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Laser Components (UK) Ltd.
Goldlay House,
114 Parkway,
Chelmsford Essex CM2 7PR
United Kingdom
Phone: +44 1245 491 499
E-Mail:info@lasercomponents.co.uk

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High Power Polarisers

Polarisers are used to separate s-pol and p-pol light. We offer a large variety of designs.

Plate polarisers and cube polarisers made of different materials suited for high power applications are available.

Thin Film Polarisers

Polarizer
Working principle of a polarizer
Broadband plate polarizers - insertion

Thin film Polarisers and broadband polarisers to separate polarisation.

Thin film polarisers are used for polarisation separation. They are particularly well suited for high laser powers and UV wavelengths.

Broadband plate polarisers with low dispersions are mainly used in systems that cover a wide wavelength range - for example, in Ti:sapphire fs lasers.

Thin-film polarisers are used to separate the polarisation states of light waves. These optics are well suited for high laser powers and UV wavelengths.

Our polarisers are manufactured using the IAD or IBS coating process. Both methods allow thin layers, which is very useful for generating complex designs. For example, they enable high-power thin-film polarisers to be used over the entire angular range from 53° to 59°. To ensure a high quality standard, our coating processes are controlled by broadband monitoring.

Working PrincipleThin-film polarisers are installed at the Brewster angle of ≈ 56°. An antireflection coating on the back is not necessary; thus the polariser can only be used in one direction of the optical axis. A good extinction rate is achieved due to the TFP coating on the front side.

When using and installing the thin-film polarisers it should be taken into account that the p-polarized beam experiences a slight beam offset and the s-polarized beam is deflected by ≈ 112°.

These polarisers are manufactured using an IAD process. In addition, the coating process for these polarisers is supervised using a broadband monitoring technique. The result is a high power thin-film polariser that can be used at any angle from 53° to 59°. Available wavelengths range from 450 nm to 1064 nm.

One major advancement is the improved specifications for significantly higher transmission and reflection values. More information can be found in our datasheet.

The coating of broadband plate polarisers is optimised for low dispersion, which makes them particularly suitable for polarisation separation of broadband systems such as Ti:sapphire fs-lasers. They are coated on both sides and can therefore be used in both directions.

Working Principle

Plate polarisers are typically manufactured with identical coatings on both sides and installed at an angle of ≈ 72° to the incident beam.  

Please note during development and installation that the p-polarized beam will experience a beam offset and the s-polarized beam will be deflected by ≈ 144°.

Polarisers for angles of incidence (AOI) of 45° can be easily integrated into optical setups. These special optics are typically manufactured with an AR coating on the rear side, since their AOI does not correspond to the Brewster angle.

LASER COMPONENTS also manufactures thin-film polarisers for two or three wavelengths.

Upon request, we also check the possibilities of integrating other optical functions into your thin-film polarisers - for example, additional HR or HT areas or a beam splitter function. Just fill out the online request or contact us by e-mail or phone.

Using a coating design from LASER COMPONENTS, the trichroic thin film polariser is able to separate the polarisations of three wavelengths at the same time. At an angle of incidence of 45°, the optic provides very high reflectivity for the s-polarisation of the selected wavelengths, while the p-polarisation is almost completely transmitted.

The polariser has been designed for blue (450 nm), green (520 nm) and red light (640 nm), but we can also create designs for other wavelengths upon request.

These types of polarisers can be used to combine linearly polarized laser beams from multiple sources or mix the three wavelengths. It is also possible to combine lasers with the same wavelength and different polarisation. The other way around, it is also possible to simultaneously separate unpolarized light at three wavelengths its two polarisations.

Your contact person

Samuel Thienel

+44 1245 491499