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Description

High-Power Polarizing Cube Beamsplitter for 532 nm – 25.4 mm Optically Contacted UVFS Cube

The PBSC-HP-25.4X25.4-25.4-532 is a high-power polarizing cube beamsplitter engineered for precision beam management at 532 nm, the second harmonic of Nd:YAG and other high-performance solid-state lasers. Fabricated from UV fused silica (UVFS) and assembled by optical contacting (without adhesives), this 25.4 mm × 25.4 mm × 25.4 mm cube offers outstanding thermal stability and laser damage resistance for demanding industrial, scientific, and OEM laser systems. With a clear aperture of 22 mm and a transmitted wavefront distortion of < λ/6 at 632.8 nm, it supports tight focusing, long propagation distances, and high-precision metrology where wavefront quality is critical.

Designed to transmit p-polarized light while reflecting s-polarized light, this polarizing cube beamsplitter provides an extinction ratio > 1000:1, making it an excellent choice for applications requiring high polarization purity and stable power splitting. The internal polarizing coating delivers Rs > 99.9% and Tp > 97% specifically at 532 nm, enabling efficient separation or combination of beams with minimal insertion loss. An anti-reflective coating with residual reflectance Ra < 0.3% further suppresses unwanted back-reflections and ghost beams, improving overall system contrast and stability in precision measurement and imaging setups.

This cube beamsplitter is optimized for high-power and high-peak-power operation, with an estimated laser-induced damage threshold (LIDT) > 10 J/cm² at 1064 nm, making it well suited for use in frequency-doubled Nd:YAG and related green laser platforms. Typical implementations include beam splitting and combining in regenerative and multipass amplifier stages, power scaling of 532 nm laser systems, polarization control in machining and micromachining tools, and routing of beams in pump–probe experiments. Its compact 1-inch form factor and < 3 arcmin beam deviation allow straightforward integration into standard optomechanical mounts and cage systems commonly used in research and industrial optical benches.

Thanks to its UVFS substrate and high-quality surface finish (40-20 scratch-dig over the clear aperture in accordance with MIL-PRF-13830B), the PBSC-HP-25.4X25.4-25.4-532 combines low scatter with excellent resistance to environmental and thermal stresses. This makes it a robust solution for long-term deployment in 24/7 production environments as well as high-precision laboratory setups. Whether used to clean up polarization, stabilize power in interferometric systems, or manage multiple green laser channels from sources such as ultrafast, Q-switched, or CW laser families at 532 nm, this high-power polarizing cube beamsplitter provides reliable, repeatable performance with a wide safety margin under elevated optical loads.

High Power Polarizing Cube Beamsplitter 25.4 mm 532 nm PBSC-HP-25.4X25.4-25.4-532

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Specifications

Material: UV Fused Silica (UVFS)
Size (Linear Dimension): 25.4 mm
Design Wavelength Range: Not Specified
Surface Quality S1/S2 (Scratch-Dig): 40-20
Transmitted Wavefront Distortion (TWD): <= Lambda/6
Max Beam Deviation: 3 arcmin
Extinction Ratio: >= 1000:1
Rs (Reflectance Of Polarizing Coating @ Design Wavelength): 99.9 %
Tp (Transmittance Of Polarizing Coating): 97 %
Ra (AR Coating): 0.3 %
Product: High-Power Polarizing Cube Beamsplitter
Model: PBSC-HP-25.4X25.4-25.4-532
Material: UVFS
Dimensions: 25.4 mm x 25.4 mm x 25.4 mm
Clear Aperture: ⌀22 mm
Surface Quality S1/S2: 40-20 S-D per CA (MIL-PRF-13830B)
Transmitted Wavefront Distortion: < λ/6 @ 632.8 nm
Beam Deviation: < 3 arcminutes
Extinction Ratio: > 1000:1
Polarizing Coating Performance: Rs > 99.9% + Tp > 97% @ 532 nm
Anti-Reflective Coating: Ra < 0.3%
LIDT (estimated): > 10 J/cm² @ 1064 nm
Design Wavelength: 532 nm
Type: Optically Contacted
Manufacturer Part Number (MPN): PBSC-HP-25.4X25.4-25.4-532
FindLight SKU: FL-24588

