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Wire Grid Polarisers

02 Aug 2017

Wire grid polarisers can be used in order to polarise unpolarised molecular laser

radiation, or to attenuate the emission of a polarised laser. LASER COMPONENTS

offers ruled wire grid polarisers on CaF2 and ZnSe substrates, and holographic

wire grid polarisers on CaF2, ZnSe, BaF2, KRS-5 and Ge substrates. This range of

available substrate materials collectively covers a wavelength region from 2.5 to 30

microns, providing parts suitable for most common applications.

 

Ruled wire grid polarisers are produced by directly ruling precisely spaced grooves

into the substrate material. The resulting well defined peaks are then deposited with

aluminium, forming an array of parallel ‘wires’. Ruled wire grid polarisers are suitable

for use in higher power laser applications.

 

The holographic counterpart is produced by projecting coherent laser beams onto a

photo-resist coated substrate to produce a precise pattern of equally spaced grooves.

Once processed, the resist has a sinusoidal surface relief profile which is then

aluminium coated at an oblique angle to create an array of parallel conductors. This

production technique allows for use of a number of substrate materials that would not

be possible with a ruling technique.

 

ZnSe and Ge wire grid polarisers are anti-reflection coated in order to maximise

transmission efficiencies.

More Information http://www.lasercomponents.com/uk/product/wire-grid-polarizers/

CONTACT DETAILS
Laser Components (UK) Ltd
Goldlay House
114 Parkway
Chelmsford
Essex
CM2 7PR
United Kingdom
Tel: +44 1245 491 499
Fax: +44 1245 491 801
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