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Kim YH, Kim H, Park SC, Kwon Y, Yeom K, Cho W, Kwon T, Yun H, Sung JH, Lee SK, Luu TT, Nam CH, Kim KT. High-harmonic generation from a flat liquid-sheet plasma mirror. Nat Commun 2023; 14:2328. [PMID: 37087465 PMCID: PMC10122666 DOI: 10.1038/s41467-023-38087-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Accepted: 04/14/2023] [Indexed: 04/24/2023] Open
Abstract
High-harmonic radiation can be generated when an ultra-intense laser beam is reflected from an over-dense plasma, known as a plasma mirror. It is considered a promising technique for generating intense attosecond pulses in the extreme ultraviolet and X-ray wavelength ranges. However, a solid target used for the formation of the over-dense plasma is completely damaged by the interaction. Thus, it is challenging to use a solid target for applications such as time-resolved studies and attosecond streaking experiments that require a large amount of data. Here we demonstrate that high-harmonic radiation can be continuously generated from a liquid plasma mirror in both the coherent wake emission and relativistic oscillating mirror regimes. These results will pave the way for the development of bright, stable, and high-repetition-rate attosecond light sources, which can greatly benefit the study of ultrafast laser-matter interactions.
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Affiliation(s)
- Yang Hwan Kim
- Center for Relativistic Laser Science, Institute for Basic Science, Gwangju, 61005, Republic of Korea
| | - Hyeon Kim
- Center for Relativistic Laser Science, Institute for Basic Science, Gwangju, 61005, Republic of Korea
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Seong Cheol Park
- Center for Relativistic Laser Science, Institute for Basic Science, Gwangju, 61005, Republic of Korea
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Yongjin Kwon
- Center for Relativistic Laser Science, Institute for Basic Science, Gwangju, 61005, Republic of Korea
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Kyunghoon Yeom
- Center for Relativistic Laser Science, Institute for Basic Science, Gwangju, 61005, Republic of Korea
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Wosik Cho
- Center for Relativistic Laser Science, Institute for Basic Science, Gwangju, 61005, Republic of Korea
| | - Taeyong Kwon
- Center for Relativistic Laser Science, Institute for Basic Science, Gwangju, 61005, Republic of Korea
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Hyeok Yun
- Advanced Photonics Research Institute, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Jae Hee Sung
- Center for Relativistic Laser Science, Institute for Basic Science, Gwangju, 61005, Republic of Korea
- Advanced Photonics Research Institute, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Seong Ku Lee
- Center for Relativistic Laser Science, Institute for Basic Science, Gwangju, 61005, Republic of Korea
- Advanced Photonics Research Institute, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Tran Trung Luu
- Department of Physics, The University of Hong Kong, SAR Hong Kong, China
| | - Chang Hee Nam
- Center for Relativistic Laser Science, Institute for Basic Science, Gwangju, 61005, Republic of Korea
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea
| | - Kyung Taec Kim
- Center for Relativistic Laser Science, Institute for Basic Science, Gwangju, 61005, Republic of Korea.
- Department of Physics and Photon Science, Gwangju Institute of Science and Technology, Gwangju, 61005, Republic of Korea.
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Chen ZY, Qin R. Circularly polarized extreme ultraviolet high harmonic generation in graphene. OPTICS EXPRESS 2019; 27:3761-3770. [PMID: 30732390 DOI: 10.1364/oe.27.003761] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Accepted: 01/03/2019] [Indexed: 06/09/2023]
Abstract
Circularly polarized extreme ultraviolet (XUV) radiation is highly interesting for investigation of chirality-sensitive light-matter interactions. Recent breakthroughs have enabled the generation of such light sources via high harmonic generation (HHG) from rare gases. There is a growing interest in extending HHG medium from gases to solids, especially to 2D materials, as they hold great promise to develop ultra-compact solid-state photonic devices and provide insights into electronic properties of the materials themselves. However, so far reported, HHG in graphene driven by terahertz to mid-infrared fields generates only low harmonic orders, and no harmonics driven by circularly polarized lasers have been reported. Here, using first-principles simulations within a time-dependent density-functional theory framework, we show that it is possible to generate HHG extending to the XUV spectral region in monolayer extended graphene excited by near-infrared lasers. Moreover, we demonstrate that a single circularly polarized driver is enough to ensure HHG in graphene with circular polarization. The corresponding spectra reflect the six-fold rotational symmetry of the graphene crystal. Extending HHG in graphene to the XUV spectral regime and realizing circular polarization represent an important step toward the development of novel nanoscale attosecond photonic devices and numerous applications, such as spectroscopic investigation and nanoscale imaging of ultrafast chiral and spin dynamics in graphene and other 2D materials.
