THz Low Pass Filters
THz Low Pass Filters are meant to transmit THz radiation and block short wavelengths. The filter is a set of materials mounted in a holder with a fit ring. Operation principle of the filters is based on the redistribution of the radiation by means of dispersion, reflection, scattering, diffusion, diffraction, and interference.
Applications:
THz spectroscopy;
Imaging;
THz testing devices;
Astronomy, space based astronomy, and astrophysics;
Materials research;
Sensors and detectors;
Electro-optic research.
Features:
Performance in wavelength range from IR to MM;
High transmittance in pass band;
Low transmittance (<0.1%) in stop band;
Mounted in holders.
Parts Numbers Designation, Characteristics and Spectral Curves
Part Number Designation for Tydex Low Pass Filter: LPF <frequency, THz> - <aperture, mm>
Part Number Designation
Cutting wavelength, λc, µm
Max transmittance of pass band, %
Damage threshold, W/cm2,CW
LPF23.4-24
13
92
7
LPF23.4-35
LPF23.4-47
LPF23.3-24
13
94
7
LPF23.3-35
LPF23.3-47
LPF23.1-24
13
91
7
LPF23.1-35
LPF23.1-47
LPF14.3-25
21
95
7
LPF14.3-35
LPF14.3-47
LPF10.9-24
27.5
73
8
LPF10.9-35
LPF10.9-47
LPF8.8-24
34
80
8
LPF8.8-35
LPF8.8-47
LPF5.5-24
55
83
8
LPF5.5-35
LPF5.5-47
LPF4.3-24
70
82
8
LPF4.3-35
LPF4.3-47
LPF4.0-24
75
82
8
LPF4.0-35
LPF4.0-47
LPF3.2-24
94
81
8
LPF3.2-35
LPF3.2-47
Sizes and Shapes
Round filters with clear aperture/outer diameter 24/31, 35/44, and 47/60 mm are available from stock.
Alternate sizes and custom designs are available upon request.