THz and Sub THz Band Pass Filters

Quasi-optical band-pass filters are intended for selecting specified frequencies in the range of mm- and submm-waves.
The filters can be used in a variety of applications including laboratory and space research. They feature a specially designed multilayer frequency selective microstructure, which resonantly transmits the radiation within a specified frequency band and reflects the out-of-band radiation.

We offer a wide choice of high-performance band-pass filters with central frequencies up to several THz.
The filters exhibit high peak transmission and low out-of-band spectral leakage. To maximize the out-of-band blocking, two filters in series can be easily employed without significant losses in a peak transmittance.
Additionally, the filters can be designed according to the customer’s specification.

Our filter technology is versatile and can be optimized for a wide range of experimental demands including operation in cryogenic environment.

Key features:

• Central frequency of transmission maximum vmax: 0.07 ÷ 3 THz
• Relative bandwidth: delta v/vmax: 15 ÷ 20%
• Peak transmission: 84 ÷ 97%
• Out-of-band blocking: 23 ÷ 40dB
• Polarization insensitivity
• Compatibility with operation in vacuum