1
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Heighway PG, Sliwa M, McGonegle D, Wehrenberg C, Bolme CA, Eggert J, Higginbotham A, Lazicki A, Lee HJ, Nagler B, Park HS, Rudd RE, Smith RF, Suggit MJ, Swift D, Tavella F, Remington BA, Wark JS. Nonisentropic Release of a Shocked Solid. Phys Rev Lett 2019; 123:245501. [PMID: 31922830 DOI: 10.1103/physrevlett.123.245501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Revised: 09/09/2019] [Indexed: 06/10/2023]
Abstract
We present molecular dynamics simulations of shock and release in micron-scale tantalum crystals that exhibit postbreakout temperatures far exceeding those expected under the standard assumption of isentropic release. We show via an energy-budget analysis that this is due to plastic-work heating from material strength that largely counters thermoelastic cooling. The simulations are corroborated by experiments where the release temperatures of laser-shocked tantalum foils are deduced from their thermal strains via in situ x-ray diffraction and are found to be close to those behind the shock.
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Affiliation(s)
- P G Heighway
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - M Sliwa
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - D McGonegle
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - C Wehrenberg
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550, USA
| | - C A Bolme
- Los Alamos National Laboratory, Bikini Atoll Road, SM-30, Los Alamos, New Mexico 87545, USA
| | - J Eggert
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550, USA
| | - A Higginbotham
- York Plasma Institute, University of York, Heslington, York YO10 5DD, United Kingdom
| | - A Lazicki
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550, USA
| | - H J Lee
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - B Nagler
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - H-S Park
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550, USA
| | - R E Rudd
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550, USA
| | - R F Smith
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550, USA
| | - M J Suggit
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - D Swift
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550, USA
| | - F Tavella
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - B A Remington
- Lawrence Livermore National Laboratory, P.O. Box 808, Livermore, California 94550, USA
| | - J S Wark
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
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2
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Brown SB, Gleason AE, Galtier E, Higginbotham A, Arnold B, Fry A, Granados E, Hashim A, Schroer CG, Schropp A, Seiboth F, Tavella F, Xing Z, Mao W, Lee HJ, Nagler B. Direct imaging of ultrafast lattice dynamics. Sci Adv 2019; 5:eaau8044. [PMID: 30873430 PMCID: PMC6408150 DOI: 10.1126/sciadv.aau8044] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Accepted: 01/28/2019] [Indexed: 06/09/2023]
Abstract
Under rapid high-temperature, high-pressure loading, lattices exhibit complex elastic-inelastic responses. The dynamics of these responses are challenging to measure experimentally because of high sample density and extremely small relevant spatial and temporal scales. Here, we use an x-ray free-electron laser providing simultaneous in situ direct imaging and x-ray diffraction to spatially resolve lattice dynamics of silicon under high-strain rate conditions. We present the first imaging of a new intermediate elastic feature modulating compression along the axis of applied stress, and we identify the structure, compression, and density behind each observed wave. The ultrafast probe x-rays enabled time-resolved characterization of the intermediate elastic feature, which is leveraged to constrain kinetic inhibition of the phase transformation between 2 and 4 ns. These results not only address long-standing questions about the response of silicon under extreme environments but also demonstrate the potential for ultrafast direct measurements to illuminate new lattice dynamics.
