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Opromolla M, Bacci A, Rossetti Conti M, Rossi AR, Rossi G, Serafini L, Tagliaferri A, Petrillo V. High Repetition Rate and Coherent Free-Electron Laser Oscillator in the Tender X-ray Range Tailored for Linear Spectroscopy. Applied Sciences 2021; 11:5892. [DOI: 10.3390/app11135892] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Fine time-resolved analysis of matter—that is, spectroscopy and photon scattering—in the linear response regime requires fs-scale pulsed, high repetition rate, fully coherent X-ray sources. A seeded Free-Electron Laser, driven by a linac based on Super Conducting cavities, generating 108–1010 coherent photons at 2–5 keV with 0.2–1 MHz of repetition rate, can address this need. The scheme proposed is a Free-Electron Laser Oscillator at 3 keV, working with a cavity based on X-ray mirrors. The whole chain of the X-ray generation is here described by means of start-to-end simulations.
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Yan J, Gao Z, Qi Z, Zhang K, Zhou K, Liu T, Chen S, Feng C, Li C, Feng L, Lan T, Zhang W, Wang X, Li X, Jiang Z, Wang B, Wang Z, Gu D, Zhang M, Deng H, Gu Q, Leng Y, Yin L, Liu B, Wang D, Zhao Z. Self-Amplification of Coherent Energy Modulation in Seeded Free-Electron Lasers. Phys Rev Lett 2021; 126:084801. [PMID: 33709748 DOI: 10.1103/physrevlett.126.084801] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 01/18/2021] [Accepted: 02/03/2021] [Indexed: 06/12/2023]
Abstract
The spectroscopic techniques for time-resolved fine analysis of matter require coherent x-ray radiation with femtosecond duration and high average brightness. Seeded free-electron lasers (FELs), which use the frequency up-conversion of an external seed laser to improve temporal coherence, are ideal for providing fully coherent soft x-ray pulses. However, it is difficult to operate seeded FELs at a high repetition rate due to the limitations of present state-of-the-art laser systems. Here, we report a novel self-modulation method for enhancing laser-induced energy modulation, thereby significantly reducing the requirement of an external laser system. Driven by this scheme, we experimentally realize high harmonic generation in a seeded FEL using an unprecedentedly small external laser-induced energy modulation. An electron beam with a laser-induced energy modulation as small as 1.8 times the slice energy spread is used for lasing at the seventh harmonic of a 266-nm seed laser in a single-stage high-gain harmonic generation (HGHG) setup and the 30th harmonic of the seed laser in a two-stage HGHG setup. The results mark a major step toward a high-repetition-rate, fully coherent x-ray FEL.
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Affiliation(s)
- Jiawei Yan
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zhangfeng Gao
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zheng Qi
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Kaiqing Zhang
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Kaishang Zhou
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Tao Liu
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Si Chen
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Chao Feng
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Chunlei Li
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Lie Feng
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Taihe Lan
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Wenyan Zhang
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Xingtao Wang
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Xuan Li
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Zenggong Jiang
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Baoliang Wang
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Zhen Wang
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Duan Gu
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Meng Zhang
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Haixiao Deng
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Qiang Gu
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Yongbin Leng
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Lixin Yin
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Bo Liu
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Dong Wang
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Zhentang Zhao
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
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Seddon EA, Clarke JA, Dunning DJ, Masciovecchio C, Milne CJ, Parmigiani F, Rugg D, Spence JCH, Thompson NR, Ueda K, Vinko SM, Wark JS, Wurth W. Short-wavelength free-electron laser sources and science: a review. Rep Prog Phys 2017; 80:115901. [PMID: 29059048 DOI: 10.1088/1361-6633/aa7cca] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
This review is focused on free-electron lasers (FELs) in the hard to soft x-ray regime. The aim is to provide newcomers to the area with insights into: the basic physics of FELs, the qualities of the radiation they produce, the challenges of transmitting that radiation to end users and the diversity of current scientific applications. Initial consideration is given to FEL theory in order to provide the foundation for discussion of FEL output properties and the technical challenges of short-wavelength FELs. This is followed by an overview of existing x-ray FEL facilities, future facilities and FEL frontiers. To provide a context for information in the above sections, a detailed comparison of the photon pulse characteristics of FEL sources with those of other sources of high brightness x-rays is made. A brief summary of FEL beamline design and photon diagnostics then precedes an overview of FEL scientific applications. Recent highlights are covered in sections on structural biology, atomic and molecular physics, photochemistry, non-linear spectroscopy, shock physics, solid density plasmas. A short industrial perspective is also included to emphasise potential in this area.
