Holographic IR Wire Grid Polarisers

14 Aug 2017

Using a holographic production method allows for the use of a wide range of infrared

materials which do not lend them self to the ruling production process. An

interferometrically generated interference pattern is produced from monochromatic

light and exposed onto the chosen substrate. Once developed, the resist has a

regular sinusoidal profile that is vacuum aluminised at an oblique angle to create the

array of parallel conductors. Available substrates include Calcium Fluoride (CaF2),

Barium Fluoride (BaF2), Zinc Selenide (ZnSe) and KRS-5, and have a spacing of 2700

grooves/mm for optimum short-wavelength efficiency.

Holographic wire grid polarisers are available as a standard 25mm diameter,

unmounted or in a double protective ring. These parts feature high transmission and

high extinction ratios.

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