Cube Beamsplitters for Laser and Imaging Systems

Custom Beamsplitters: PBS & Non-Polarizing Cubes and Plates – Tempotec

Custom Beamsplitters: PBS & Non-Polarizing Cubes and Plates – Tempotec

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Sold by: Tempotec Optics Co., Ltd. Ships from: China
Specifications
Material: N-BK7, UV Fused Silica (UVFS), IR Grade Fused Silica (IRFS), Fused Silica, CaF2
Size (Linear Dimension): Not Specified
Design Wavelength Range: 150 – 8000 nm
Surface Quality S1/S2 (Scratch-Dig): 10-5, 20-10, 40-20, 60-40, 80-50, Commercial Polish
Transmitted Wavefront Distortion (TWD): <= Lambda/10, <= Lambda/8, <= Lambda/6, <= Lambda/4
X-Cube Beamsplitter

X-Cube Beamsplitter

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Sold by: Sinoptix Ships from: Belgium
Specifications
Material: N-BK7
Size (Linear Dimension): 4 mm
Design Wavelength Range: 350 – 2000 nm
Max Beam Deviation: 1 arcmin
Dimensions: Custom
Non-Polarization Beamsplitter Cube

Non-Polarization Beamsplitter Cube

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Sold by: MOK Optics Co LTD Ships from: China
Specifications
Material: N-BK7, UV Fused Silica (UVFS), H-K9L, SF5, Fused Silica
Size (Linear Dimension): 5 mm
Design Wavelength Range: 400 – 1100 nm
Max Beam Deviation: 3 arcmin
Surface Quality: 40-20

Did You Know?

Cube Beam splitters are used to split the light into two separate components and are used in life sciences and laser applications. They consist of a pair of right angled prisms carefully cemented together to minimize wave front distortion. The thickness of the cementing layer can be carefully chosen to render the desired split ratio. Polarizing cube beam splitters split the unpolarised light into s-polarization and p-polarization states, while non-polarising ones leave it intact.

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Frequently Asked Questions

A cube beamsplitter consists of two right-angle prisms cemented or optically contacted together at their hypotenuse faces, with a partial reflective coating on the internal interface. An incident beam entering one face of the cube is partially transmitted and partially reflected at this coated interface, producing two output beams with a defined intensity ratio. The cube geometry keeps the output beams at fixed 90° relative angles and provides good mechanical robustness and alignment stability compared to plate beamsplitters.

Overview of Cube Beamsplitters

Cube Beamsplitters are compact optical components that split an incident beam into transmitted and reflected paths using two right-angle prisms cemented or optically contacted together. One internal face is coated with a partial reflector or polarization-sensitive coating, enabling precise control of power distribution while maintaining a robust, alignment-stable form factor.

On FindLight, Cube Beamsplitters are available for a range of wavelength bands, polarizations, and split ratios, making them suitable for interferometry, beam sampling, imaging, and laser routing in laboratory and OEM setups.

Typical Specifications of Cube Beamsplitters

Common parameters for Cube Beamsplitters include:

  • Wavelength range: UV (e.g., 355 nm), visible (400–700 nm), NIR (700–1600 nm), and application-specific laser lines.
  • Split ratio: Neutral 50:50, 30:70, 70:30, or custom ratios specified for either average or at a design wavelength.
  • Polarization type: Non-polarizing cube beamsplitters, polarizing cube beamsplitters (PBS) with specified extinction ratio, or polarization-maintaining variants.
  • Clear aperture and size: Standard cube sizes (e.g., 5 mm, 10 mm, 25.4 mm) with defined clear aperture and edge chamfers.
  • Surface quality and flatness: Typical values such as 20-10 scratch-dig and λ/8 or better at the design wavelength.
  • Damage threshold: Specified for CW and pulsed lasers, critical when using Cube Beamsplitters in high-power systems.
  • Substrate and adhesive: BK7 or fused silica substrates, with options for optical contacting to avoid organic cement in high-power or UV applications.

Use Cases and Selection Guidance

Cube Beamsplitters are widely used in laser diagnostics, feedback loops, Michelson interferometers, dual-path imaging systems, and beam delivery networks. Their cubic geometry simplifies mechanical mounting and angular alignment compared to plate beamsplitters, while reducing beam offset.

When comparing Cube Beamsplitters on FindLight, buyers should match the coating design to the operating wavelength, confirm split ratio tolerances, and verify polarization behavior against system requirements. For laser applications, review the damage threshold and absorption characteristics, especially for short-pulse or high-average-power sources. Mechanical constraints such as cube size, clear aperture, and mount compatibility also affect integration.

Each listing on FindLight provides detailed specifications so you can systematically evaluate Cube Beamsplitters across multiple vendors. Use the platform to request quotes and technical clarifications directly from manufacturers; no registration is required to initiate supplier contact or to shortlist components.