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Ouatu I, Spiers BT, Aboushelbaya R, Feng Q, von der Leyen MW, Paddock RW, Timmis R, Ticos C, Krushelnick KM, Norreys PA. Ionization states for the multipetawatt laser-QED regime. Phys Rev E 2022; 106:015205. [PMID: 35974572 DOI: 10.1103/physreve.106.015205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 06/30/2022] [Indexed: 06/15/2023]
Abstract
A paradigm shift in the physics of laser-plasma interactions is approaching with the commissioning of multipetawatt laser facilities worldwide. Radiation reaction processes will result in the onset of electron-positron pair cascades and, with that, the absorption and partitioning of the incident laser energy, as well as the energy transport throughout the irradiated targets. To accurately quantify these effects, one must know the focused intensity on target in situ. In this work, a way of measuring the focused intensity on target is proposed based upon the ionization of xenon gas at low ambient pressure. The field ionization rates from two works [Phys. Rev. A 59, 569 (1999)1050-294710.1103/PhysRevA.59.569 and Phys. Rev. A 98, 043407 (2018)2469-992610.1103/PhysRevA.98.043407], where the latter rate has been derived using quantum mechanics, have been implemented in the particle-in-cell code SMILEI [Comput. Phys. Commun. 222, 351 (2018)0010-465510.1016/j.cpc.2017.09.024]. A series of one- and two-dimensional simulations are compared and shown to reproduce the charge states without presenting visible differences when increasing the simulation dimensionality. They provide a way to accurately verify the intensity on target using in situ measurements.
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Affiliation(s)
- I Ouatu
- Department of Physics, Atomic and Laser Physics sub-Department, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - B T Spiers
- Department of Physics, Atomic and Laser Physics sub-Department, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
- Central Laser Facility, UKRI-STFC Rutherford Appleton Laboratory, Didcot, Oxon OX11 0QX, United Kingdom
| | - R Aboushelbaya
- Department of Physics, Atomic and Laser Physics sub-Department, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - Q Feng
- Department of Physics, Atomic and Laser Physics sub-Department, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - M W von der Leyen
- Department of Physics, Atomic and Laser Physics sub-Department, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - R W Paddock
- Department of Physics, Atomic and Laser Physics sub-Department, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - R Timmis
- Department of Physics, Atomic and Laser Physics sub-Department, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
| | - C Ticos
- Extreme Light Infrastructure-Nuclear Physics (ELI-NP), Horia Hulubei National Institute for Physics and Nuclear Engineering, Măgurele 077125, Romania
| | - K M Krushelnick
- Center for Ultra-Fast Optics, University of Michigan, Ann Arbor, Michigan, USA
| | - P A Norreys
- Department of Physics, Atomic and Laser Physics sub-Department, Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
- Central Laser Facility, UKRI-STFC Rutherford Appleton Laboratory, Didcot, Oxon OX11 0QX, United Kingdom
- John Adams Institute, Denys Wilkinson Building, Oxford OX1 3RH, United Kingdom
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Mackenroth F, Holkundkar AR. Determining the duration of an ultra-intense laser pulse directly in its focus. Sci Rep 2019; 9:19607. [PMID: 31863021 PMCID: PMC6925305 DOI: 10.1038/s41598-019-55949-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Accepted: 10/22/2019] [Indexed: 11/08/2022] Open
Abstract
Ultra-intense lasers facilitate studies of matter and particle dynamics at unprecedented electromagnetic field strengths. In order to quantify these studies, precise knowledge of the laser's spatiotemporal shape is required. Due to material damage, however, conventional metrology devices are inapplicable at highest intensities, limiting laser metrology there to indirect schemes at attenuated intensities. Direct metrology, capable of benchmarking these methods, thus far only provides static properties of short-pulsed lasers with no scheme suggested to extract dynamical laser properties. Most notably, this leaves an ultra-intense laser pulse's duration in its focus unknown at full intensity. Here we demonstrate how the electromagnetic radiation pattern emitted by an electron bunch with a temporal energy chirp colliding with the laser pulse depends on the laser's pulse duration. This could eventually facilitate to determine the pulse's temporal duration directly in its focus at full intensity, in an example case to an accuracy of order 10% for fs-pulses, indicating the possibility of an order-of magnitude estimation of this previously inaccessible parameter.
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Affiliation(s)
- Felix Mackenroth
- Max Planck Institute for the Physics of Complex Systems, Dresden, Germany.
| | - Amol R Holkundkar
- Max Planck Institute for the Physics of Complex Systems, Dresden, Germany
- Department of Physics, Birla Institute of Technology and Science, Pilani, Rajasthan, 333031, India
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He CZ, Longman A, Pérez-Hernández JA, de Marco M, Salgado C, Zeraouli G, Gatti G, Roso L, Fedosejevs R, Hill WT. Towards an in situ, full-power gauge of the focal-volume intensity of petawatt-class lasers. OPTICS EXPRESS 2019; 27:30020-30030. [PMID: 31684256 DOI: 10.1364/oe.27.030020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Accepted: 09/13/2019] [Indexed: 06/10/2023]
Abstract
About 50 years ago, Sarachick and Schappert [Phys. Rev. D. 1, 2738-2752 (1970)] showed that relativistic Thomson scattering leads to wavelength shifts that are proportional to the laser intensity. About 28 years later, Chen et al. [Nature 396, 653-655 (1998)] used these shifts to estimate their laser intensity near 1018 W/cm 2. More recently, there have been several theoretical studies aimed at exploiting nonlinear Thomson scattering as a tool for direct measurement of intensities well into the relativistic regime. We present the first quantitative study of this approach for intensities between 1018 and 1019 W/cm 2. We show that the spectral shifts are in reasonable agreement with estimates of the peak intensity extracted from images of the focal area obtained at reduced power. Finally, we discuss the viability of the approach, its range of usefulness and how it might be extended to gauge intensities well in excess of 1019 W/cm 2.
