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Moskotin, M. V.; Gayduchenko, I. A.; Goltsman, G. N.; Titova, N.; Voronov, B. M.; Fedorov, G. F.; Pyatkov, F.; Hennrich, F. |
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Title |
Bolometric effect for detection of sub-THz radiation with devices based on carbon nanotubes |
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Conference Article |
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Year  |
2018 |
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J. Phys.: Conf. Ser. |
Abbreviated Journal |
J. Phys.: Conf. Ser. |
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1124 |
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051050 (1 to 5) |
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Keywords |
field-effect transistor, FET, carbon nanotube, CNT |
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Abstract |
In this work we investigate the response on THz radiation of a FET device based on an individual carbon nanotube conductance channel. It was already shown, that the response of such devices can be either of diode rectification origin or of thermoelectric effect origin or of their combination. In this work we demonstrate that at 77K and 8K temperatures strong bolometric effect also makes a significant contribution to the response. |
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1742-6588 |
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1301 |
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Gayduchenko, I.; Fedorov, G.; Titova, N.; Moskotin, M.; Obraztsova, E.; Rybin, M.; Goltsman, G. |
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Title |
Towards to the development of THz detectors based on carbon nanostructures |
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Conference Article |
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Year |
2018 |
Publication |
J. Phys.: Conf. Ser. |
Abbreviated Journal |
J. Phys.: Conf. Ser. |
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Volume |
1092 |
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012039 (1 to 4) |
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Keywords |
CVD graphene, carbon nanotubes, CNT, field effect transistors, FET, THz detectors |
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Abstract |
Demand for efficient terahertz radiation detectors resulted in intensive study of the carbon nanostructures as possible solution for that problem. In this work we investigate the response to sub-terahertz radiation of detectors with sensor elements based on CVD graphene as well as its derivatives – carbon nanotubes (CNTs). The devices are made in configuration of field effect transistors (FET) with asymmetric source and drain (vanadium and gold) contacts and operate as lateral Schottky diodes. We show that at 300K semiconducting CNTs show better performance up to 300GHz with responsivity up to 100V/W, while quasi-metallic CNTs are shown to operate up to 2.5THz. At 300 K graphene detector exhibit the room-temperature responsivity from R = 15 V/W at f = 129 GHz to R = 3 V/W at f = 450 GHz. We find that at low temperatures (77K) the graphene lateral Schottky diodes responsivity rises with the increasing frequency of the incident sub-THz radiation. We interpret this result as a manifestation of a plasmonic effect in the devices with the relatively long plasmonic wavelengths. The obtained data allows for determination of the most promising directions of development of the technology of nanocarbon structures for the detection of THz radiation. |
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1742-6588 |
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1302 |
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Komrakova, S.; Javadzade, J.; Vorobyov, V.; Bolshedvorskii, S.; Soshenko, V.; Akimov, A.; Kovalyuk, V.; Korneev, A.; Goltsman, G. |
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Title |
CMOS compatible nanoantenna-nanodiamond integration |
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Conference Article |
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Year |
2019 |
Publication |
J. Phys.: Conf. Ser. |
Abbreviated Journal |
J. Phys.: Conf. Ser. |
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Volume |
1410 |
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012180 |
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Keywords |
bull-eye antenna, hyperbolic metamaterials, NV-centers |
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Here we demonstrate CMOS compatible method to deterministically produce nanoantenna with nanodiamonds systems on example of bull-eye antenna on top of on hyperbolic metamaterials. We study the statistics of the placement of nanodiamonds and measure the fluorescence lifetime and the second-order correlation function of NV-centers inside nanodiamonds. |
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1182 |
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Zubkova, E.; Golikov, A.; An, P.; Kovalyuk, V.; Korneev, A.; Ferrari, S.; Pernice, W.; Goltsman, G. |
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Title |
CWDM demultiplexer using anti-reflection, contra-directional couplers based on silicon nitride rib waveguide |
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Conference Article |
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2019 |
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J. Phys.: Conf. Ser. |
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J. Phys.: Conf. Ser. |
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1410 |
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012179 |
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coarse wavelength-division multiplexing, Si3N4 rib waveguide |
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We report on the development and fabrication of a 9-channel coarse wavelength-division multiplexing for telecommunication wavelengths (1550 nm) using anti-reflection contra-directional couplers, based on silicon nitride (Si3N4) rib waveguide. The transmitted and reflected spectrum in each channel of the demultiplexer were measured. The average full width at half maximum of the transmitted (reflected) spectra is about 3 nm. |
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1183 |
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Kuzin, A.; Kovalyuk, V.; Golikov, A.; Prokhodtsov, A.; Marakhin, A.; Ferrari, S.; Pernice, W.; Gippius, N.; Goltsman, G. |
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Efficiency of focusing grating couplers versus taper length and angle |
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Conference Article |
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Year |
2019 |
Publication |
J. Phys.: Conf. Ser. |
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J. Phys.: Conf. Ser. |
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Volume |
1410 |
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Pages |
012181 |
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Keywords |
focusing grating coupler |
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Here we experimentally studied dependence of a focusing grating coupler efficiency versus taper length and angle on silicon nitride platform. As a result, we obtained a dependence for the efficiency of a focusing grating coupler on the parameters of the taper length and angle. |
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1742-6588 |
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1184 |
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