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Affiliation(s)
- E A Seddon
- ASTeC, STFC Daresbury Laboratory, Sci-Tech Daresbury, Keckwick Lane, Daresbury, Cheshire, WA4 4AD, United Kingdom. The School of Physics and Astronomy and Photon Science Institute, The University of Manchester, Oxford Road, Manchester, M13 9PL, United Kingdom. The Cockcroft Institute, Sci-Tech Daresbury, Keckwick Lane, Daresbury, Cheshire, WA4 4AD, United Kingdom
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Feng C, Huang D, Deng H, Chen J, Xiang D, Liu B, Wang D, Zhao Z. A single stage EEHG at SXFEL for narrow-bandwidth soft X-ray generation. Sci Bull (Beijing) 2016; 61:1202-12. [DOI: 10.1007/s11434-016-1140-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Goh SJ, Reinink J, Tao Y, van der Slot PJM, Bastiaens HJM, Herek JL, Biedron SG, Milton SV, Boller KJ. Spectral control of high-harmonic generation via drive laser pulse shaping in a wide-diameter capillary. Opt Express 2016; 24:1604-1615. [PMID: 26832538 DOI: 10.1364/oe.24.001604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
We experimentally investigate spectral control of high-harmonic generation in a wide-diameter (508 μm) capillary that allows using significantly lower gas pressures coupled with elevated drive laser energies to achieve higher harmonic energies. Using phase shaping to change the linear chirp of the drive laser pulses, we observe wavelength tuning of the high-harmonic output to both larger and smaller values. Comparing tuning via the gas pressure with the amount of blue shift in the transmitted drive laser spectrum, we conclude that both adiabatic and non-adiabatic effects cause pulse-shaping induced tuning of high harmonics. We obtain a fractional wavelength tuning, Δλ/λ, in the range from -0.007 to + 0.01, which is comparable to what is achieved with standard capillaries of smaller diameter and higher pressures.
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Goh SJ, Tao Y, van der Slot PJM, Bastiaens HJM, Herek J, Biedron SG, Danailov MB, Milton SV, Boller KJ. Single-shot fluctuations in waveguided high-harmonic generation. Opt Express 2015; 23:24888-24902. [PMID: 26406689 DOI: 10.1364/oe.23.024888] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
For exploring the application potential of coherent soft x-ray (SXR) and extreme ultraviolet radiation (XUV) provided by high-harmonic generation, it is important to characterize the central output parameters. Of specific importance are pulse-to-pulse (shot-to-shot) fluctuations of the high-harmonic output energy, fluctuations of the direction of the emission (pointing instabilities), and fluctuations of the beam divergence and shape that reduce the spatial coherence. We present the first single-shot measurements of waveguided high-harmonic generation in a waveguided (capillary-based) geometry. Using a capillary waveguide filled with Argon gas as the nonlinear medium, we provide the first characterization of shot-to-shot fluctuations of the pulse energy, of the divergence and of the beam pointing. We record the strength of these fluctuations vs. two basic input parameters, which are the drive laser pulse energy and the gas pressure in the capillary waveguide. In correlation measurements between single-shot drive laser beam profiles and single-shot high-harmonic beam profiles we prove the absence of drive laser beam-pointing-induced fluctuations in the high-harmonic output. We attribute the main source of high-harmonic fluctuations to ionization-induced nonlinear mode mixing during propagation of the drive laser pulse inside the capillary waveguide.