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Affiliation(s)
- S. Brennan Brown
- Department of Mechanical Engineering, Stanford University, Building 530, 440 Escondido Mall, Stanford, CA 94305, USA
| | - A. E. Gleason
- Shock and Detonation Physics, Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, NM 87545, USA
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA
| | - E. Galtier
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA
| | - A. Higginbotham
- York Plasma Institute, Department of Physics, University of York, Heslington, YO10 5DD, UK
| | - B. Arnold
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA
| | - A. Fry
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA
| | - E. Granados
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA
| | - A. Hashim
- Department of Physics, University of California, Berkeley, Berkeley, CA 94720, USA
| | - C. G. Schroer
- Photon Science, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, D-22607 Hamburg, Germany
- Department Physik, Universität Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
| | - A. Schropp
- Photon Science, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, D-22607 Hamburg, Germany
| | - F. Seiboth
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA
- Photon Science, Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, D-22607 Hamburg, Germany
| | - F. Tavella
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA
| | - Z. Xing
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA
| | - W. Mao
- Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA
- Department of Geological Sciences, Stanford University, 367 Panama St., Stanford, CA 94305-2220, USA
| | - H. J. Lee
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA
| | - B. Nagler
- Linac Coherent Light Source, SLAC National Accelerator Laboratory, 2575 Sand Hill Rd., Menlo Park, CA 94025, USA
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3
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Sliwa M, McGonegle D, Wehrenberg C, Bolme CA, Heighway PG, Higginbotham A, Lazicki A, Lee HJ, Nagler B, Park HS, Rudd RE, Suggit MJ, Swift D, Tavella F, Zepeda-Ruiz L, Remington BA, Wark JS. Femtosecond X-Ray Diffraction Studies of the Reversal of the Microstructural Effects of Plastic Deformation during Shock Release of Tantalum. Phys Rev Lett 2018; 120:265502. [PMID: 30004719 DOI: 10.1103/physrevlett.120.265502] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2017] [Indexed: 06/08/2023]
Abstract
We have used femtosecond x-ray diffraction to study laser-shocked fiber-textured polycrystalline tantalum targets as the 37-253 GPa shock waves break out from the free surface. We extract the time and depth-dependent strain profiles within the Ta target as the rarefaction wave travels back into the bulk of the sample. In agreement with molecular dynamics simulations, the lattice rotation and the twins that are formed under shock compression are observed to be almost fully eliminated by the rarefaction process.
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Affiliation(s)
- M Sliwa
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - D McGonegle
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - C Wehrenberg
- Lawrence Livermore National Laboratory, PO Box 808, Livermore, California 94550, USA
| | - C A Bolme
- Los Alamos National Laboratory, Bikini Atoll Road, SM-30, Los Alamos, New Mexico 87545, USA
| | - P G Heighway
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - A Higginbotham
- York Plasma Institute, Department of Physics, University of York, Heslington, York YO10 5DD, United Kingdom
| | - A Lazicki
- Lawrence Livermore National Laboratory, PO Box 808, Livermore, California 94550, USA
| | - H J Lee
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - B Nagler
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - H S Park
- Lawrence Livermore National Laboratory, PO Box 808, Livermore, California 94550, USA
| | - R E Rudd
- Lawrence Livermore National Laboratory, PO Box 808, Livermore, California 94550, USA
| | - M J Suggit
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - D Swift
- Lawrence Livermore National Laboratory, PO Box 808, Livermore, California 94550, USA
| | - F Tavella
- SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, California 94025, USA
| | - L Zepeda-Ruiz
- Lawrence Livermore National Laboratory, PO Box 808, Livermore, California 94550, USA
| | - B A Remington
- Lawrence Livermore National Laboratory, PO Box 808, Livermore, California 94550, USA
| | - J S Wark
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
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4
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Wehrenberg CE, McGonegle D, Bolme C, Higginbotham A, Lazicki A, Lee HJ, Nagler B, Park HS, Remington BA, Rudd RE, Sliwa M, Suggit M, Swift D, Tavella F, Zepeda-Ruiz L, Wark JS. In situ X-ray diffraction measurement of shock-wave-driven twinning and lattice dynamics. Nature 2017; 550:496-499. [DOI: 10.1038/nature24061] [Citation(s) in RCA: 87] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 07/31/2017] [Indexed: 11/09/2022]
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5
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Tavella F, Korchagina D, Rodrigues J, Rémuzat C. Health Technology Assessment, Price and Reimbursement Review for Orphan Drugs In Italy. Value Health 2014; 17:A540. [PMID: 27201733 DOI: 10.1016/j.jval.2014.08.1733] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
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6
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Rodrigues J, Korchagina D, Rémuzat C, Brunet J, Tavella F. Orphan Drug Approvals In Europe: Historical Review and Trends. Value Health 2014; 17:A539. [PMID: 27201731 DOI: 10.1016/j.jval.2014.08.1731] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
| | | | | | - J Brunet
- Assistance Publique des Hôpitaux de Marseille, Marseille, France
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7
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Korchagina D, Tavella F, Rémuzat C, Kornfeld A, Toumi M. Comparative Analysis of Hta Decisions, Price and Reimbursement Level of Orphan Drugs In France and Italy. Value Health 2014; 17:A539-A540. [PMID: 27201730 DOI: 10.1016/j.jval.2014.08.1732] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Affiliation(s)
| | | | | | | | - M Toumi
- University of Marseille, Marseille, France
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8
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Hage A, Landgraf B, Taylor M, Wünsche M, Gangolf T, Höppner H, Prandolini MJ, Riedel R, Schulz M, Tavella F, Willner A, Yeung M, Paulus GG, Spielmann C, Dromey B, Zepf M. New design of a multi-jet target for quasi phase matching. Rev Sci Instrum 2014; 85:103105. [PMID: 25362369 DOI: 10.1063/1.4897269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
An improved dual-gas quasi-phase matching (QPM) foil target for high harmonic generation (HHG) is presented. The target can be setup with 12 individual gas inlets each feeding multiple nozzles separated by a minimum distance of 10 μm. Three-dimensional gas density profiles of these jets were measured using a Mach-Zehnder Interferometer. These measurements reveal how the jets influence the density of gas in adjacent jets and how this leads to increased local gas densities. The analysis shows that the gas profiles of the jets are well defined up to a distance of about 300 μm from the orifice. This target design offers experimental flexibility, not only for HHG/QPM investigations, but also for a wide range of experiments due to the large number of possible jet configurations. We demonstrate the application to controlled phase tuning in the extreme ultraviolet using a 1 kHz-10 mJ-30 fs-laser system where interference between two jets in the spectral range from 17 to 30 nm was observed.
