Polarizing Beam Splitters

Our polarizing beam splitters leverage advanced birefringent optics to split a single beam into two orthogonal polarized beams. Crafted from precisely oriented crystal materials, they take advantage of the fact that orthogonal polarizations travel at different velocities in anisotropic media. Refraction allows the single input beam to be physically separated into distinct s- and p-polarized output beams. Being able to filter light based on the polarization state makes our polarizing beam splitters indispensable for polarization control. They enable critical applications across quantum and classical optics, from purifying laser light to advanced interferometry. With decades of experience, we've mastered the design of hybrid crystal elements and nano-engineered coatings to deliver optimal performance over tailored bandwidths. Invest in our polarizing optics to unlock the full potential of your polarized beam instruments and experiments.

 

Get uncompromising polarization purity with our superior polarizing beam splitters. Precision-engineered from exclusive birefringent crystal materials, our polarizers separate unpolarized light into s- and p- components with crisp extinction ratios. Optimized crystal axis orientations, cut angles, and AR coatings deliver optimized performance across customized bandwidths for unbeatable polarization filtering. Experience crystal-clear optical transmission and precise polarization control for quantum optics, interferometry, and fiber optic instruments. Rigorously tested and exceeding 25 waves/inch surface accuracy, our ultra-precision polarizing optics enable the full potential of your polarized beam experiments. Insist on the proven quality of our industry-leading polarizing beam splitters for polarization performance that speaks for itself.

 

Features

- High extinction ratio

- Broad spectral bandwidth

- High transmission efficiency

- Low wavefront distortion

- Durable optical coatings

- Precise crystal orientation

- Ultra-flat optical finish

- Compact and stable

- Customizable dimensions

 

Parameters

Product name	Polarizing Beam Splitter
Spectral Range	400-850nm
Transmission Efficiency	>95% for P-polarization
Wavefront Error	<λ/4 peak-to-valley
Coating Durability	Withstands 95% humidity and MIL-STD abrasion
Surface Figure	λ/10PV, 60-40 scratch-dig
Aperture Size	1cmx1cm or custom
Thickness	5mm
Angular Field of View	±2°
Temperature Range	-20℃ to 80℃
Vibration Tolerance	10g RMS
Housing Material	Black anodized aluminum

 

Applications

- Laser polarization control - Used to purify, rotate, or split polarization states of laser light. Critical for optimizing laser performance.

- Interferometry - Polarizing optics maximize interferometric contrast by ensuring precise polarization matching in the arms of the interferometer.

- Optical choppers - Can modulate or chop a beam using polarization rotation or switching.

- Quantum optics experiments - Polarization manipulation enables quantum control of photons in quantum information and computing.

- Fiber optic gyroscopes - Polarization processing allows rotation detection from phase shifts between polarization eigenmodes in a coiled fiber.

- Polarimetry - Measuring polarization states, birefringence, optical activity, and other effects.

- Stress/strain sensors - Stress-induced birefringence changes can be sensitively measured using polarized light.

- Optical isolators - Prevent back reflections into lasers while maintaining polarization fidelity.

- Polarization microscopy - Reveals structural details through birefringence and dichroism effects using polarized illumination.

 

What is the advantage of using a polarized beam splitter?

A polarized beam splitter offers critical benefits for experiments and instruments that rely on precision manipulation of polarization states of light. By leveraging the polarization dependence of refraction in birefringent crystals, polarizing beam splitters provide a robust, stable, and efficient way to separate and purify orthogonal polarizations that would otherwise remain mixed together in unpolarized or partially polarized beams.

 

The unmatched extinction ratios exceeding 1000:1 ensure almost no leakage or crosstalk between the selected and rejected polarizations. This enables unprecedented control and precision for encoding information into and retrieving it from specific polarization states. The transmitted beams maintain excellent beam quality, with precise optical paths and wavefronts overlapping for each polarization.

 

Unlike absorptive polarizers, the polarization separation is lossless in principle, with transmission efficiencies over 95% readily achievable for the chosen polarization. This preserves laser power and optical throughput while avoiding thermal effects that could distort the optics and beam paths.

 

With careful crystal orientation and optical coatings, polarizing beam splitters can be optimized for any wavelength from UV to mid-IR. They maintain outstanding performance over wide spectral bandwidths and field-of-view angles. The rugged, compact modules ensure stable alignment over the lifetime of the instrument.

 

For any application where success depends on your ability to cleanly split, modify, analyze, or utilize orthogonal polarizations of light, a precision polarizing beam splitter gives you an indispensable optical tool to take full advantage of the polarization domain. It's easier to imagine a visual table today with this polarization workhorse.

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