ZnSe Polarizer

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Substrate material ZnSe
Spectral range, mm 1.5-14
Typical operation aperture, mm 25 x 25
Standard holder size at typical aperture, mm D42 x 8
Maximal operation aperture, mm 50 x 50/D 50
Grooves per mm 1200
Transmission efficiency K1(average), % 65 -70
(back side AR coated)
>50 (uncoated)
Transmission of unwanted radiation K2, % 1-2 @ 2 mm
<0.1 @ 10 mm
Degree of polarization (K1-K2)/(K1+K2), % 94 - 97 @ 2 mm
(AR coated)
92 - 96 @ 2 mm (uncoated)
>99 @ 10 mm
Extinction ratio E=K1/(2*K2) 15-35 @ 2 mm
325 - 350 @ 10 mm
(AR coated)
10 -25 @ 2 mm
250 @ 10 mm (uncoated)

 

Transmission efficiency K1
Transmission of unwanted radiation K2
Degree of polarisation P

Fig.1,2,3 AR-coated holographic ZnSe polarizers.

Transmission efficiency K1
Transmission of unwanted radiation K2
Degree of polarisation P
Fig.4,5,6 AR-coated ruled ZnSe polarizers.

Transmission efficiency K1
Transmission of unwanted radiation K2
Degree of polarisation P


Fig.7,8,9 Uncoated holographic ZnSe polarizers.

Transmission efficiency K1
Transmission of unwanted radiation K2
Degree of polarisation P

Fig.10,11,12 Uncoated ruled ZnSe polarizers.

 

Standard items can be ordered from our stock. The polarizers with non-standard sizes, shape and operational wavelength region are available on request.