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Fuchs S, Rödel C, Blinne A, Zastrau U, Wünsche M, Hilbert V, Glaser L, Viefhaus J, Frumker E, Corkum P, Förster E, Paulus GG. Nanometer resolution optical coherence tomography using broad bandwidth XUV and soft x-ray radiation. Sci Rep 2016; 6:20658. [PMID: 26860894 PMCID: PMC4748318 DOI: 10.1038/srep20658] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 01/06/2016] [Indexed: 11/09/2022] Open
Abstract
Optical coherence tomography (OCT) is a non-invasive technique for cross-sectional imaging. It is particularly advantageous for applications where conventional microscopy is not able to image deeper layers of samples in a reasonable time, e.g. in fast moving, deeper lying structures. However, at infrared and optical wavelengths, which are commonly used, the axial resolution of OCT is limited to about 1 μm, even if the bandwidth of the light covers a wide spectral range. Here, we present extreme ultraviolet coherence tomography (XCT) and thus introduce a new technique for non-invasive cross-sectional imaging of nanometer structures. XCT exploits the nanometerscale coherence lengths corresponding to the spectral transmission windows of, e.g., silicon samples. The axial resolution of coherence tomography is thus improved from micrometers to a few nanometers. Tomographic imaging with an axial resolution better than 18 nm is demonstrated for layer-type nanostructures buried in a silicon substrate. Using wavelengths in the water transmission window, nanometer-scale layers of platinum are retrieved with a resolution better than 8 nm. XCT as a nondestructive method for sub-surface tomographic imaging holds promise for several applications in semiconductor metrology and imaging in the water window.
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Affiliation(s)
- Silvio Fuchs
- Institute of Optics and Quantum Electronics, Friedrich-Schiller-University Jena, Jena, Germany.,Helmholtz-Institute Jena, Jena, Germany
| | - Christian Rödel
- Institute of Optics and Quantum Electronics, Friedrich-Schiller-University Jena, Jena, Germany.,SLAC National Accelerator Laboratory, Menlo Park, United States
| | - Alexander Blinne
- Institute of Optics and Quantum Electronics, Friedrich-Schiller-University Jena, Jena, Germany
| | - Ulf Zastrau
- Institute of Optics and Quantum Electronics, Friedrich-Schiller-University Jena, Jena, Germany
| | - Martin Wünsche
- Institute of Optics and Quantum Electronics, Friedrich-Schiller-University Jena, Jena, Germany.,Helmholtz-Institute Jena, Jena, Germany
| | - Vinzenz Hilbert
- Institute of Optics and Quantum Electronics, Friedrich-Schiller-University Jena, Jena, Germany
| | - Leif Glaser
- Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany
| | - Jens Viefhaus
- Deutsches Elektronen-Synchrotron DESY, Hamburg, Germany
| | - Eugene Frumker
- Joint Attosecond Science Lab, National Research Council of Canada, Ottawa, Canada
| | - Paul Corkum
- Joint Attosecond Science Lab, National Research Council of Canada, Ottawa, Canada
| | - Eckhart Förster
- Institute of Optics and Quantum Electronics, Friedrich-Schiller-University Jena, Jena, Germany.,Helmholtz-Institute Jena, Jena, Germany
| | - Gerhard G Paulus
- Institute of Optics and Quantum Electronics, Friedrich-Schiller-University Jena, Jena, Germany.,Helmholtz-Institute Jena, Jena, Germany
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