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Affiliation(s)
- A Hage
- Deutsches Elektronensynchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
| | - B Landgraf
- Institute of Optics and Quantum Electronics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany
| | - M Taylor
- School of Mathematics and Physics, Queen's University, University Road, Belfast BT7 1NN, United Kingdom
| | - M Wünsche
- Institute of Optics and Quantum Electronics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany
| | - T Gangolf
- Institute of Optics and Quantum Electronics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany
| | - H Höppner
- Deutsches Elektronensynchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
| | - M J Prandolini
- Helmholtzinstitut Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - R Riedel
- Helmholtzinstitut Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - M Schulz
- Deutsches Elektronensynchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
| | - F Tavella
- Helmholtzinstitut Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - A Willner
- Deutsches Elektronensynchrotron (DESY), Notkestrasse 85, 22607 Hamburg, Germany
| | - M Yeung
- School of Mathematics and Physics, Queen's University, University Road, Belfast BT7 1NN, United Kingdom
| | - G G Paulus
- Institute of Optics and Quantum Electronics, Abbe Center of Photonics, Friedrich-Schiller-Universität Jena, Max-Wien-Platz 1, 07743 Jena, Germany
| | - C Spielmann
- Helmholtzinstitut Jena, Helmholtzweg 4, 07743 Jena, Germany
| | - B Dromey
- School of Mathematics and Physics, Queen's University, University Road, Belfast BT7 1NN, United Kingdom
| | - M Zepf
- School of Mathematics and Physics, Queen's University, University Road, Belfast BT7 1NN, United Kingdom
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9
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Riedel R, Rothhardt J, Beil K, Gronloh B, Klenke A, Höppner H, Schulz M, Teubner U, Kränkel C, Limpert J, Tünnermann A, Prandolini MJ, Tavella F. Thermal properties of borate crystals for high power optical parametric chirped-pulse amplification. Opt Express 2014; 22:17607-17619. [PMID: 25089381 DOI: 10.1364/oe.22.017607] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The potential of borate crystals, BBO, LBO and BiBO, for high average power scaling of optical parametric chirped-pulse amplifiers is investigated. Up-to-date measurements of the absorption coefficients at 515 nm and the thermal conductivities are presented. The measured absorption coefficients are a factor of 10-100 lower than reported by the literature for BBO and LBO. For BBO, a large variation of the absorption coefficients was found between crystals from different manufacturers. The linear and nonlinear absorption coefficients at 515 nm as well as thermal conductivities were determined for the first time for BiBO. Further, different crystal cooling methods are presented. In addition, the limits to power scaling of OPCPAs are discussed.
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10
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Riedel R, Stephanides A, Prandolini MJ, Gronloh B, Jungbluth B, Mans T, Tavella F. Power scaling of supercontinuum seeded megahertz-repetition rate optical parametric chirped pulse amplifiers. Opt Lett 2014; 39:1422-1424. [PMID: 24690803 DOI: 10.1364/ol.39.001422] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Optical parametric chirped-pulse amplifiers with high average power are possible with novel high-power Yb:YAG amplifiers with kW-level output powers. We demonstrate a compact wavelength-tunable sub-30-fs amplifier with 11.4 W average power with 20.7% pump-to-signal conversion efficiency. For parametric amplification, a beta-barium borate crystal is pumped by a 140 W, 1 ps Yb:YAG InnoSlab amplifier at 3.25 MHz repetition rate. The broadband seed is generated via supercontinuum generation in a YAG crystal.