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Petralia A, Anania MP, Artioli M, Bacci A, Bellaveglia M, Carpanese M, Chiadroni E, Cianchi A, Ciocci F, Dattoli G, Di Giovenale D, Di Palma E, Di Pirro GP, Ferrario M, Giannessi L, Innocenti L, Mostacci A, Petrillo V, Pompili R, Rau JV, Ronsivalle C, Rossi AR, Sabia E, Shpakov V, Vaccarezza C, Villa F. Two-Color Radiation Generated in a Seeded Free-Electron Laser with Two Electron Beams. Phys Rev Lett 2015; 115:014801. [PMID: 26182099 DOI: 10.1103/physrevlett.115.014801] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Indexed: 06/04/2023]
Abstract
We present the experimental evidence of the generation of coherent and statistically stable two-color free-electron laser radiation obtained by seeding an electron beam double peaked in energy with a laser pulse single spiked in frequency. The radiation presents two neat spectral lines, with time delay, frequency separation, and relative intensity that can be accurately controlled. The analysis of the emitted radiation shows a temporal coherence and a shot-to-shot regularity in frequency significantly enhanced with respect to the self-amplified spontaneous emission.
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Affiliation(s)
- A Petralia
- ENEA Centro Ricerche Frascati, Via Enrico Fermi 45, IT 00044 Frascati, Roma, Italy
| | - M P Anania
- INFN Laboratori Nazionali di Frascati, Via Enrico Fermi 44, 00044 Frascati, Roma, Italy
| | - M Artioli
- ENEA Centro Ricerche Bologna, Via Martiri Monte Sole 4, 40129 Bologna, Italy
| | - A Bacci
- INFN-Sezione di Milano, Via Celoria 16, 20133 Milano, Italy
| | - M Bellaveglia
- INFN Laboratori Nazionali di Frascati, Via Enrico Fermi 44, 00044 Frascati, Roma, Italy
| | - M Carpanese
- ENEA Centro Ricerche Frascati, Via Enrico Fermi 45, IT 00044 Frascati, Roma, Italy
| | - E Chiadroni
- INFN Laboratori Nazionali di Frascati, Via Enrico Fermi 44, 00044 Frascati, Roma, Italy
| | - A Cianchi
- Università Tor Vergata di Roma, Via della Ricerca Scientifica 1, 00133 Roma, Italy
| | - F Ciocci
- ENEA Centro Ricerche Frascati, Via Enrico Fermi 45, IT 00044 Frascati, Roma, Italy
| | - G Dattoli
- ENEA Centro Ricerche Frascati, Via Enrico Fermi 45, IT 00044 Frascati, Roma, Italy
| | - D Di Giovenale
- INFN Laboratori Nazionali di Frascati, Via Enrico Fermi 44, 00044 Frascati, Roma, Italy
| | - E Di Palma
- ENEA Centro Ricerche Frascati, Via Enrico Fermi 45, IT 00044 Frascati, Roma, Italy
| | - G P Di Pirro
- INFN Laboratori Nazionali di Frascati, Via Enrico Fermi 44, 00044 Frascati, Roma, Italy
| | - M Ferrario
- INFN Laboratori Nazionali di Frascati, Via Enrico Fermi 44, 00044 Frascati, Roma, Italy
| | - L Giannessi
- ENEA Centro Ricerche Frascati, Via Enrico Fermi 45, IT 00044 Frascati, Roma, Italy
| | - L Innocenti
- Università Tor Vergata di Roma, Via della Ricerca Scientifica 1, 00133 Roma, Italy
| | - A Mostacci
- Università La Sapienza di Roma, Via Antonio Scarpa 24, 00133 Roma, Italy
| | - V Petrillo
- INFN-Sezione di Milano, Via Celoria 16, 20133 Milano, Italy
- Università degli Studi di Milano, Via Celoria 16, 20133 Milano, Italy
| | - R Pompili
- INFN Laboratori Nazionali di Frascati, Via Enrico Fermi 44, 00044 Frascati, Roma, Italy
| | - J V Rau
- ISM-CNR, Via del Fosso del Cavaliere 100, 00133 Roma, Italy
| | - C Ronsivalle
- ENEA Centro Ricerche Frascati, Via Enrico Fermi 45, IT 00044 Frascati, Roma, Italy
| | - A R Rossi
- INFN-Sezione di Milano, Via Celoria 16, 20133 Milano, Italy
| | - E Sabia
- ENEA Centro Ricerche Frascati, Via Enrico Fermi 45, IT 00044 Frascati, Roma, Italy
| | - V Shpakov
- INFN Laboratori Nazionali di Frascati, Via Enrico Fermi 44, 00044 Frascati, Roma, Italy
| | - C Vaccarezza
- INFN Laboratori Nazionali di Frascati, Via Enrico Fermi 44, 00044 Frascati, Roma, Italy
| | - F Villa
- INFN Laboratori Nazionali di Frascati, Via Enrico Fermi 44, 00044 Frascati, Roma, Italy
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Schulz S, Grguraš I, Behrens C, Bromberger H, Costello JT, Czwalinna MK, Felber M, Hoffmann MC, Ilchen M, Liu HY, Mazza T, Meyer M, Pfeiffer S, Prędki P, Schefer S, Schmidt C, Wegner U, Schlarb H, Cavalieri AL. Femtosecond all-optical synchronization of an X-ray free-electron laser. Nat Commun 2015; 6:5938. [PMID: 25600823 PMCID: PMC4309427 DOI: 10.1038/ncomms6938] [Citation(s) in RCA: 143] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Accepted: 11/24/2014] [Indexed: 11/20/2022] Open
Abstract
