Edmund Optics® Introduces IR Holographic Wire Grid Polarizers
Edmund Optics® (EO), a provider of optical components and tools, introduces
new IR Holographic Wire Grid Polarizers. These Holographic wire grid polarizers
are manufactured using a unique holographic technique that creates sub-micron
wire grid spacing of 2,700 grooves/mm. When compared to conventional wire grid
methods, this holographic method creates a finer groove spacing, for excellent
short wavelength performance.
Substrates of BaF, ZnSe, KRS-5 and Ge
Edmund Optics’ IR Holographic Wire Grid Polarizers are available in substrates
made from Barium Fluoride (BaF), Zinc Selenide (ZnSe), Thalium Bromoiodiode
(KRS-5) and Geranium (Ge). Please note that special care must be taken when
handling KRS-5, as it is a toxic material. Rubber or plastic gloves must be
worn to avoid the risk of contamination.
High extinction ratios of greater than 40,000:1
These polarizers are designed to polarize light from unpolarized infrared laser
sources and are also ideal for attenuating light from polarized sources. When
two wire grid polarizers are used together, high extinction ratios of greater
than 40,000:1 can be achieved. The polarizers feature high transmission out
to a wavelength of 30 ?m. To create a polarizer/attenuator system where 360-degree
rotation is required, these polarizers can be mounted in the Edmund Optics 25.4
mm diameter or 50 mm diameter Metric Polarizer Mounts. For ease of use, the
polarization axis of each polarizer is clearly marked by two white lines etched
into the surface of its protective ring.
25 mm and 50 mm diameter sizes are available
IR Holographic Wire Grid Polarizers are available in a 25 mm diameter with a clear aperture of 18 mm and a ring thickness of 5 mm or in a 50 mm diameter with a clear aperture of 34 mm and a ring thickness of 6 mm. They are in-stock and available for immediate delivery.