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Electrically Tunable Terahertz Notch Filters

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Abstract

In this letter we present a switchable THz notch filter. The filter contains a liquid crystal layer that acts as a half wave retarder in one state and as an isotropic layer in the other state. The device combines three unique properties: it can be switched electrically, it provides a filter depth of 35 dB at 350 GHz and it can be tuned over wide frequency range from 350 GHz to 700 GHz.

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Acknowledgement

Nico Vieweg thanks the Studienstiftung des deutschen Volkes and the Braunschweig international graduate school of metrology for funding.

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Authors and Affiliations

  1. Faculty of Physics, Philipps University of Marburg, Hans-Meerwein-Straße, MZG C06, Marburg, Germany

    N. Vieweg, N. Born, I. Al-Naib & M. Koch

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  1. N. Vieweg
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  2. N. Born
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  3. I. Al-Naib
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  4. M. Koch
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Correspondence to N. Vieweg.

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Vieweg, N., Born, N., Al-Naib, I. et al. Electrically Tunable Terahertz Notch Filters. J Infrared Milli Terahz Waves 33, 327–332 (2012). https://doi.org/10.1007/s10762-012-9877-y

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  • DOI: https://doi.org/10.1007/s10762-012-9877-y

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