Many advanced applications of X-ray free-electron lasers require pulse durations and time resolutions of only a few femtoseconds. To generate these pulses and to apply them in time-resolved experiments, synchronization techniques that can simultaneously lock all independent components, including all accelerator modules and all external optical lasers, to better than the delivered free-electron laser pulse duration, are needed. Here we achieve all-optical synchronization at the soft X-ray free-electron laser FLASH and demonstrate facility-wide timing to better than 30 fs r.m.s. for 90 fs X-ray photon pulses. Crucially, our analysis indicates that the performance of this optical synchronization is limited primarily by the free-electron laser pulse duration, and should naturally scale to the sub-10 femtosecond level with shorter X-ray pulses. Few-femtosecond synchronization at free-electron lasers is key for nearly all experimental applications, stable operation and future light source development. Here, Schulz et al. demonstrate all-optical synchronization of the soft X-ray FEL FLASH to better than 30 fs and illustrate a pathway to sub-10 fs.
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Affiliation(s)
- S Schulz
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - I Grguraš
- 1] Max Planck Institute for the Structure and Dynamics of Matter, Luruper Chaussee 149, 22761 Hamburg, Germany [2] Center for Free-electron Laser Science (CFEL), Luruper Chaussee 149, 22761 Hamburg, Germany [3] University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - C Behrens
- 1] Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany [2] SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - H Bromberger
- Max Planck Institute for the Structure and Dynamics of Matter, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - J T Costello
- School of Physical Sciences and National Center for Plasma Science and Technology (NCPST), Dublin City University, Glasnevin, Dublin 9, Ireland
| | - M K Czwalinna
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - M Felber
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - M C Hoffmann
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - M Ilchen
- European XFEL GmbH, Albert-Einstein-Ring 19, 22761 Hamburg, Germany
| | - H Y Liu
- Max Planck Institute for the Structure and Dynamics of Matter, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - T Mazza
- European XFEL GmbH, Albert-Einstein-Ring 19, 22761 Hamburg, Germany
| | - M Meyer
- European XFEL GmbH, Albert-Einstein-Ring 19, 22761 Hamburg, Germany
| | - S Pfeiffer
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - P Prędki
- Department of Microelectronics and Computer Science, Lodz University of Technology, ul. Wólczanska 221/223, 90-924 Łódź, Poland
| | - S Schefer
- University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - C Schmidt
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - U Wegner
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - H Schlarb
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - A L Cavalieri
- 1] Max Planck Institute for the Structure and Dynamics of Matter, Luruper Chaussee 149, 22761 Hamburg, Germany [2] Center for Free-electron Laser Science (CFEL), Luruper Chaussee 149, 22761 Hamburg, Germany [3] University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
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Lambert G, Andreev A, Gautier J, Giannessi L, Malka V, Petralia A, Sebban S, Stremoukhov S, Tissandier F, Vodungbo B, Zeitoun P. Spatial properties of odd and even low order harmonics generated in gas. Sci Rep 2015; 5:7786. [PMID: 25585715 PMCID: PMC4293601 DOI: 10.1038/srep07786] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Accepted: 12/15/2014] [Indexed: 11/21/2022] Open
Abstract
High harmonic generation in gases is developing rapidly as a soft X-ray femtosecond light-source for applications. This requires control over all the harmonics characteristics and in particular, spatial properties have to be kept very good. In previous literature, measurements have always included several harmonics contrary to applications, especially spectroscopic applications, which usually require a single harmonic. To fill this gap, we present here for the first time a detailed study of completely isolated harmonics. The contribution of the surrounding harmonics has been totally suppressed using interferential filtering which is available for low harmonic orders. In addition, this allows to clearly identify behaviors of standard odd orders from even orders obtained by frequency-mixing of a fundamental laser and of its second harmonic. Comparisons of the spatial intensity profiles, of the spatial coherence and of the wavefront aberration level of 5ω at 160 nm and 6ω at 135 nm have then been performed. We have established that the fundamental laser beam aberrations can cause the appearance of a non-homogenous donut-shape in the 6ω spatial intensity distribution. This undesirable effect can be easily controlled. We finally conclude that the spatial quality of an even harmonic can be as excellent as in standard generation.
