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THz High-Pass Filter
Product Introduction：
The THz High-Pass Filter (HPF) is designed to suppress lower frequencies and only allow high terahertz frequencies to pass through. The filter is made of a metal plate with sub-wavelength diameter holes. The filter is installed on a bracket and matches the ring. The micro-holes in the filter act as waveguides, and the suppression frequency is determined by the geometric shape of the holes.
Application：
• THz Spectroscopy;
• THz Diagnostic Instrument;
• Applications in astronomy and astrophysics, including applications in space base stations;
• Materials Research;
• Sensors and Detectors;
• Extracting high harmonics from the radiation of free electron terahertz lasers;
• Shielding Coating.
Key Characteristic：
• High transmittance in the passband;
• Low stopband transmission rate(＜0.1%);
• The cutoff frequency reaches up to 0.5 THz;
• Installed on the bracket。
TYDEX High-Frequency Filter product model: HPF-Tydex
The following table and curves illustrate the characteristics and spectral curves of several filters：
Product Model | Cut-Off Frequency，THz | Passband Maximum Transmission Rate, % | Transmittance at one octave above the cutoff frequency,% |
HPF0.34-12.7 | 0.34 | 不低于99 | 不低于44 |
HPF0.5-12.7 | 0.5 | 不低于88 | 不低于33 |
Size and Shape
The cutoff frequency of the filter is 0.1,0.2,0.3,0.4,0.5 THz,The aperture/diameter is 12.7/ 31,24 / 31,35 / 44,47 /60 mm.