Baillergeau, M, Maussang, K, Nirrengarten, T et al. (7 more authors) (2016) Diffraction-limited ultrabroadband terahertz spectroscopy. Scientific Reports, 6. 24811. ISSN 2045-2322
Abstract
Diffraction is the ultimate limit at which details of objects can be resolved in conventional optical spectroscopy and imaging systems. In the THz spectral range, spectroscopy systems increasingly rely on ultra-broadband radiation (extending over more 5 octaves) making a great challenge to reach resolution limited by diffraction. Here, we propose an original easy-to-implement wavefront manipulation concept to achieve ultrabroadband THz spectroscopy system with diffraction-limited resolution. Applying this concept to a large-area photoconductive emitter, we demonstrate diffraction-limited ultra-broadband spectroscopy system up to 14.5 THz with a dynamic range of 103. The strong focusing of ultrabroadband THz radiation provided by our approach is essential for investigating single micrometer-scale objects such as graphene flakes or living cells, and besides for achieving intense ultra-broadband THz electric fields.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2016, the Author(s). This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
Keywords: | optical spectroscopy; terahertz optics |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Electronic & Electrical Engineering (Leeds) > Pollard Institute (Leeds) |
Funding Information: | Funder Grant number Royal Society WM110032 EPSRC EP/J017671/1 Royal Society WM150029 |
Depositing User: | Symplectic Publications |
Date Deposited: | 06 May 2016 10:24 |
Last Modified: | 27 Mar 2019 11:18 |
Published Version: | http://dx.doi.org/10.1038/srep24811 |
Status: | Published |
Publisher: | Nature Publishing Group |
Identification Number: | 10.1038/srep24811 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:99325 |
Commentary/Response Threads
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Baillergeau, M, Maussang, K, Nirrengarten, T, Palomo, J, Li, LH, Linfield, EH, Davies, AG, Dhillon, S, Tignon, J and Mangeney, J
Diffraction-limited ultrabroadband terahertz spectroscopy. (deposited 06 May 2016 10:24)
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- Baillergeau, M, Maussang, K, Nirrengarten, T, Palomo, J, Li, LH, Linfield, EH, Davies, AG, Dhillon, S, Tignon, J and Mangeney, J Author Correction: Diffraction-limited ultrabroadband terahertz spectroscopy. (deposited 03 Jul 2020 15:22)