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Affiliation(s)
- G Lambert
- Laboratoire d'Optique Appliquée, UMR 7639, ENSTA-CNRS-École Polytechnique, Chemin de la Hunière, 91761 Palaiseau, France
| | - A Andreev
- Faculty of Physics, Lomonosov Moscow State University, Leninskie Gory, 1, build.2, 119991, Moscow, Russia
| | - J Gautier
- Laboratoire d'Optique Appliquée, UMR 7639, ENSTA-CNRS-École Polytechnique, Chemin de la Hunière, 91761 Palaiseau, France
| | - L Giannessi
- Unità Tecnica Sviluppo di Applicazioni della Radiazione - Modellistica Matematica, ENEA Centro Ricerche Frascati, Via Enrico Fermi 45, 00044 Frascati, Italy
| | - V Malka
- Laboratoire d'Optique Appliquée, UMR 7639, ENSTA-CNRS-École Polytechnique, Chemin de la Hunière, 91761 Palaiseau, France
| | - A Petralia
- Unità Tecnica Sviluppo di Applicazioni della Radiazione - Modellistica Matematica, ENEA Centro Ricerche Frascati, Via Enrico Fermi 45, 00044 Frascati, Italy
| | - S Sebban
- Laboratoire d'Optique Appliquée, UMR 7639, ENSTA-CNRS-École Polytechnique, Chemin de la Hunière, 91761 Palaiseau, France
| | - S Stremoukhov
- 1] Faculty of Physics, Lomonosov Moscow State University, Leninskie Gory, 1, build.2, 119991, Moscow, Russia [2] National Research Centre "Kurchatov Institute", pl. Akademika Kurchatova, 1, Moscow, 123182 Russia
| | - F Tissandier
- Laboratoire d'Optique Appliquée, UMR 7639, ENSTA-CNRS-École Polytechnique, Chemin de la Hunière, 91761 Palaiseau, France
| | - B Vodungbo
- Laboratoire d'Optique Appliquée, UMR 7639, ENSTA-CNRS-École Polytechnique, Chemin de la Hunière, 91761 Palaiseau, France
| | - Ph Zeitoun
- Laboratoire d'Optique Appliquée, UMR 7639, ENSTA-CNRS-École Polytechnique, Chemin de la Hunière, 91761 Palaiseau, France
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Togashi T, Takahashi E, Midorikawa K, Aoyama M, Yamakawa K, Sato T, Iwasaki A, Owada S, Yamanouchi K, Hara T, Matsubara S, Ohshima T, Otake Y, Tamasaku K, Tanaka H, Tanaka T, Tomizawa H, Watanabe T, Yabashi M, Ishikawa T. Extreme ultraviolet free electron laser seeded by high-order harmonic. Radiat Phys Chem Oxf Engl 1993 2013. [DOI: 10.1016/j.radphyschem.2013.06.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Ackermann S, Azima A, Bajt S, Bödewadt J, Curbis F, Dachraoui H, Delsim-Hashemi H, Drescher M, Düsterer S, Faatz B, Felber M, Feldhaus J, Hass E, Hipp U, Honkavaara K, Ischebeck R, Khan S, Laarmann T, Lechner C, Maltezopoulos T, Miltchev V, Mittenzwey M, Rehders M, Rönsch-Schulenburg J, Rossbach J, Schlarb H, Schreiber S, Schroedter L, Schulz M, Schulz S, Tarkeshian R, Tischer M, Wacker V, Wieland M. Generation of coherent 19- and 38-nm radiation at a free-electron laser directly seeded at 38 nm. Phys Rev Lett 2013; 111:114801. [PMID: 24074093 DOI: 10.1103/physrevlett.111.114801] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Indexed: 05/24/2023]
Abstract
Initiating the gain process in a free-electron laser (FEL) from an external highly coherent source of radiation is a promising way to improve the pulse properties such as temporal coherence and synchronization performance in time-resolved pump-probe experiments at FEL facilities, but this so-called "seeding" suffers from the lack of adequate sources at short wavelengths. We report on the first successful seeding at a wavelength as short as 38.2 nm, resulting in GW-level, coherent FEL radiation pulses at this wavelength as well as significant second harmonic emission at 19.1 nm. The external seed pulses are about 1 order of magnitude shorter compared to previous experiments allowing an ultimate time resolution for the investigation of dynamic processes enabling breakthroughs in ultrafast science with FELs. The seeding pulse is the 21st harmonic of an 800-nm, 15-fs (rms) laser pulse generated in an argon medium. Methods for finding the overlap of seed pulses with electron bunches in spatial, longitudinal, and spectral dimensions are discussed and results are presented. The experiment was conducted at FLASH, the FEL user facility at DESY in Hamburg, Germany.