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Features

  • High‑power 532 nm design for Nd:YAG lasers – Optimized specifically for the 532 nm second harmonic of high‑performance Nd:YAG and ultrafast laser systems (Coherent HyperRapid NXT, Lumentum PicoBlade, TOPTICA FemtoFiber, EKSPLA Atlantic, Spectra‑Physics IceFyre, Bright Solutions Aero, neoLASE neoMOS, HÜBNER Cobolt Tor, Lumibird Centurion+ and similar sources).
  • Excellent polarization splitting performance – Polarizing cube beamsplitter transmits p‑polarized light and reflects s‑polarized light with a high extinction ratio of >1000:1, ensuring clean separation or combination of polarization states in precision setups.
  • High-efficiency dielectric coatings at 532 nm – Advanced thin‑film polarizing coating delivers Rs > 99.9% (s‑polarization reflectance) and Tp > 97% (p‑polarization transmittance) at 532 nm, minimizing power loss and enabling efficient beam routing in high‑value laser systems.
  • High laser damage threshold for demanding applications – Coating and substrate stack designed for high‑power operation with an estimated LIDT > 10 J/cm² @ 1064 nm (typical of robust high‑power dielectric designs), making it suitable for industrial, scientific, and OEM laser platforms with elevated fluence.
  • Optically contacted cube for maximum stability – Optically contacted construction (no epoxy in the beam path) provides excellent long‑term stability, low absorption, superior thermal handling, and high reliability under high average power and pulsed operation compared to cemented cubes.
  • UV fused silica (UVFS) substrate – Manufactured from UV‑grade fused silica, offering low bulk absorption, low fluorescence, high thermal stability, and excellent homogeneity – ideal for high‑power and short‑pulse laser beams at 532 nm and harmonically related wavelengths.
  • Large 1" cube format for flexible integration – Standard laboratory size of 25.4 mm × 25.4 mm × 25.4 mm with a generous Ø22 mm clear aperture provides compatibility with common opto‑mechanical mounts and allows handling of larger beam diameters without clipping.
  • Superior transmitted wavefront quality – Specified transmitted wavefront distortion of < λ/6 @ 632.8 nm over the clear aperture supports diffraction‑limited performance, making this cube suitable for precision imaging, metrology, and beam shaping applications.
  • Low beam deviation for accurate alignment – Tight beam deviation of < 3 arcminutes ensures precise beam routing in interferometers, multi‑pass cells, and other alignment‑sensitive systems, reducing the need for downstream steering optics.
  • High surface quality for low scatter – Surfaces S1/S2 specified to 40‑20 scratch‑dig (MIL‑PRF‑13830B) minimize scatter and ghosting, preserving beam quality and contrast in high‑precision and high‑dynamic‑range measurements.
  • Low-loss AR coating on entrance/exit faces – Anti‑reflective coating with Ra < 0.3% per surface reduces Fresnel reflections, improves throughput, and minimizes parasitic back‑reflections that can destabilize sensitive laser cavities or detection systems.
  • Engineered for beam splitting and combining – Ideal for both separating and combining polarized beams in MOPA chains, amplifier stages, pump‑probe experiments, laser machining heads, and polarization‑based power‑scaling architectures.
  • Compatible with CW, nanosecond, picosecond, and femtosecond lasers – High‑damage‑threshold dielectric coatings and UVFS substrate make the cube suitable for a wide range of temporal regimes, from CW and Q‑switched to ultrafast 532 nm sources.
  • Low absorption for reduced thermal lensing – All‑dielectric coatings and UV fused silica substrate minimize absorption‑driven heating, reducing thermal lensing, coating stress, and beam distortion under high average power conditions.
  • Ideal for industrial, medical, and research environments – Combines high reliability, tight specifications, and standard 1" cube form factor, making it a robust choice for OEM integration, industrial laser workstations, microscopy, spectroscopy, and laboratory optics setups.

