Fast thermal relaxation in cavity-coupled graphene bolometers with a Johnson noise read-out
© 2018, The Author(s). High sensitivity, fast response time and strong light absorption are the most important metrics for infrared sensing and imaging. The trade-off between these characteristics remains the primary challenge in bolometry. Graphene with its unique combination of a record small elec...
| Main Authors: | , , , , , , , , , , , , |
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| Other Authors: | |
| Format: | Article |
| Language: | English |
| Published: |
Springer Nature
2021
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| Online Access: | https://hdl.handle.net/1721.1/134979 |
| _version_ | 1826194426039369728 |
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| author | Efetov, Dmitri K Shiue, Ren-Jye Gao, Yuanda Skinner, Brian Walsh, Evan D Choi, Hyeongrak Zheng, Jiabao Tan, Cheng Grosso, Gabriele Peng, Cheng Hone, James Fong, Kin Chung Englund, Dirk |
| author2 | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science |
| author_facet | Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Efetov, Dmitri K Shiue, Ren-Jye Gao, Yuanda Skinner, Brian Walsh, Evan D Choi, Hyeongrak Zheng, Jiabao Tan, Cheng Grosso, Gabriele Peng, Cheng Hone, James Fong, Kin Chung Englund, Dirk |
| author_sort | Efetov, Dmitri K |
| collection | MIT |
| description | © 2018, The Author(s). High sensitivity, fast response time and strong light absorption are the most important metrics for infrared sensing and imaging. The trade-off between these characteristics remains the primary challenge in bolometry. Graphene with its unique combination of a record small electronic heat capacity and a weak electron–phonon coupling has emerged as a sensitive bolometric medium that allows for high intrinsic bandwidths1–3. Moreover, the material’s light absorption can be enhanced to near unity by integration into photonic structures. Here, we introduce an integrated hot-electron bolometer based on Johnson noise readout of electrons in ultra-clean hexagonal-boron-nitride-encapsulated graphene, which is critically coupled to incident radiation through a photonic nanocavity with Q = 900. The device operates at telecom wavelengths and shows an enhanced bolometric response at charge neutrality. At 5 K, we obtain a noise equivalent power of about 10 pW Hz–1/2, a record fast thermal relaxation time, <35 ps, and an improved light absorption. However the device can operate even above 300 K with reduced sensitivity. We work out the performance mechanisms and limits of the graphene bolometer and give important insights towards the potential development of practical applications. |
| first_indexed | 2024-09-23T09:55:56Z |
| format | Article |
| id | mit-1721.1/134979 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T09:55:56Z |
| publishDate | 2021 |
| publisher | Springer Nature |
| record_format | dspace |
| spelling | mit-1721.1/1349792023-02-24T21:15:39Z Fast thermal relaxation in cavity-coupled graphene bolometers with a Johnson noise read-out Efetov, Dmitri K Shiue, Ren-Jye Gao, Yuanda Skinner, Brian Walsh, Evan D Choi, Hyeongrak Zheng, Jiabao Tan, Cheng Grosso, Gabriele Peng, Cheng Hone, James Fong, Kin Chung Englund, Dirk Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology. Department of Physics © 2018, The Author(s). High sensitivity, fast response time and strong light absorption are the most important metrics for infrared sensing and imaging. The trade-off between these characteristics remains the primary challenge in bolometry. Graphene with its unique combination of a record small electronic heat capacity and a weak electron–phonon coupling has emerged as a sensitive bolometric medium that allows for high intrinsic bandwidths1–3. Moreover, the material’s light absorption can be enhanced to near unity by integration into photonic structures. Here, we introduce an integrated hot-electron bolometer based on Johnson noise readout of electrons in ultra-clean hexagonal-boron-nitride-encapsulated graphene, which is critically coupled to incident radiation through a photonic nanocavity with Q = 900. The device operates at telecom wavelengths and shows an enhanced bolometric response at charge neutrality. At 5 K, we obtain a noise equivalent power of about 10 pW Hz–1/2, a record fast thermal relaxation time, <35 ps, and an improved light absorption. However the device can operate even above 300 K with reduced sensitivity. We work out the performance mechanisms and limits of the graphene bolometer and give important insights towards the potential development of practical applications. 2021-10-27T20:10:09Z 2021-10-27T20:10:09Z 2018 2019-06-14T14:15:15Z Article http://purl.org/eprint/type/JournalArticle https://hdl.handle.net/1721.1/134979 en 10.1038/S41565-018-0169-0 Nature Nanotechnology Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf Springer Nature arXiv |
| spellingShingle | Efetov, Dmitri K Shiue, Ren-Jye Gao, Yuanda Skinner, Brian Walsh, Evan D Choi, Hyeongrak Zheng, Jiabao Tan, Cheng Grosso, Gabriele Peng, Cheng Hone, James Fong, Kin Chung Englund, Dirk Fast thermal relaxation in cavity-coupled graphene bolometers with a Johnson noise read-out |
| title | Fast thermal relaxation in cavity-coupled graphene bolometers with a Johnson noise read-out |
| title_full | Fast thermal relaxation in cavity-coupled graphene bolometers with a Johnson noise read-out |
| title_fullStr | Fast thermal relaxation in cavity-coupled graphene bolometers with a Johnson noise read-out |
| title_full_unstemmed | Fast thermal relaxation in cavity-coupled graphene bolometers with a Johnson noise read-out |
| title_short | Fast thermal relaxation in cavity-coupled graphene bolometers with a Johnson noise read-out |
| title_sort | fast thermal relaxation in cavity coupled graphene bolometers with a johnson noise read out |
| url | https://hdl.handle.net/1721.1/134979 |
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