- We offer polypropylene film-based polarizers for far IR and THz spectral ranges. The film is covered with sine-shaped grooves partially coated with aluminum. The result is that polarizer behaves as a transmission grating.
- Performance in a very wide spectral range from mid-IR to THz;
- High transmittance in far IR and THz regions;
High degree of polarization of transmitted radiation.
|
Substrate material |
Polypropylene |
|
Spectral range, μm |
>=15 |
|
Standard aperture, mm |
D25 |
|
Standard rim dimensions, mm |
D40х8 |
|
Maximum aperture, mm |
45 |
|
Grooves per mm |
1200 |
|
Effective transmittance K1, % |
80-95 (avg. 90)@ 15-1500 μm |
|
Unwanted polarization transmittance K2, % |
0.2@15 μm<0.3 @15-250 μm<0.02 @250-3000 μm |
|
Degree of polarization P1=(K1-K2)/(K1+K2), % |
99.5@15 μm<99.3 @15-250 μm |
|
Extinction coefficient E=K1/K2 |
<350 @15-250 μm |
THz Film Polarizers
THz Film Polarizers
