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STANDA in Lithuania
STANDA  P.Box.2684, LT-03001 Vilnius 9 P.O., Lithuania
Phone +370 5 2651474, Fax +370 5 2651483
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Home > Polarizing Optics > 14PIR - Broadband mid-IR polarizers
Broadband mid-IR polarizers
 
Extremely broadband
 
Wide acceptance angle
 
Polyethylene polarizers for 20-1000 microns are also available!
 
Long life time

A fine array of parallel conducting wires whose period is smaller compared to the wavelength of incident radiation will transmit one polarisation and reflect the other. The component of the radiation whose electric vector is perpendicular to the direction of the wires and induces current in the wires will be transmitted and the parallel vector reflected. Mid-IR polarizers are produced by holographic method (i.e. laser interferometry) or mechanically ruled. These polarisers do not suffer from beam displacement, are not affected by diverging or converging beam, have wide acceptance angle without degradation of performance and portable.


Tmax graph

Tmin graph

Standard Specifications
Dimension tolerance:+/- 0.5 mm
Wire grid spacing:2700 grooves/mm (nominal) for holographic type polarizers
1200 grooves/mm (nominal) for mechanically ruled polarizers
Surface flatness:<λ/20 @ 10.6 µm (up to 25 mm CA)
<λ/10 @ 10.6 µm (up to >25 mm CA)*
Parallelism error:<3 arcmin
Coating:Not coated
Laser induced damage threshold:>100 W/cm2 CW or > 2 J/cm2 100 ns pulsed for mechanically ruled polarizers
*Except KRS-5 material


MaterialTypeClear aperture, mm Mount diameter, mmExtinction ratioProduct ID
KRS-5Holographic1825150:1 @ 3 µm; 300:1 @ 15 µm14PIR-H-18-25-1
KRS-5Holographic2535150:1 @ 3 µm; 300:1 @ 15 µm14PIR-H-25-35-1
CaF2Holographic1825150:1 @ 3 µm; 300:1 @ 8 µm14PIR-H-18-25-2
CaF2Holographic2535150:1 @ 3 µm; 300:1 @ 8 µm14PIR-H-25-35-2
BaF2Holographic1825150:1 @ 3 µm; 300:1 @ 10 µm14PIR-H-18-25-3
BaF2Holographic2535150:1 @ 3 µm; 300:1 @ 10 µm14PIR-H-25-35-3
ZnSeHolographic1825150:1 @ 3 µm; 300:1 @ 10 µm14PIR-H-18-25-4
ZnSeHolographic2535150:1 @ 3 µm; 300:1 @ 10 µm14PIR-H-25-35-4
CaF2Ruled182550:1 @ 3 µm; 80:1 @ 5 µm14PIR-R-18-25-2
CaF2Ruled345050:1 @ 3 µm; 80:1 @ 5 µm14PIR-R-34-50-2
ZnSeRuled182550:1 @ 3 µm; 75:1 @ 5 µm; 100 @ 10.6 µm14PIR-R-18-25-4
ZnSeRuled345050:1 @ 3 µm; 75:1 @ 5 µm; 100 @ 10.6 µm14PIR-R-34-50-4

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