eXawatt Center for Extreme Light Studies

High Power Laser Science and Engineering, Journal Year: 2023, Volume and Issue: 11

Published: Jan. 1, 2023

Abstract The eXawatt Center for Extreme Light Studies project aimed to create a large scientific infrastructure based on lasers with giant peak power. relies the significant progress achieved in last decade. planned will incorporate unique light source pulse power of 600 PW using optical parametric chirped amplification large-aperture KD 2 PO 4 , deuterated potassium dihydrogen phosphate crystals. interaction such laser radiation matter represents completely new fundamental physics. direct study space–time structure vacuums and other unknown phenomena at frontier high-energy physics superstrong fields be challenged. Expected applications include development compact particle accelerators, generation ultrashort pulses hard X-ray gamma material science enabling one probe samples unprecedented spatial temporal resolution, sources, etc. paper is translation from Russian [Kvantovaya Elektronika 53, 95 (2023)].

Language: Английский

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Reducing laser beam fluence and intensity fluctuations in symmetric and asymmetric compressors

High Power Laser Science and Engineering, Journal Year: 2023, Volume and Issue: 11

Published: Jan. 1, 2023

Abstract All space–time coupling effects arising in an asymmetric optical compressor consisting of two non-identical pairs diffraction gratings are described analytically. In each pair, the identical and parallel to other, whereas distance between gratings, groove density angle incidence different pairs. It is shown that asymmetry does not affect far-field fluence on-axis focal intensity. The main distinctive feature spatial noise lagging behind or overtaking pulse proportion transverse wave vector. This results a degraded contrast but reduces beam fluctuations at output. Exact expressions obtained for spectrum root mean square depends only on one parameter characterizing asymmetry. efficiency small-scale self-focusing suppression subsequent post-compression estimated.

Language: Английский

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400nm ultra-broadband gratings for near-single-cycle 100 Petawatt lasers

Nature Communications, Journal Year: 2023, Volume and Issue: 14(1)

Published: June 19, 2023

Compressing high-energy laser pulses to a single-cycle and realizing the "λ3 concept", where λ is wavelength of laser, will break current limitation super-scale projects contribute future 100-petawatt even Exawatt lasers. Here, we have realized ultra-broadband gold gratings, core optics in chirped pulse amplification, 750-1150 nm spectral range with > 90% -1 order diffraction efficiency for near stretching compression. The grating also compatible azimuthal angles from -15° 15°, making it possible design three-dimensional compressor. In developing manufacturing processes, crucial profile large base width sharp ridge carefully optimized controlled dramatically broaden high bandwidth 100-200 over 400 nm. This work has removed key obstacle achieving 100-PW lasers future.

Language: Английский

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Advances in laser-plasma interactions using intense vortex laser beams

Science China Physics Mechanics and Astronomy, Journal Year: 2024, Volume and Issue: 67(9)

Published: Aug. 6, 2024

Language: Английский

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Enhanced MVA of polarized proton beams via PW laser-driven plasma bubble

Matter and Radiation at Extremes, Journal Year: 2025, Volume and Issue: 10(3)

Published: April 4, 2025

The significance of laser-driven polarized beam acceleration has been increasingly recognized in recent years. We propose an efficient method for generating proton beams from a pre-polarized hydrogen halide gas jet, utilizing magnetic vortex enhanced by plasma bubble. When petawatt laser pulse passes through bubble-like ultra-nonlinear wave is formed. As portion the particles constituting this wave, background protons are swept field bubble and oscillate significantly along propagation axis. Some pre-accelerated trapped at rear side target. This intensified transverse expansion vortex, resulting energetic beams. spin determined their precession within electromagnetic field, which described using Thomas–Bargmann–Michel–Telegdi equation analytical models particle-in-cell simulations. Multidimensional simulations reveal that monoenergetic with energy hundreds MeV, charge pC, polarization tens percent can be produced powers several petawatts. Such have promise application colliders, where they utilized to investigate particle interactions explore properties matter under extreme conditions.

