contact us with information on the wavelength of your application, the required R/T, and all other relevant details. In addition to our standard DST300, DST500, and DST700 series, we can coat beamsplitters with division ratios to individual specifications. Please use our inquiry form to request assistance or more information, or to help design your custom-coated beam splitter.

How do I order the DST Plate Beamsplitters?

Here at our company, we specialize in manufacturing and delivering custom-sized optics at a rapid pace. We often fabricate and ship our beamsplitters faster than distributors can ship their catalog items from stock. This quick delivery is usually possible for larger quantities as well! Typically, you will receive our offer within a few minutes of your request, provided you are in our time zone, and no questions need to be clarified.

Please select a beamsplitter from the table on this page, or use the RFQ button below to create your inquiry.

RFQ

48-hour express manufacturing

Specifications

DST300 beamsplitter

Enlarge the DST300 curve

DST500 beamsplitter

Enlarge the DST500 curve

DST700 beamsplitter

Enlarge the DST700 curve

Standard Thicknesses

Please click on a thickness to receive a quote:

Thickness (mm)	Tolerance
DST300 R : T = 70 : 30
1.00	±0.10	✔
DST500 R : T = 50 : 50
1.00	±0.10	✔
DST500T R : T = 50 : 50
3.30	±0.20	-
DST700 R : T = 30 : 70
1.00	±0.10	✔
Other thicknesses per inquiry.
All DST beamsplitters have an AR-coated backside.
The materials marked with "✔" are available within our 48-hour express manufacturing.

Dimensions

Up to max. 630 mm × 810 mm

Division ratios at 45° angle of incidence

(All data refer to unpolarized light.)

DST300

R/T = 70/30 (± 10%) for 450–650 nm

DST500

R/T = 50/50 (± 6%) for 450–650 nm,
R/T = 50/50 (± 10%) for 430–685 nm

DST500T

R/T = 50/50 (± 10%) for 450–650 nm

DST700

R/T = 30/70 (± 8%) for 450–650 nm,
R/T = 30/70 (± 10%) for 400–700 nm

Other ratios, angles of incidence, and wavelengths are possible on request.

Substrate Materials

Selected float glass
Other substrate materials per inquiry

Flatness

Depending on the material and shape

Surface Quality

Better than 80-50 scratch & dig (MIL-0-13830A)
Other qualities per inquiry

Other Specifications

Adherence according to MIL-C-675 C (tape test)
Abrasion resistance according to MIL-M-13508 C

Note: If you are searching for cube beamsplitters, non-polarizing cube beamsplitters, beam splitter prisms, beam splitter cubes for particular wavelength ranges, or beam splitter penta-prisms, please send us a detailed inquiry with all your specifications and requirements. Such optics are always customized and require larger production quantities.

All details and specifications given are mean reference values and are not guaranteed. Please also consider our "Notes on technical specifications".

Last update: July 03, 2024

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