- Round, rectangular, elliptical or any other shape including cut-outs and drill holes
- AR coated for 45° or some other specified incident angle
- Suitable for high energy laser applications where cemented cubes may fail
Beamsplitter plates are thin optical glass plates to split a light beam (usually) at 45 ° incidence into two partial beams.
| wdt_ID | wdt_created_by | wdt_created_at | wdt_last_edited_by | wdt_last_edited_at | Specifications | Available Quality |
|---|---|---|---|---|---|---|
| 6 | benjamin | 28/04/2026 10:28 AM | benjamin | 28/04/2026 10:28 AM | Range of dimensions | 2mm-400mm |
| 7 | benjamin | 28/04/2026 10:28 AM | benjamin | 28/04/2026 10:28 AM | Highest available surface figure | λ/10 (DIN: 3/0.2) |
| 8 | benjamin | 28/04/2026 10:28 AM | benjamin | 28/04/2026 10:28 AM | Highest available surface quality | 20-10 S/D (DIN: 5/1×0.06) |
| 9 | benjamin | 28/04/2026 10:28 AM | benjamin | 28/04/2026 10:28 AM | Wavelength range | single wavelength (all types) or broadband (unpolarized only) |
| 10 | benjamin | 28/04/2026 10:28 AM | benjamin | 28/04/2026 10:28 AM | Highest available tolerance of beam deviation | 2″ (arcsec) |
Superior Durability: Custom Beamsplitter Plates Engineered for 45° Incidence and High-Power Lasers
The beamsplitter (BS) plate is a thin optical glass plate. The first face is coated with an all-dielectric thin film having partial reflection properties. The second surface is AR coated for 45° or some other specified incident angle. As an alternative, the second surface may be angled with respect to the front surface (wedge) in order to avoid interference effects. In this case, the direction of the transmitted beam is not parallel to the input direction and the beam shape is slightly distorted.
This beamsplitter may also be designed for low absorption and high damage threshold, suitable for high energy laser applications where cemented cubes may fail.
We provide three kinds of beamsplitter plates, distinguished by the polarization of the incoming and outgoing beams. Unpolarized BS plates (narrow band and broad band), generate partially polarized outgoing beams for randomly polarized incoming light. Polarized plates (narrow band only) generate both s-polarized and p-polarized beams from randomly polarized incoming light. For non-polarizing beamsplitter plates (narrow band only), the polarization of the outgoing beams remains the same when the incoming beam is 45° linearly polarized or circularly polarized. The functional features of these designs are similar to the respective cube polarizers.
Beamsplitter Plates can be manufactured in almost any shape: round, rectangular, elliptical, or any other shape including cut-outs and drill holes. Holes may also be drilled at an angle to the surface normal.
Why Choose Artifex Beamsplitter Plates
Wherever high-energy laser durability, precise polarization control, and design flexibility are essential, beamsplitter plates deliver an extremely resilient, high-damage-threshold solution. Available in unpolarized, polarized, and non-polarizing configurations, with custom shapes, drill hole geometries, and coating designs to meet your system’s exact optical and mechanical requirements.
Interferometry
Split a coherent source into reference and measurement arms with well-defined amplitude ratios, supporting precise phase and displacement measurements in Michelson, Mach-Zehnder, and related interferometer configurations.
Laser System Beam Sampling and Power Monitoring
Divert a small, defined fraction of a laser beam to a photodetector for real-time power monitoring or feedback control, while the majority of the beam continues along the primary optical path undisturbed.
Microscopy and Fluorescence Imaging
Enable simultaneous illumination and detection paths in epi-fluorescence and confocal microscopy systems, directing excitation light toward the sample while transmitting emitted fluorescence to the detector.
Optical Communication and Signal Distribution
Divide optical signals across multiple detection or transmission channels in free-space optical communication systems, supporting redundancy or parallel signal processing.
Holography and Interference Pattern Generation
Combine or divide coherent beams with controlled amplitude ratios to generate stable interference patterns for holographic recording and diffractive optical applications.
Spectroscopy and Analytical Instrumentation
Split incoming light between a reference detector and a sample measurement path, supporting accurate relative intensity measurements in absorption, reflectance, and Raman spectroscopy setups.
Camera and Viewfinder Optical Systems
Divert a portion of incoming light to auxiliary sensors — such as autofocus or metering detectors — while preserving the primary image path for the main imaging sensor.
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