Applications

  • High‑power green laser beam splitting and combining
    Designed for 532 nm (frequency‑doubled Nd:YAG), this cube beamsplitter is ideal for separating or combining high‑power green laser beams in industrial and scientific systems while maintaining polarization purity.
  • Polarization control in DPSS and solid‑state laser systems
    Used to transmit p‑polarized light and reflect s‑polarized light with an extinction ratio >1000:1, enabling precise polarization management in diode‑pumped solid‑state (DPSS) and other solid‑state lasers.
  • Power scaling and beam combination in MOPA / amplifier stages
    Suitable for combining or routing beams between master oscillator and power amplifier (MOPA) stages at 532 nm, supporting power scaling in pulsed and CW laser architectures.
  • Pulse picker and regenerative amplifier subsystems
    Utilized in ultrafast and nanosecond regenerative amplifiers for polarization‑based pulse selection, routing, and cavity dumping in high‑repetition‑rate systems.
  • High‑power laser machining and micromachining
    Supports beam splitting in precision micromachining setups (scribing, cutting, drilling, structuring) where 532 nm sources such as Coherent HyperRapid NXT, Spectra‑Physics IceFyre, and similar lasers are used.
  • Materials processing process monitoring channels
    Enables creation of reference and monitoring arms in high‑power machining workstations, diverting a controlled portion of the beam for in‑situ diagnostics without degrading the main process beam.
  • Laser engraving, marking, and scribing systems
    Used to split or combine beams in high‑throughput marking and engraving platforms employing 532 nm DPSS or fiber‑based frequency‑doubled sources.
  • Precision beam routing in beam delivery systems
    Provides low‑deviation (<3 arcmin) beam steering and routing in complex optical layouts where maintaining beam pointing and polarization is critical.
  • Interferometry and metrology at 532 nm
    Enables high‑contrast interferometric measurements that rely on well‑defined polarization states, such as phase‑shifting interferometry, surface profiling, and optical path stability studies.
  • Polarization‑sensitive imaging and microscopy
    Suitable for splitting beams in polarization‑resolved imaging systems, confocal and multiphoton microscopes, and structured illumination setups operating at or near 532 nm.
  • Holography and diffractive optics experiments
    Allows creation of reference and object beams with controlled polarization for digital and analog holography, as well as for testing diffractive optical elements at green wavelengths.
  • Quantum optics and photon correlation experiments
    Used to prepare and analyze polarization states in quantum optics experiments (e.g., entanglement, quantum key distribution testbeds) where high extinction ratio and low wavefront distortion (<λ/6) are required.
  • Optical trapping and tweezers at 532 nm
    Facilitates splitting and combining trapping beams and control beams in optical tweezer setups, where polarization control is important for trap stiffness and manipulation.
  • Raman spectroscopy and nonlinear optics
    Employed to manage pump and probe polarization in Raman, CARS, SRS, SHG, and other nonlinear optical experiments using 532 nm excitation.
  • Laser beam diagnostics and characterization
    Used to pick off a small portion of a high‑power beam for monitoring power, profile, M², and polarization state without significantly perturbing the main beam.
  • Stability‑critical scientific setups
    Optically contacted UVFS construction with low transmitted wavefront distortion makes it well‑suited for long‑term stable laboratory setups where adhesive aging and thermal drift must be minimized.
  • OEM integration in commercial laser systems
    Robust choice for OEM laser platforms based on Nd:YAG/DPSS or frequency‑doubled fiber lasers (e.g., Coherent HyperRapid, Lumentum PicoBlade, TOPTICA FemtoFiber, EKSPLA Atlantic, Bright Solutions Aero, neoLASE neoMOS, HÜBNER Cobolt Tor, Lumibird Centurion+), where consistent polarization splitting and high LIDT are essential.
  • Beam combining for multi‑source architectures
    Enables polarization‑based combining of multiple 532 nm sources into a single beam path for increased power or redundancy in critical systems.
  • Laboratory teaching and research optics benches
    A versatile component for university and R&D labs to demonstrate polarization effects, Malus’s law, and polarization‑based beam splitting/combining in advanced optics courses.

