THz isolator consists of two specific oriented THz polarizers and a magneto-optical medium that rotates the polarization plane by 45° over a wide frequency range. The device operates the following: THz radiation passes through the first input polarizer and becomes linearly polarized. Then the radiation passes through the magnetized barium-aluminum hexaferrite, and due to the Faraday effect the angle of the polarization plane is rotated by 45°. Further the radiation passes through the output polarizer oriented at 45° relative to the input one so that the direction of polarization at the exit from the hexaferrite coincides with the direction of the axis of the output polarizer.
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wavelength range, THz |
0.2-0.65 |
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Forward transmissivity, % |
not below 20 |
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Backward transmissivity, % |
no more than 10 |
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Isolation, dB |
not below 20 |
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Aperture, mm |
25 (standard) or custom |
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Dimensions: |
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Diameter, mm |
60 |
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Length, mm |
35 |
THz Isolator