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Haffa D, Bin J, Speicher M, Allinger K, Hartmann J, Kreuzer C, Ridente E, Ostermayr TM, Schreiber J. Temporally Resolved Intensity Contouring (TRIC) for characterization of the absolute spatio-temporal intensity distribution of a relativistic, femtosecond laser pulse. Sci Rep 2019; 9:7697. [PMID: 31118430 PMCID: PMC6531490 DOI: 10.1038/s41598-019-42683-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2018] [Accepted: 04/05/2019] [Indexed: 12/03/2022] Open
Abstract
Today’s high-power laser systems are capable of reaching photon intensities up to 1022 W cm−2, generating plasmas when interacting with material. The high intensity and ultrashort laser pulse duration (fs) make direct observation of plasma dynamics a challenging task. In the field of laser-plasma physics and especially for the acceleration of ions, the spatio-temporal intensity distribution is one of the most critical aspects. We describe a novel method based on a single-shot (i.e. single laser pulse) chirped probing scheme, taking nine sequential frames at frame rates up to THz. This technique, to which we refer as temporally resolved intensity contouring (TRIC) enables single-shot measurement of laser-plasma dynamics. Using TRIC, we demonstrate the reconstruction of the complete spatio-temporal intensity distribution of a high-power laser pulse in the focal plane at full pulse energy with sub-picosecond resolution.
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Affiliation(s)
- Daniel Haffa
- Lehrstuhl für Medizinphysik, Fakultät für Physik, Ludwig-Maximillians-Universität München, 85748, Garching b. München, Germany.
| | - Jianhui Bin
- Lehrstuhl für Medizinphysik, Fakultät für Physik, Ludwig-Maximillians-Universität München, 85748, Garching b. München, Germany. .,Accelerator Technology and Applied Physics Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA.
| | - Martin Speicher
- Lehrstuhl für Medizinphysik, Fakultät für Physik, Ludwig-Maximillians-Universität München, 85748, Garching b. München, Germany.
| | - Klaus Allinger
- Lehrstuhl für Medizinphysik, Fakultät für Physik, Ludwig-Maximillians-Universität München, 85748, Garching b. München, Germany
| | - Jens Hartmann
- Lehrstuhl für Medizinphysik, Fakultät für Physik, Ludwig-Maximillians-Universität München, 85748, Garching b. München, Germany
| | - Christian Kreuzer
- Lehrstuhl für Medizinphysik, Fakultät für Physik, Ludwig-Maximillians-Universität München, 85748, Garching b. München, Germany
| | - Enrico Ridente
- Lehrstuhl für Medizinphysik, Fakultät für Physik, Ludwig-Maximillians-Universität München, 85748, Garching b. München, Germany.,Max-Planck-Institut für Quantenoptik, 85748, Garching b. München, Germany
| | - Tobias M Ostermayr
- Lehrstuhl für Medizinphysik, Fakultät für Physik, Ludwig-Maximillians-Universität München, 85748, Garching b. München, Germany.,Max-Planck-Institut für Quantenoptik, 85748, Garching b. München, Germany.,Accelerator Technology and Applied Physics Division, Lawrence Berkeley National Laboratory, Berkeley, CA, 94720, USA
| | - Jörg Schreiber
- Lehrstuhl für Medizinphysik, Fakultät für Physik, Ludwig-Maximillians-Universität München, 85748, Garching b. München, Germany
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Paredes A, Novoa D, Tommasini D. Measuring extreme vacuum pressure with ultraintense lasers. PHYSICAL REVIEW LETTERS 2012; 109:253903. [PMID: 23368467 DOI: 10.1103/physrevlett.109.253903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/08/2012] [Revised: 10/04/2012] [Indexed: 06/01/2023]
Abstract
We show that extreme vacuum pressures can be measured with current technology by detecting the photons produced by the relativistic Thomson scattering of ultraintense laser light by the electrons of the medium. We compute the amount of radiation scattered at different frequencies and angles when a Gaussian laser pulse crosses a vacuum tube and design strategies for the efficient measurement of pressure. In particular, we show that a single day experiment at a high repetition rate petawatt laser facility such as Vega, that will be operating in 2014 in Salamanca, will be sensitive, in principle, to pressures p as low as 10(-16)Pa, and will be able to provide highly reliable measurements for p >/~ 10(-14)Pa.
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Affiliation(s)
- Angel Paredes
- Departamento de Física Aplicada, Universidade de Vigo, As Lagoas, Ourense ES-32004, Spain
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