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11
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Prandolini MJ, Riedel R, Schulz M, Hage A, Höppner H, Tavella F. Design considerations for a high power, ultrabroadband optical parametric chirped-pulse amplifier. Opt Express 2014; 22:1594-1607. [PMID: 24515165 DOI: 10.1364/oe.22.001594] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
A conceptual design of a high power, ultrabroadband optical parametric chirped-pulse amplifier (OPCPA) was carried out comparing nonlinear crystals (LBO and BBO) for 810 nm centered, sub-7.0 fs pulses with energies above 1 mJ. These amplifiers are only possible with a parallel development of kilowatt-level OPCPA-pump amplifiers. It is therefore important to know good strategies to use the available OPCPA-pump energy efficiently. Numerical simulations, including self- and cross-phase modulation, were used to investigate the critical parameters to achieve sufficient spectral and spatial quality. At high output powers, thermal absorption in the nonlinear crystals starts to degrade the output beam quality. Strategies to minimize thermal effects and limits to the maximum average power are discussed.
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12
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Riedel R, Schulz M, Prandolini MJ, Hage A, Höppner H, Gottschall T, Limpert J, Drescher M, Tavella F. Long-term stabilization of high power optical parametric chirped-pulse amplifiers. Opt Express 2013; 21:28987-28999. [PMID: 24514414 DOI: 10.1364/oe.21.028987] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
The long-term stability of optical parametric chirped-pulse amplifiers is hindered by thermal path length drifts affecting the temporal pump-to-signal overlap. A kilowatt-pumped burst amplifier is presented delivering broadband 1.4 mJ pulses with a spectral bandwidth supporting sub-7 fs pulse duration. Active temporal overlap control can be achieved by feedback of optical timing signals from cross-correlation or spectral measurements. Using a balanced optical cross-correlator, we achieve a pump-to-signal synchronization with a residual jitter of only (46 ± 2) fs rms. Additionally, we propose passive pump-to-signal stabilization with an intrinsic jitter of (7.0 ± 0.5) fs rms using white-light continuum generation.
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13
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Willner A, Hage A, Riedel R, Grguraš I, Simoncig A, Schulz M, Dzelzainis T, Höppner H, Huber S, Prandolini MJ, Dromey B, Zepf M, Cavalieri AL, Tavella F. Coherent spectral enhancement of carrier-envelope-phase stable continua with dual-gas high harmonic generation. Opt Lett 2012; 37:3672-3674. [PMID: 22940986 DOI: 10.1364/ol.37.003672] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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
Attosecond science is enabled by the ability to convert femtosecond near-infrared laser light into coherent harmonics in the extreme ultraviolet spectral range. While attosecond sources have been utilized in experiments that have not demanded high intensities, substantially higher photon flux would provide a natural link to the next significant experimental breakthrough. Numerical simulations of dual-gas high harmonic generation indicate that the output in the cutoff spectral region can be selectively enhanced without disturbing the single-atom gating mechanism. Here, we summarize the results of these simulations and present first experimental findings to support these predictions.
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Affiliation(s)
- A Willner
- Deutsches Elektronensynchrotron (DESY), Hamburg, Germany.
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14
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Schulz M, Riedel R, Willner A, Düsterer S, Prandolini MJ, Feldhaus J, Faatz B, Rossbach J, Drescher M, Tavella F. Pulsed operation of a high average power Yb:YAG thin-disk multipass amplifier. Opt Express 2012; 20:5038-5043. [PMID: 22418308 DOI: 10.1364/oe.20.005038] [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] [Indexed: 05/31/2023]
Abstract
An Yb:YAG thin-disk multipass laser amplifier system was developed operating in a 10 Hz burst operation mode with 800 µs burst duration and 100 kHz intra-burst repetition rate. Methods for the suppression of parasitic amplified spontaneous emission are presented. The average output pulse energy is up to 44.5 mJ and 820 fs compressed pulse duration. The average power of 4.45 kW during the burst is the highest reported for this type of amplifier.