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Affiliation(s)
- S Ackermann
- Department of Physics, University of Hamburg, 22761 Hamburg, Germany and Deutsches Elektronen-Synchrotron DESY, 22607 Hamburg, Germany
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Couprie ME, Benabderrahmane C, Betinelli P, Bouvet F, Buteau A, Cassinari L, Daillant J, Denard JC, Eymard P, Gagey B, Herbeaux C, Labat M, Lagarde B, Lestrade A, Loulergue A, Marchand P, Marlats JL, Miron C, Morin P, Nadji A, Polack F, Pruvost JB, Ribeiro F, Ricaud JP, Roy P, Tanikawa T, Roux R, Bielawski S, Evain C, Szwaj C, Lambert G, Lifschitz A, Malka V, Lehe R, Rousse A, Phuoc KT, Thaury C, Devanz G, Luong M, Carré B, LeBec G, Farvacque L, Dubois A, Lüning J. The LUNEX5 project in France. ACTA ACUST UNITED AC 2013. [DOI: 10.1088/1742-6596/425/7/072001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Chiadroni E, Bellaveglia M, Calvani P, Castellano M, Catani L, Cianchi A, Di Pirro G, Ferrario M, Gatti G, Limaj O, Lupi S, Marchetti B, Mostacci A, Pace E, Palumbo L, Ronsivalle C, Pompili R, Vaccarezza C. Characterization of the THz radiation source at the Frascati linear accelerator. Rev Sci Instrum 2013; 84:022703. [PMID: 23464185 DOI: 10.1063/1.4790429] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The linac driven coherent THz radiation source at the SPARC-LAB test facility is able to deliver broadband THz pulses with femtosecond shaping. In addition, high peak power, narrow spectral bandwidth THz radiation can be also generated, taking advantage of advanced electron beam manipulation techniques, able to generate an adjustable train of electron bunches with a sub-picosecond length and with sub-picosecond spacing. The paper reports on the manipulation, characterization, and transport of the electron beam in the bending line transporting the beam down to the THz station, where different coherent transition radiation spectra have been measured and studied with the aim to optimize the THz radiation performances.
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Giannessi L, Bellaveglia M, Chiadroni E, Cianchi A, Couprie ME, Del Franco M, Di Pirro G, Ferrario M, Gatti G, Labat M, Marcus G, Mostacci A, Petralia A, Petrillo V, Quattromini M, Rau JV, Spampinati S, Surrenti V. Superradiant cascade in a seeded free-electron laser. Phys Rev Lett 2013; 110:044801. [PMID: 25166168 DOI: 10.1103/physrevlett.110.044801] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2012] [Indexed: 06/03/2023]
Abstract
We report measurements demonstrating the concept of the free-electron laser (FEL) superradiant cascade. Radiation (λ(rad) = 200 nm) at the second harmonic of a short, intense seed laser pulse (λ(seed) = 400 nm) was generated by the cascaded FEL scheme at the transition between the modulator and radiator undulator sections. The superradiance of the ultrashort pulse is confirmed by detailed measurements of the resulting spectral structure, the intensity level of the produced harmonics, and the trend of the energy growth along the undulator. These results are compared to numerical particle simulations using the FEL code GENESIS 1.3 and show a satisfactory agreement.
