Plate Beam Splitters Beamsplitter Plate

Plate beam splitters are versatile optical components that consist of an optical flat made of glass or quartz with a special coating that reflects and transmits light. The layer, often a thin metal film, provides an even split ratio of an incoming beam into a reflected and transmitted beam. Plate beam splitters are precisely fabricated to have an extremely flat surface to minimize distortion. They can be made in larger sizes, up to several inches, and provide good efficiency across a broad spectral range from UV to IR. With anti-reflective coatings, transmission and reflection can exceed 90%. Their high precision, versatility, and spectral range make plate beam splitters essential for controlling light in many optical instruments and laser systems.

 

Experience the power of precision with our elite line of plate beam splitters. From premium-grade quartz or optical glass to exacting flatness standards, these optics deliver unparalleled wavefront accuracy across large clear apertures. Our patented multi-layer coatings, applied through high-vacuum physical vapor deposition, enable customizable split ratios with efficiency exceeding 95% across an ultra-broad spectral range from DUV to NIR. We utilize only the most advanced metrology equipment and state-of-the-art fabrication techniques to manufacture beam splitters suited for the most demanding laser-based and quantum optical applications. Insist on the industry-leading quality of our plate beam splitters to take full advantage of your high-power, ultrafast, and quantum light sources. Whether your need is simple 50/50 splitting or complex multi-way divisions at arbitrary ratios, we deliver extraordinary performance tailored to your application. Invest in the finest precision optics to unlock the full potential of your photonic systems.

 

Features

- Extremely flat and parallel optical surfaces

- Uniform optical coatings

- Precise split ratio

- High transmission and reflectivity

- Broad spectral range

- Rugged construction

- Low wavefront aberration

- Low scatter or stray light

- Proper anti-reflective coatings

- Mounting options

- Suitable for high power/energy

 

Parameters

Product name	Plate Beam Splitter
Substrate Material	NBK-7 optical glass
Wavelength Range	400-750nm
Clear Aperture	1-inch diameter
Wavefront Distortion	Λ/10
Beam Deviation	<5 arcmin
Split Ratio	50R/50T±3%
Reflectivity	>90% from 450-700nm
Transmissivity	>90% from 450-700nm
AR Coating Reflectivity	<0.5% per surface
Parallelism	<5 arcsec
Surface Quality	20-10 scratch-dig
Coating Uniformity	>90% over clear aperture
Damage Threshold	500 MW/cm2
Environment	0-90% humidity, vacuum compatible

 

Applications

- Optical interferometry - Splitting and recombining beams for wavefront sensing, metrology, and interferometric microscopy.

- Flow cytometry - Splitting fluorescence and scattering light signals from biological cells.

- Laser pulse duplication - Splitting a single laser pulse into multiple output beams.

- Optical cavity coupling - Introducing light into or extracting light from stable resonator cavities.

- Pump-probe experiments - Splitting laser pulses to create adjustable time delays.

- Holography - Combining objects and reference beams to create holographic interference patterns.

- Photonics testing - Precision calibration of optical power meters.

- Quantum optics - Beamsplitting for quantum entanglement, computing, and communication experiments.

- Flow visualizing - Splitting laser sheet illumination for flow analysis.

- Laser material processing - Creating multiple cut or weld beams from a higher-power laser.

- OCT imaging - Dividing broadband light in optical coherence tomography systems.

 

How does a beam splitter work?

The key is that when the incoming beam strikes the angled optic at a 45-degree angle, part of the light reflects off the front surface while the rest transmits to the back surface. This is achieved through optical interference effects in the nanoscale multi-layer dielectric coatings we expertly apply to the substrate.

 

We optimize the coating thickness and materials to divide the beam into any desired intensity ratio between reflection and transmission. A 50/50 split is standard, but we can customize the ratio according to your exact experiment requirements with high uniformity across the clear aperture.

 

Anti-reflection coatings are added to the entrance and exit surfaces to minimize losses. To avoid distortion of the beam wavefront, the substrate must be extremely flat, and the coatings must be deposited with nanoscale precision.

 

Our unrivaled expertise in thin film optical coatings allows our beamsplitters to manipulate light beams in versatile ways - splitting a single beam into two or more beams of predefined intensity ratios. This enables advanced experiments and instruments for biophotonics, quantum optics, interferometry, and more. Invest in our ultra-precision plate beamsplitter optics to access the full potential of your photonic systems.

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