|Download THz Polarizers Datasheet (PDF, 500 KB)|
We offer the following polarizer types operating in far IR and THz wavelength ranges:
1. Polyethylene Polarizers*
These are transmission gratings. Polarizer grating is formed by triangular notches with one aluminum-coated facet.
*temporarily out of production
Fig. 1. Effective transmittance (Max) and unwanted polarization transmittance (Min) of a polyethylene polarizer.
Fig. 2. Degree of polarization by a polyethylene polarizer.
2. Polypropylene Polarizers
These are also transmission gratings, but produced using holographic technology (sine-shaped profile with partial aluminum coating).
|Spectral range, μm||>=15||>=15|
|Standard aperture, mm||D25||D25|
|Standard frame dimensions, mm||D34.9x7.9||D40х8|
|Maximum aperture, mm||50||45|
|Notches/dashes per mm||1200||1200|
|Effective transmittance K1, %||85-100 (avg. 91)
70-90 (avg. 80)
|Unwanted polarization transmittance K2, %||<1 up to 8 μm
<0.3 @15-600 μm
<1 @600-1500 μm
0.2 @15 μm
|Degree of polarization P1=(K1-K2)/(K1+K2), %||
98 @8 μm
99.5 @15 μm
|Extinction coefficient E=K1/(2xK2)||
100-1500 @15-300 μm
100-10000 @15-500 μm
Advantages of grating polarizers over metal mesh-based polarizers:
For price quotation and delivery please fill in our Request Form.