Thin Film Plate (TFP) Polarizers for 45° or Custom Angle Applications
45° TFP polarizer separates polarization into its orthogonal components (s&p). Wide range of shapes, sizes, extincion rations, LIDT and surface parameters are available.
Estimated Shipping Date: December 3, 2024 - December 17, 2024
* - 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.
- Description
- Applications
- Characteristics
TFP polarizers: Main function, production and alternatives
What is a 45-degree TFP polarizer?
Thin Film Plate (TFP) polarizer is a glass plate coated with polarizing beamsplitter coating. It separates incoming unpolarized light into its components. p-pol. is transmitted along the same direction as incoming beam, but s-pol is reflected perpendicular to incoming beam (90 deg).
How 45-degree TFP polarizers are made?
45-degree thin film plate polarizers' production procedure follows same steps as any other dielectric coated optical component. Substrates are prepared, polished, and inspected. Polarizing coating is designed with desired extinction ratio, wavelength and optimized for 45-degree incidence angle. Backside anti-reflective coating is optionally applied as well. After the coating TFP polarizers are inspected and stocked or shipped to customers.
45-deg TFP polarizer alternatives
Alien Photonics 45-degree TFP polarizers usually can easily be replaced by either standard PBS cubes, High Energy PBS cubes or broadband PBS cubes. If you don’t mind some fine-tunning Brewsters TFP polarizers can be a good alternative too, especially if you are also looking for even higher contrast.
TFP polarizers for optical switches, modulators, lasers and other applications
TFP polarizers for Polarization-dependent optical switches
45-degree TFP polarizers route signals based on their polarization state, ensuring efficient switching in optical systems.
TFP polarizers for optical modulators
In laser systems, optical modulators leverage 45-degree polarizers for dynamic laser beam intensity and polarization control. This is crucial in applications with variable laser outputs (e.g. adaptive optics).
High contrast 45-degree TFP polarizers for ultrafast (fs) lasers
Alien Photonics 45-deg TFP polarizers help to manipulate the polarization of pulses, which is essential for such applications as material processing that require precise laser control.
Characteristics and specifications of thin film plate (TFP) polarizers
Alien Photonics TFP polarizers can be highly customized in every characteristic starting from substrate material, surface quality and flatness to extinction ratio, clear aperture and LIDT... You can find some inspiration for your TFP in the table bellow featuring most popular requests from our partners:
| Characteristics | Typical Value |
|---|---|
| Substrate Characteristics | Value |
| Substrate material | UVFS, ZnSe, CaF₂, N-BK7, ... |
| Diameter tolerance | +0.0 / -0.15 mm |
| Thickness tolerance | ±0.1 mm |
| Protective chamfers (bevels) | <0.25 mm x 45° |
| Flatness | λ/10 @ 632.8 nm (per C.A.) |
| Surface quality | 10-5 S-D (acc. to MIL-PRF-13830B) |
| Coating Characteristics | Value |
| Clear Aperture (C.A.) | >85%; >100% |
| Extinction Ratio (Tp/Ts) | >1000:1; >500:1 ; >200:1 |
| Laser Induced Damage Threshold (LIDT) | >10 J/cm² @ 1064 nm, 10 ns, 10 Hz |
| Certificate | Availability |
| Certificate of Conformance (COC) | Yes. Available upon request. |
| RoHS | Yes. Available upon request. |
| Conflict minerals | Yes. Available upon request. |