Export & Trade Information

ECCN: EAR99
HTS Code: 9001.90.9000
Estimated US Tariff: 10%

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Frequently Asked Questions

What is the PBSC‑HP‑25.4x25.4‑25.4‑532 high‑power polarizing cube beamsplitter and how does it work?
The PBSC‑HP‑25.4x25.4‑25.4‑532 is a high‑power polarizing cube beamsplitter designed for 532 nm laser applications. It is made from UV fused silica (UVFS) and consists of two right‑angle prisms that are optically contacted to form a 25.4 mm cube with a Ø22 mm clear aperture. A polarizing thin‑film coating at the internal interface reflects s‑polarized light (Rs > 99.9% at 532 nm) and transmits p‑polarized light (Tp > 97% at 532 nm), allowing it to separate or combine beams based on polarization. Anti‑reflection (AR) coatings on the input and output faces (Ra < 0.3%) minimize Fresnel losses. This makes it suitable for tasks such as polarization control in laser systems, splitting a laser into reference and measurement arms, or combining beams in amplifier stages.
Is this 532 nm polarizing cube beamsplitter suitable for high‑power and ultrafast Nd:YAG laser systems?
Yes. This cube is specifically engineered for high‑power operation at 532 nm, the second harmonic of Nd:YAG lasers. The manufacturer lists an estimated laser‑induced damage threshold (LIDT) > 10 J/cm² at 1064 nm; for 532 nm the absolute value will depend on pulse duration and spot size, but the design, materials (UV fused silica), and coatings are geared toward high‑power, industrial and scientific laser use. It is suitable for use with common picosecond and femtosecond 532 nm sources such as Coherent HyperRapid NXT, Lumentum PicoBlade, TOPTICA FemtoFiber, EKSPLA Atlantic, Spectra‑Physics IceFyre, Bright Solutions Aero, neoLASE neoMOS, and HÜBNER Photonics Cobolt Tor, provided the beam diameter and fluence at the cube are kept within the specified LIDT and the user follows best practices for high‑power handling (clean beam, proper mounting, and avoiding tight focusing on the coating).
What are the key optical specifications (extinction ratio, wavefront distortion, beam deviation) of this polarizing cube beamsplitter?
Key optical specifications for the PBSC‑HP‑25.4x25.4‑25.4‑532 include: - Extinction ratio: > 1000:1, meaning excellent separation between s‑ and p‑polarization states, suitable for precision polarization control. - Surface quality (S1/S2): 40‑20 scratch‑dig over the clear aperture, per MIL‑PRF‑13830B, comparable to high‑quality laser‑grade optics found on other professional platforms. - Transmitted wavefront distortion: < λ/6 at 632.8 nm over the clear aperture, supporting good beam quality in interferometric and imaging setups. - Beam deviation: < 3 arcminutes, ensuring that the transmitted and reflected beams remain well aligned with the nominal geometrical paths. Together, these specifications make the cube appropriate for demanding measurement setups, interferometry, and high‑precision laser machining where beam quality and polarization purity are important.
How should I mount and align the PBSC‑HP‑25.4x25.4‑25.4‑532 cube beamsplitter in my optical setup?
Mount the 25.4 mm (1 inch) cube in a kinematic or cage‑system cube mount designed for 1" beamsplitter cubes, securing it gently without excessive mechanical stress. The input beam should enter one of the AR‑coated faces at normal incidence (0°) to maintain the stated polarization performance and low beam deviation. Align the cube so that the coated internal interface is at 45° to the incoming beam: p‑polarized light will transmit straight through while s‑polarized light is reflected at 90°. Use a polarizer or half‑wave plate upstream to set the desired polarization state and optimize extinction ratio. For high‑power operation, avoid clipping the beam at the edges, keep the beam well within the Ø22 mm clear aperture, and ensure good thermal management of the mount to prevent misalignment. Cleaning should follow standard laser‑optic practices (dust‑free air, approved optical tissues, and solvents) to avoid damaging the coatings.
What is the difference between this high‑power polarizing cube beamsplitter and a non‑polarizing beamsplitter or thin‑film polarizer?
This product is a polarizing cube beamsplitter optimized for 532 nm, which means it separates light by polarization rather than by intensity ratio alone. Compared with other common components: - Non‑polarizing beamsplitter (e.g., PP‑UVFS‑25.4‑3.0‑NPBS10 at 1064 nm) is designed to split intensity approximately 50/50 independent of polarization, using a plate geometry and different coatings. It is used when you want equal power in two arms without strong polarization discrimination. - Thin‑film polarizer plate (e.g., PP‑UVFS‑25.4‑6.35‑TFP67 at 1030 nm) also separates s‑ and p‑polarization but typically operates at a specified angle of incidence (often 45°) and in a plate configuration. It can offer very high LIDT and is often used for ultrafast systems where dispersion and minimal beam walk‑off are critical. - Polarizing cube beamsplitter (this product) provides a compact, mechanically robust way to split or combine beams at 90° with minimal transmitted beam displacement. It is easier to integrate into cube mounts and cage systems and offers high extinction ratio with good wavefront quality at the design wavelength of 532 nm.
Can I use the PBSC‑HP‑25.4x25.4‑25.4‑532 cube at wavelengths other than 532 nm?
The cube is specifically designed and AR‑coated for 532 nm. At wavelengths significantly different from 532 nm, the polarizing coating’s performance (Rs and Tp) and the AR coatings’ reflectance will deviate from the stated values, typically resulting in reduced extinction ratio and higher losses. Limited off‑design use within a narrow spectral range around 532 nm (for example, typical green DPSS variations) is often acceptable in practice, but for other discrete wavelengths such as 515 nm or 1064 nm it is better to use the dedicated models (PBSC‑HP‑25.4x25.4‑25.4‑515 or PBSC‑HP‑25.4x25.4‑25.4‑1064) that are optimized and coated for those wavelengths. For broadband or tunable sources, consider broadband polarizing optics or specify a custom design via a request for quote.
What are the mechanical properties and material advantages of this 25.4 mm UV fused silica polarizing cube beamsplitter?
This beamsplitter is fabricated from UV fused silica (UVFS) in a 25.4 mm × 25.4 mm × 25.4 mm cube format with a Ø22 mm clear aperture. UVFS offers low thermal expansion, excellent homogeneity, and very low bulk absorption from the UV through the near‑IR, which supports high‑power handling and minimizes thermally induced wavefront distortions. The prisms are optically contacted rather than cemented, eliminating organic adhesives that typically limit damage thresholds in high‑power systems. This construction is comparable to other premium high‑power polarizing cubes on the market and is particularly advantageous in demanding industrial, medical, and scientific laser applications where long‑term stability and resistance to laser‑induced damage are critical.

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