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) |
|
The spectral curves of AR-coated ZnSe polarizer are below
![AR-coated ZnSe polarizers AR-coated ZnSe polarizers](/images/products/znse-k1.jpg)
![AR-coated ZnSe polarizer AR-coated ZnSe polarizer](/images/products/znse-k2.jpg)
![AR-coated ZnSe polarizer AR-coated ZnSe polarizer](/images/products/znse-dp.jpg)
Standard items can be ordered from our stock. The polarizers with non-standard sizes, shape and operational wavelength region are available on request.