Broadband Polarizing Beamsplitter (PBS) Cubes
Broadband Polarizing Beamsplitter (PBS) Cubes splits polarized light into its components. UV to VIS to IR . Extinction ratio Tp:Ts >250:1; LIDT >3 J/cm².
Estimated Shipping Date: January 5, 2026 - January 19, 2026
* - Shopping cart pricing is based on the most recent pricing and it is NOT ORDERING, but requesting an official quotation which should typically reach You within 1-2 business days.
- Variants
- Description
- Applications
- Characteristics
- FAQ
Broadband Polarizing Beamsplitter (PBS) Cube: key functions and production
What is Broadband Polarizing Beamsplitter (PBS) Cube?
BBPBS cubes split linearly polarized or unpolarized light into its components (S-pol. is reflected perpendicularly and P-pol is transmitted with the same direction as incoming beam). These beamsplitters main difference and advantage over standard PBS cubes and high energy PBS cubes is the broad range of wavelengths.
How broadband PBS cubes are manufactured?
Broadband polarizing beam splitter (PBS) cubes are produced in very similar way to Non-polarizing beamsplitter cubes and is almost the same as standard PBS or High Energy PBS cubes, including polishing and inspecting the prisms. The main difference is in the coating. On one of the right-angle prisms broadband polarizing coating is deposited allowing wide range of wavelengths to be polarized when passing through. Also, enter-exit (input-output) surfaces are coated with broad band anti-reflective (AR) coating further improving efficiency. After that prisms are cemented or optically bonded forming high performance broad band polarizing beamsplitter cube.
Broadband Polarizing Beamsplitter (PBS) Cubes - Applications
Tunable lasers - split and combine multiple wavelengths
Broadband PBS cubes can split or combine a range different wavelengths based on polarization. This feature enables precise wavelength and polarization selection in tunable and multi-wavelength laser systems.
Spectroscopy - analyze broadband light
Alien Photonics broadband {BS cubes are used in spectroscopy instruments to analyze light from a wide range of wavelengths. These cubes enable comprehensive chemical and material analysis with polarized spectra.
Research and development (R&D) - polarization sensitive experiments
BBPBS cubes allows scientists in laboratories to conduct various experiments involving polarization over wide spectral range, quantum optics, non-linear optic and other researches.
Imaging devices - enhance contrast in remote sensing
In multispectral imaging devices, broadband PBS cubes split polarized light into components across different spectral bands. This effect enhances image contrast and detail, which is especially important in remote sensing, detailed analysis and monitoring applications.
Alternatives to broadband PBS cubes
Very narrow band or single wavelength - single band PBS
When comparing to Standard and High Energy PBS cubes, Alien Photonics broadband cubes can cover broad wavelength rage. However, typically broadband cubes have lower Laser Induced Damage Threshold (LIDT) characteristic. Anyways, this parameter can be improved by:
- choosing the right coating.
- optically bonding right-angle prisms instead of using cement (glue). We suggest checking our article, where we compare - glue or optical contact cubes - for more informed decisions.
For small systems and Low GDD - thin film polarizer plate
Broadband PBS cubes can be interchanged with broadband 45-degree TFP polarizer and with some adjustments with broadband Brewster TFP. Check our guide "comparing polarizers: PBS or TFP" for more information.
Alternatives to broadband PBS cubes for beam combining
To replace broadband PBS cube with dichroic mirror usually whole set up must be changed, so it is better to decide before building the system. Alien Photonics guide broadband PBS or Dichroic Mirror covers pros and cons of both beam combiners.
Broadband PBS cube - Technical specifications, Characteristics, Product Details
If you can't find product parameter in typical items table, that parameter is probably here. All parameters can be customized. Just let us know!
Substrate specifications - polishing quality, flatness, others
| Parameter | Standard components | Custom Components |
|---|---|---|
| Substrate material | UVFS or N-SF1 | Various materials |
| Angle of Incidence (AOI) | 0° | 0° |
| Flatness | λ/8~ λ/6 @ 632.8 nm | <λ/10 @ 632.8 nm |
| Surface quality | 20-10 S-D or 40-20 S-D | 10-5 S-D (acc. to MIL-PRF-13830B) |
| Beam deviation | <3 arcmin | Custom |
| Dimension tolerances | ±0.1 mm | Custom |
| Chamfers (bevels) | 0.10-0.25 mm x 45° | Custom |
Coating characteristics - Extinction Ratio, Reflection, LIDT, others
| Coating Characteristics | Standard Coating | Custom Coating |
|---|---|---|
| Clear Aperture | >85% | Custom aperture |
| Extinction Ratio (Tp/Ts) | >250:1 | Custom values available, depends on wavelength range |
| Laser Induced Damage Threshold (LIDT) | >0.3-3 J/cm² @ 1064 nm, 10 ns, 10 Hz | According to your laser parameters |
| Polarization | Rs>99.5% Tp>97% (Tp>96% for UV) | Custom values available |
| AR Coating durability | acc. to MIL-C-675C | Acc. to custom requirements |
Quality certificates: COC, RoHS, Conflict Minerals, others
| Certificates | Availability |
|---|---|
| Certificate of Conformance (COC) | Yes. Available upon request. |
| RoHS | Yes. Available upon request. |
| Conflict minerals | Yes. Available upon request. |
| Other certificates | If Available |
Still having trouble finding your parameter ? Feel free to contact us by sending an email or filling a form. Alien Photonics official quotations (formal offers) include the values of requested parameters and more.
Frequently Asked Questions - Price, Specifications & Delivery Time
What is the price of broadband PBS cube?
Typical Broadband PBS price is about 170 € when producing optimal batch. Smaller and glued cubes can cost less. It also depends on quantity and fixing technology.
What is the minimal order quantity (MOQ)?
Alien Photonics does not have minimal order quantity for broadband PBS cubes.
How fast can you deliver broadband PBS cube?
If in stock - next day. Production could take 2-8 weeks. Very custom options might take 12 weeks.
What is LIDT of Broadband PBS?
- Glued option >0.3 J/cm² @ 1064 nm, 10 ns, 10 Hz.
- Optical contact option >3 J/cm² @ 1064 nm, 10 ns, 10 Hz.
Are these cubes glued or optically contacted?
Alien Photonics broadband cubes can be glued and contacted.
Can you offer premium quality broadband PBS cubes?
Yes, we can offer 10-5 scratch-dig and <λ/10 @ 632.8 nm custom cubes.