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Affiliation(s)
- L Giannessi
- ENEA C.R. Frascati, Via E. Fermi, 45 00044 Frascati, Roma, Italy
| | - M Bellaveglia
- INFN-LNF, Via E. Fermi, 40 00044 Frascati, Roma, Italy
| | - E Chiadroni
- INFN-LNF, Via E. Fermi, 40 00044 Frascati, Roma, Italy
| | - A Cianchi
- INFN-Roma Tor Vergata and Università di Roma Tor Vergata, Via della Ricerca Scientifica, 1-00133 Rome, Italy
| | - M E Couprie
- SOLEIL, L'Orme des Merisiers Saint-Aubin, BP 48 91192 GIF-sur-Yvette, Cedex, France
| | - M Del Franco
- ENEA C.R. Frascati, Via E. Fermi, 45 00044 Frascati, Roma, Italy
| | - G Di Pirro
- INFN-LNF, Via E. Fermi, 40 00044 Frascati, Roma, Italy
| | - M Ferrario
- INFN-LNF, Via E. Fermi, 40 00044 Frascati, Roma, Italy
| | - G Gatti
- INFN-LNF, Via E. Fermi, 40 00044 Frascati, Roma, Italy
| | - M Labat
- ENEA C.R. Frascati, Via E. Fermi, 45 00044 Frascati, Roma, Italy and SOLEIL, L'Orme des Merisiers Saint-Aubin, BP 48 91192 GIF-sur-Yvette, Cedex, France
| | - G Marcus
- Department of Physics and Astronomy, Particle Beam Physics Laboratory, UCLA, Los Angeles, California 90095, USA
| | - A Mostacci
- Università La Sapienza, Piazzale Aldo Moro, 1 00185 Roma, Italy
| | - A Petralia
- ENEA C.R. Frascati, Via E. Fermi, 45 00044 Frascati, Roma, Italy
| | - V Petrillo
- Università degli Studi di Milano and INFN-Mi, Via Celoria, 16 20133 Milano, Italy
| | - M Quattromini
- ENEA C.R. Frascati, Via E. Fermi, 45 00044 Frascati, Roma, Italy
| | - J V Rau
- ISM-CNR Via del Fosso del Cavaliere, 100 00133 Roma, Italy
| | - S Spampinati
- Sincrotrone Trieste S.C.p.A., Area Science Park, S.S. 14 Km 163.5, I-34149 Trieste, Italy
| | - V Surrenti
- ENEA C.R. Frascati, Via E. Fermi, 45 00044 Frascati, Roma, Italy
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Giannessi L, Artioli M, Bellaveglia M, Briquez F, Chiadroni E, Cianchi A, Couprie ME, Dattoli G, Di Palma E, Di Pirro G, Ferrario M, Filippetto D, Frassetto F, Gatti G, Labat M, Marcus G, Mostacci A, Petralia A, Petrillo V, Poletto L, Quattromini M, Rau JV, Rosenzweig J, Sabia E, Serluca M, Spassovsky I, Surrenti V. High-order-harmonic generation and superradiance in a seeded free-electron laser. Phys Rev Lett 2012; 108:164801. [PMID: 22680723 DOI: 10.1103/physrevlett.108.164801] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2012] [Indexed: 06/01/2023]
Abstract
Higher order harmonic generation in a free-electron laser amplifier operating in the superradiant regime [R. H. Dicke, Phys. Rev. 93, 99 (1954).] has been observed. Superradiance has been induced by seeding a single-pass amplifier with the second harmonic of a Ti:sapphire laser, generated in a β-Barium borate crystal, at seed intensities comparable to the free-electron laser saturation intensity. Pulse energy and spectral distributions of the harmonics up to the 11th order have been measured and compared with simulations.
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Affiliation(s)
- L Giannessi
- ENEA C.R. Frascati, Via E. Fermi, 45 00044 Frascati, Roma, Italy.
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