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Affiliation(s)
- M Schulz
- Deutsches Elektronensynchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany.
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15
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Willner A, Tavella F, Yeung M, Dzelzainis T, Kamperidis C, Bakarezos M, Adams D, Schulz M, Riedel R, Hoffmann MC, Hu W, Rossbach J, Drescher M, Papadogiannis NA, Tatarakis M, Dromey B, Zepf M. Coherent control of high harmonic generation via dual-gas multijet arrays. Phys Rev Lett 2011; 107:175002. [PMID: 22107529 DOI: 10.1103/physrevlett.107.175002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/08/2011] [Indexed: 05/31/2023]
Abstract
High harmonic generation (HHG) is a central driver of the rapidly growing field of ultrafast science. We present a novel quasiphase-matching (QPM) concept with a dual-gas multijet target leading, for the first time, to remarkable phase control between multiple HHG sources (>2) within the Rayleigh range. The alternating jet structure with driving and matching zones shows perfect coherent buildup for up to six QPM periods. Although not in the focus of the proof-of-principle studies presented here, we achieved competitive conversion efficiencies already in this early stage of development.
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Affiliation(s)
- A Willner
- Deutsches Elektronen Synchrotron, Notkestrasse 85, 22607 Hamburg, Germany
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16
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Schulz M, Riedel R, Willner A, Mans T, Schnitzler C, Russbueldt P, Dolkemeyer J, Seise E, Gottschall T, Hädrich S, Duesterer S, Schlarb H, Feldhaus J, Limpert J, Faatz B, Tünnermann A, Rossbach J, Drescher M, Tavella F. Yb:YAG Innoslab amplifier: efficient high repetition rate subpicosecond pumping system for optical parametric chirped pulse amplification. Opt Lett 2011; 36:2456-2458. [PMID: 21725443 DOI: 10.1364/ol.36.002456] [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] [Indexed: 05/31/2023]
Abstract
We report on a Yb:YAG Innoslab laser amplifier system for generation of subpicsecond high energy pump pulses for optical parametric chirped pulse amplification (OPCPA) at high repetition rates. Pulse energies of up to 20 mJ (at 12.5 kHz) and repetition rates of up to 100 kHz were attained with pulse durations of 830 fs and average power in excess of 200 W. We further investigate the possibility to use subpicosecond pulses to derive a stable continuum in a YAG crystal for OPCPA seeding.
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Affiliation(s)
- M Schulz
- Deutsches Elektronensynchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany.
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17
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Johnsson P, Rouzée A, Siu W, Huismans Y, Lépine F, Marchenko T, Düsterer S, Tavella F, Stojanovic N, Redlin H, Azima A, Vrakking MJJ. Characterization of a two-color pump-probe setup at FLASH using a velocity map imaging spectrometer. Opt Lett 2010; 35:4163-4165. [PMID: 21165124 DOI: 10.1364/ol.35.004163] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We report on the implementation of a high-count-rate charged particle imaging detector for two-color pump-probe experiments at the free electron laser in Hamburg (FLASH). In doing so, we have developed a procedure for finding the spatial and temporal overlap between the extreme UV free electron laser (FEL) pulses and the IR pulses, which allows for complete alignment of the setup in situations where the region of overlap between the FEL and the IR is not easily accessible by means of imaging optics.
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Affiliation(s)
- P Johnsson
- Foundation for Fundamental Research on Matter-Institute for Atomic and Molecular Physics, Science Park 104, 1098 XG Amsterdam, The Netherlands.
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18
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Hädrich S, Rothhardt J, Krebs M, Tavella F, Willner A, Limpert J, Tünnermann A. High harmonic generation by novel fiber amplifier based sources. Opt Express 2010; 18:20242-20250. [PMID: 20940915 DOI: 10.1364/oe.18.020242] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Significant progress in high repetition rate ultrashort pulse sources based on fiber technology is presented. These systems enable operation at a high repetition rate of up to 500 kHz and high average power in the extreme ultraviolet wavelength range via high harmonic generation in a gas jet. High average power few-cycle pulses of a fiber amplifier pumped optical parametric chirped pulse amplifier are used to produce µW level average power for the strongest harmonic at 42.9 nm at a repetition rate of 96 kHz.
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Affiliation(s)
- S Hädrich
- Friedrich Schiller University Jena, Institute of Applied Physics, Jena, Germany.
