| 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) |
|
Fig.1,2,3 AR-coated holographic ZnSe polarizers.
Fig.4,5,6 AR-coated ruled ZnSe polarizers.
Fig.7,8,9 Uncoated holographic ZnSe polarizers.
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.
