期刊
JOURNAL OF INFRARED MILLIMETER AND TERAHERTZ WAVES
卷 33, 期 3, 页码 327-332出版社
SPRINGER
DOI: 10.1007/s10762-012-9877-y
关键词
Liquid crystals; Switchable terahertz devices; Birefringence
资金
- Studienstiftung des deutschen Volkes
- Braunschweig international graduate school of metrology
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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