Journal article
Direct and integrating sampling in terahertz receivers from wafer-scalable InAs nanowires
- Abstract:
- Terahertz (THz) radiation will play a pivotal role in wireless communications, sensing, spectroscopy and imaging technologies in the decades to come. THz emitters and receivers should thus be simplified in their design and miniaturized to become a commodity. In this work we demonstrate scalable photoconductive THz receivers based on horizontally-grown InAs nanowires (NWs) embedded in a bow-tie antenna that work at room temperature. The NWs provide a short photoconductivity lifetime while conserving high electron mobility. The large surface-to-volume ratio also ensures low dark current and thus low thermal noise, compared to narrow-bandgap bulk devices. By engineering the NW morphology, the NWs exhibit greatly different photoconductivity lifetimes, enabling the receivers to detect THz photons via both direct and integrating sampling modes. The broadband NW receivers are compatible with gating lasers across the entire range of telecom wavelengths (1.2–1.6 μm) and thus are ideal for inexpensive all-optical fibre-based THz time-domain spectroscopy and imaging systems. The devices are deterministically positioned by lithography and thus scalable to the wafer scale, opening the path for a new generation of commercial THz receivers.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 1.6MB, Terms of use)
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- Publisher copy:
- 10.1038/s41467-023-44345-1
Authors
+ Engineering and Physical Sciences Research Council
More from this funder
- Grant:
- EP/T025077/1
- EP/W018489/1
- Publisher:
- Springer Nature
- Journal:
- Nature Communications More from this journal
- Volume:
- 15
- Issue:
- 1
- Article number:
- 103
- Publication date:
- 2024-01-02
- Acceptance date:
- 2023-12-09
- DOI:
- EISSN:
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2041-1723
- Language:
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English
- Keywords:
- Pubs id:
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1594358
- Local pid:
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pubs:1594358
- Deposit date:
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2024-01-02
Terms of use
- Copyright holder:
- Peng et al.
- Copyright date:
- 2024
- Rights statement:
- © The Author(s) 2024. Open Access. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder.
- Licence:
- CC Attribution (CC BY)
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