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19
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Rothhardt J, Hädrich S, Seise E, Krebs M, Tavella F, Willner A, Düsterer S, Schlarb H, Feldhaus J, Limpert J, Rossbach J, Tünnermann A. High average and peak power few-cycle laser pulses delivered by fiber pumped OPCPA system. Opt Express 2010; 18:12719-12726. [PMID: 20588400 DOI: 10.1364/oe.18.012719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We report on a high power optical parametric amplifier delivering 8 fs pulses with 6 GW peak power. The system is pumped by a fiber amplifier and operated at 96 kHz repetition rate. The average output power is as high as 6.7 W, which is the highest average power few-cycle pulse laser reported so far. When stabilizing the seed oscillator, the system delivered carrier-envelop phase stable laser pulses. Furthermore, high harmonic generation up to the 33(th) order (21.8 nm) is demonstrated in a Krypton gas jet. In addition, the scalability of the presented laser system is discussed.
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Affiliation(s)
- J Rothhardt
- Friedrich-Schiller-University Jena, Institute of Applied Physics, Albert-Einstein-Str 15, 07745 Jena, Germany.
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20
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Vinko SM, Zastrau U, Mazevet S, Andreasson J, Bajt S, Burian T, Chalupsky J, Chapman HN, Cihelka J, Doria D, Döppner T, Düsterer S, Dzelzainis T, Fäustlin RR, Fortmann C, Förster E, Galtier E, Glenzer SH, Göde S, Gregori G, Hajdu J, Hajkova V, Heimann PA, Irsig R, Juha L, Jurek M, Krzywinski J, Laarmann T, Lee HJ, Lee RW, Li B, Meiwes-Broer KH, Mithen JP, Nagler B, Nelson AJ, Przystawik A, Redmer R, Riley D, Rosmej F, Sobierajski R, Tavella F, Thiele R, Tiggesbäumker J, Toleikis S, Tschentscher T, Vysin L, Whitcher TJ, White S, Wark JS. Electronic structure of an XUV photogenerated solid-density aluminum plasma. Phys Rev Lett 2010; 104:225001. [PMID: 20867176 DOI: 10.1103/physrevlett.104.225001] [Citation(s) in RCA: 4] [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: 04/15/2010] [Indexed: 05/29/2023]
Abstract
By use of high intensity XUV radiation from the FLASH free-electron laser at DESY, we have created highly excited exotic states of matter in solid-density aluminum samples. The XUV intensity is sufficiently high to excite an inner-shell electron from a large fraction of the atoms in the focal region. We show that soft-x-ray emission spectroscopy measurements reveal the electronic temperature and density of this highly excited system immediately after the excitation pulse, with detailed calculations of the electronic structure, based on finite-temperature density functional theory, in good agreement with the experimental results.
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Affiliation(s)
- S M Vinko
- Department of Physics, Clarendon Laboratory, University of Oxford, Parks Road, Oxford, OX1 3PU, United Kingdom.
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21
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Fäustlin RR, Bornath T, Döppner T, Düsterer S, Förster E, Fortmann C, Glenzer SH, Göde S, Gregori G, Irsig R, Laarmann T, Lee HJ, Li B, Meiwes-Broer KH, Mithen J, Nagler B, Przystawik A, Redlin H, Redmer R, Reinholz H, Röpke G, Tavella F, Thiele R, Tiggesbäumker J, Toleikis S, Uschmann I, Vinko SM, Whitcher T, Zastrau U, Ziaja B, Tschentscher T. Observation of ultrafast nonequilibrium collective dynamics in warm dense hydrogen. Phys Rev Lett 2010; 104:125002. [PMID: 20366540 DOI: 10.1103/physrevlett.104.125002] [Citation(s) in RCA: 10] [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: 10/29/2009] [Indexed: 05/29/2023]
Abstract
We investigate ultrafast (fs) electron dynamics in a liquid hydrogen sample, isochorically and volumetrically heated to a moderately coupled plasma state. Thomson scattering measurements using 91.8 eV photons from the free-electron laser in Hamburg (FLASH at DESY) show that the hydrogen plasma has been driven to a nonthermal state with an electron temperature of 13 eV and an ion temperature below 0.1 eV, while the free-electron density is 2.8x10{20} cm{-3}. For dense plasmas, our experimental data strongly support a nonequilibrium kinetics model that uses impact ionization cross sections based on classical free-electron collisions.
