High-Precision Light Splitting & Combining

A beamsplitter (beam splitter) is a precision optical component used to divide a beam of light into two paths—or work in reverse as a beam combiner to merge multiple beams into one. These versatile optics are essential in laser systems, semiconductor manufacturing, biomedical imaging, metrology, and a wide range of photonics applications.

Avantier offers a broad selection of plate and cube beamsplitters, including polarizing, non-polarizing, and dichroic designs. Each beamsplitter is engineered with advanced anti-reflection (AR) coatings to reduce ghosting, minimize stray light, and ensure high transmission and reflection efficiency across the intended wavelength range.

We also specialize in custom beamsplitters tailored to unique system requirements. Manufactured from high-quality optical glass with tight surface-quality tolerances, our beamsplitters deliver exceptional performance, stability, and durability. Whether you need standard components or a custom solution integrated into a complex optical system, Avantier provides reliable, high-performing optical beamsplitters designed for demanding applications.

Application Spotlight: Quad-Channel Beam-Split Imaging Optical System

At Avantier, we don’t just manufacture premium beamsplitters—we engineer complete optical assemblies that demonstrate the full potential of our beam-splitting technologies. One such example is our quad-channel beam-split imaging system, designed to convert a single optical path into four precisely synchronized imaging channels. Built for ultrafast and high-speed diagnostics, this system leverages advanced beamsplitter coatings, tight optical-axis control, and broadband UV-VIS performance to deliver exceptional imaging uniformity and channel matching. It is an ideal solution for customers working in ultrafast physics, combustion research, ballistics testing, and other applications requiring simultaneous multi-frame or multi-wavelength capture.

Technical Specifications

Parameter

Specification

Operating Spectral Range

300 – 700 nm (UV–VIS)

Number of Channels

4 (quad-channel split-frame)

Field-of-View Consistency

≥ 99.5% across all channels

Illumination Uniformity

≤ 5% deviation

Optical Architecture

Beam-split multi-channel imaging system

Key Features

High alignment stability, broadband coatings, low stray light, matched relay paths

Typical Applications

Ultrafast imaging, combustion diagnostics, ballistic impacts, material dynamics, microfluidics

Dichroic Beamsplitters: These specialized optical filters polarize electromagnetic radiation through anisotropic absorption. They efficiently transmit light with desired polarization states while absorbing the rest. Dichroic beam splitters split incident light by wavelength, making them ideal for fluorescence applications and other scenarios where specific wavelength separation is crucial. At Avantier, we take pride in manufacturing top-notch dichroic polarizers with steep edges and flat, high reflection and transmission bands.

Beamsplitters, Dichroic Beamsplitters

Dichroic Polarizer: Avantier specializes in manufacturing high-quality dichroic plate beamsplitters using a unique design and proprietary manufacturing approach. These beam splitters have steep edges, flat high reflection and transmission bands, and minimize stray light in imaging systems. Avantier offers customization options to meet different wavelength ranges, making their dichroic polarizers adaptable to specific applications.

Dichroic Polarizer, Beamsplitters

Polarizing Beamsplitters: These thin film cube Beamsplitters combine the advantageous characteristics of Laser Polarizing Beamsplitters with the added benefit of the broadband application. Within the cube, the polarizing film remains fully protected, ensuring durability and ease of use.  Polarizing beamsplitter is designed to handle polarized light, making them essential in various optical systems where polarization control is required.

Laser Polarizing Beamsplitters Cube, Beamsplitters

Non-Polarizing Beamsplitters: Avantier stands as a leading supplier. Our Non-Polarizing Beamsplitters cover a wide range, catering to the Visible (400-700nm), NIR (700-1100nm), and Telecom (1100-1620nm) spectra. The metallic/dielectric hybrid coating employed in these Beamsplitters offers low polarization dependence, resulting in the transmission and reflection for S- and P-polarization states being within a mere 6% difference. Additionally, their spectral flatness across specified wavelengths makes them ideal for use with various laser wavelengths.

Non-Polarizing Beamsplitters

Laser Line Polarizing Cube Beamsplitters:  Avantier crafts thin film polarizers designed to elevate the performance of your laser systems. These cube beamsplitters are meticulously constructed with a stack of plane surfaces, leveraging the polarization that occurs upon reflection to achieve remarkable results.

Laser Line Polarizing Cube Beamsplitter

Laser Line Polarizing Plate Beamsplitter: Avantier’s laser line plate beamsplitters offer a 50R/50T ratio, polarization insensitivity, durability, premium coatings, and high substrate quality, making them ideal for various laser systems, ensuring precision and reliability with high-caliber substrate materials.

Laser Line Polarizing Plate Beamsplitter

Laser Line Non-Polarizing Plate Beamsplitter: Avantier specializes in customized laser line non-polarizing plate beamsplitters, with a 50R/50T ratio, which are versatile for laser systems, microscopy, and imaging due to insensitivity to beam polarization, various sizes, high damage thresholds, and quality coatings.

Laser Line Non-polarizing Plate beamsplitter

Narrowband Beamsplitter Cube: A narrowband beam splitter cube is an optical device used to split a beam of light into two or more separate beams based on the wavelength or frequency of the light. It is designed to work within a specific, narrow range of wavelengths, typically in the visible or near-infrared spectrum. Beam splitter cubes are commonly used in various optical instruments and applications, including microscopy, spectroscopy, and laser systems.

Narrowband Beamsplitter Cube, Custom Narrowband Beamsplitter Cube, Beamsplitter Cube, Beamsplitter Cubes, Narrowband Beamsplitter Cubes

Other Types: Lateral Displacement Beamsplitters divide beams into parallel beams with precision, while Laser Beamsplitters separate laser beams into sectors. Beamsplitters are optical components used to split light by wavelength, and their precise control over light manipulation makes them indispensable in various high-tech applications. Laser beam combiners are another critical application, merging beams for enhanced performance in laser systems.

Custom Beamsplitters

Avantier’s comprehensive range of Beamsplitters, including Dichroic, Polarizing, and Non-Polarizing, offers exceptional performance and reliability for various applications in the manipulation of electromagnetic radiation. With our advanced designs and proprietary manufacturing techniques, we ensure that our customers receive top-notch optical components that meet their specific requirements. Contact us for personalized designs catering to your needs.

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