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Belosevich, V. V.; Gayduchenko, I. A.; Titova, N. A.; Zhukova, E. S.; Goltsman, G. N.; Fedorov, G. E.; Silaev, A. A. |
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Title |
Response of carbon nanotube film transistor to the THz radiation |
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Conference Article |
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Year |
2018 |
Publication |
EPJ Web Conf. |
Abbreviated Journal |
EPJ Web Conf. |
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195 |
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05012 (1 to 2) |
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Keywords |
field-effect transistor, FET, carbon nanotube, CNT |
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2100-014X |
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1317 |
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Matyushkin, Y.; Danilov, S.; Moskotin, M.; Belosevich, V.; Kaurova, N.; Rybin, M.; Obraztsova, E. D.; Fedorov, G.; Gorbenko, I.; Kachorovskii, V.; Ganichev, S. |
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Title |
Helicity-sensitive plasmonic terahertz interferometer |
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Journal Article |
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Year |
2020 |
Publication |
Nano Lett. |
Abbreviated Journal |
Nano Lett. |
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Volume |
20 |
Issue |
10 |
Pages |
7296-7303 |
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Keywords |
graphene, plasmonic interferometer, radiation helicity, terahertz radiation |
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Abstract |
Plasmonic interferometry is a rapidly growing area of research with a huge potential for applications in the terahertz frequency range. In this Letter, we explore a plasmonic interferometer based on graphene field effect transistor connected to specially designed antennas. As a key result, we observe helicity- and phase-sensitive conversion of circularly polarized radiation into dc photovoltage caused by the plasmon-interference mechanism: two plasma waves, excited at the source and drain part of the transistor, interfere inside the channel. The helicity-sensitive phase shift between these waves is achieved by using an asymmetric antenna configuration. The dc signal changes sign with inversion of the helicity. A suggested plasmonic interferometer is capable of measuring the phase difference between two arbitrary phase-shifted optical signals. The observed effect opens a wide avenue for phase-sensitive probing of plasma wave excitations in two-dimensional materials. |
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CENTERA Laboratories, Institute of High Pressure Physics, PAS, 01-142 Warsaw, Poland |
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1530-6984 |
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PMID:32903004 |
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1781 |
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