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22
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Tavella F, Willner A, Rothhardt J, Hädrich S, Seise E, Düsterer S, Tschentscher T, Schlarb H, Feldhaus J, Limpert J, Tünnermann A, Rossbach J. Fiber-amplifier pumped high average power few-cycle pulse non-collinear OPCPA. Opt Express 2010; 18:4689-4694. [PMID: 20389481 DOI: 10.1364/oe.18.004689] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
We report on the performance of a 60 kHz repetition rate sub-10 fs, optical parametric chirped pulse amplifier system with 2 W average power and 3 GW peak power. This is to our knowledge the highest average power sub-10 fs kHz-amplifier system reported to date. The amplifier is conceived for applications at free electron laser facilities and is designed such to be scalable in energy and repetition rate.
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Affiliation(s)
- F Tavella
- Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22607 Hamburg, Germany.
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23
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Schmid K, Veisz L, Tavella F, Benavides S, Tautz R, Herrmann D, Buck A, Hidding B, Marcinkevicius A, Schramm U, Geissler M, Meyer-Ter-Vehn J, Habs D, Krausz F. Few-cycle laser-driven electron acceleration. Phys Rev Lett 2009; 102:124801. [PMID: 19392288 DOI: 10.1103/physrevlett.102.124801] [Citation(s) in RCA: 9] [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] [Received: 09/26/2008] [Indexed: 05/27/2023]
Abstract
We report on an electron accelerator based on few-cycle (8 fs full width at half maximum) laser pulses, with only 40 mJ energy per pulse, which constitutes a previously unexplored parameter range in laser-driven electron acceleration. The produced electron spectra are monoenergetic in the tens-of-MeV range and virtually free of low-energy electrons with thermal spectrum. The electron beam has a typical divergence of 5-10 mrad. The accelerator is routinely operated at 10 Hz and constitutes a promising source for several applications. Scalability of the few-cycle driver in repetition rate and energy implies that the present work also represents a step towards user friendly laser-based accelerators.
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Affiliation(s)
- K Schmid
- Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Strasse 1, 85748 Garching, Germany.
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24
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Orsi GB, Marrone R, Ferraro F, Tavella F, Colosi A. [Low colonization with MRSA among health-care workers in an Italian hospital]. Ann Ig 2008; 20:503-508. [PMID: 19069256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
The Authors carried out a study on MRSA colonization rate among health-care workers (HCW) in a large roman hospital. Samples were obtained from staff members at the beginning of each work shift. Two-hundred HCW were included (78 physicians and 122 nurses), mean age 36.6 +/- 10.9 years. We identified 38 (19.0%) S. aureus carriers, prevalently nurses (21.3%) vs. physicians (15.4%). Results showed a RR 2,7; IC95% 1.47-4.86; p < 0.01 among men vs. women. Overall three (1.5%) MRSA strains were isolated among HCW (two nurses and one physician). None of them was a CA-MRSA. The study suggests that HCW act principally as cross transmission vectors and not as main sources of MRSA.
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Affiliation(s)
- G B Orsi
- Dipartimento di Scienze di Sanit& Pubblica G. Sanarelli, Sapienza Università di Roma.
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25
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Carella E, Gaiero G, Tavella F, Tessore GP, Salomone P. [Changes in pathogenic coli in successive episodes]. Minerva Pediatr 1967; 19:759-60. [PMID: 4881609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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26
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Tavella F, Salomone P. [Corticoid treatment and cataract. Possible relationships]. Minerva Pediatr 1967; 19:761-2. [PMID: 5613925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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27
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Salomone P, Tavella F, Ferro P, Tessore GP. [Meningitis caused by "Pseudomonas aeruginosa" in the newborn infant. 3. Cases: treatment with Colimycin]. Minerva Pediatr 1967; 19:754-9. [PMID: 4972875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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28
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De Toni E, Borrone C, Cordone G, Gandullia E, Tavella F, Pelizza A, Verde Baldaro J. [Follow-up of premature infants hospitalized in Pediatric Clinic center of Genoa in the years 1953-1958]. Minerva Pediatr 1965; 17:1335-9. [PMID: 5852213] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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29
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Tavella F, Tessore G, Carella E, Salomone P. [Alimentation and growth of the premature infant in the first months of life. Preliminary note]. Minerva Pediatr 1965; 17:1301-2. [PMID: 5836305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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