Language: Английский

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From linear to nonlinear Breit-Wheeler pair production in laser-solid interactions

Physical review. E, Journal Year: 2024, Volume and Issue: 109(3)

Published: March 8, 2024

During the ultraintense laser interaction with solids (overdense plasmas), competition between two possible quantum electrodynamics (QED) mechanisms responsible for e^{±} pair production, i.e., linear and nonlinear Breit-Wheeler (BW) processes, remains to be studied. Here, we have implemented BW process via a Monte Carlo algorithm into QED particle-in-cell (PIC) code yunic, enabling us self-consistently investigate both production in plasma environment. By series of two-dimensional QED-PIC simulations, transition from is observed increase intensities typical configuration linearly polarized solid targets. A critical normalized amplitude about a_{0}∼400-500 found under large range preplasma scale lengths, below which dominates over process. This work provides practicable technique model processes integrated simulations. Moreover, it calls more attention paid near future 10-PW-class laser-solid interactions.

Language: Английский

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Highly stable, flexible delivery of microjoule-level ultrafast pulses in vacuumized anti-resonant hollow-core fibers for active synchronization

Optics Letters, Journal Year: 2023, Volume and Issue: 48(7), P. 1838 - 1838

Published: March 6, 2023

We demonstrate the stable and flexible light delivery of multi-microjoule, sub-200-fs pulses over a ∼10-m-long vacuumized anti-resonant hollow-core fiber (AR-HCF), which was successfully used for high-performance pulse synchronization. Compared with train launched into AR-HCF, transmitted out exhibits excellent stabilities in power spectrum, pointing stability largely improved. The walk-off between fiber-delivery other free-space-propagation trains, an open loop, measured to be <6 fs root mean square (rms) 90 minutes, corresponding relative optical-path variation <2 × 10-7. This can further suppressed ∼2 rms simply by using active control highlighting great application potentials this AR-HCF setup large-scale laser accelerator facilities.

Language: Английский

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Efficient Generation of Axial Magnetic Field by Multiple Laser Beams with Twisted Pointing Directions

Physical Review Letters, Journal Year: 2023, Volume and Issue: 130(15)

Published: April 12, 2023

Strong laser-driven magnetic fields are crucial for high-energy-density physics and laboratory astrophysics research, but generation of axial multikilotesla remains a challenge. The difficulty comes from the inability conventional linearly polarized laser beam to induce required azimuthal current or, equivalently, angular momentum (AM). We show that several beams can overcome this difficulty. Our three-dimensional kinetic simulations demonstrate twist in their pointing directions enables them carry orbital AM transfer it plasma, thus generating hot electron population carrying needed sustain field. resulting field occupies volume is tens thousands cubic microns persists on picosecond timescale. mechanism be realized wide range intensities pulse durations. scheme well suited implementation using multikilojoule petawatt-class lasers, because, by design, they have multiple beamlets because requires only linear polarization.

Language: Английский

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Control systems and data management for high-power laser facilities

High Power Laser Science and Engineering, Journal Year: 2023, Volume and Issue: 11

Published: Jan. 1, 2023

Abstract The next generation of high-power lasers enables repetition experiments at orders magnitude higher frequency than what was possible using the prior generation. Facilities requiring human intervention between laser repetitions need to adapt in order keep pace with new technology. A distributed networked control system can enable laboratory-wide automation and feedback loops. These higher-repetition-rate will create enormous quantities data. consistent approach managing data increase accessibility, reduce repetitive data-software development mitigate poorly organized metadata. An opportunity arises share knowledge improvements infrastructure currently being undertaken. We compare platforms approaches state-of-the-art systems management facilities, we illustrate these topics case studies from our community.

Language: Английский

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All- and mixed-dielectric grating for Nd:glass-based high-energy pulse compression

High Power Laser Science and Engineering, Journal Year: 2023, Volume and Issue: 11

Published: Jan. 1, 2023

Abstract Maximizing the energy-loading performance of gratings is a universal theme in high-energy pulse compression. However, sporadic grating designs strongly restrict development high-power laser engineering. This study proposes an all- and mixed-dielectric design paradigm for Nd:glass-based compressors. The solution regions are classified according to line density. High diffraction efficiency solutions described more detail based on dispersion amount incident angle. Moreover, energy scaling factor 7.09 times larger than that National Ignition Facility’s Advanced Radiographic Capability (NIF-ARC) obtained by taking advantage low electric field intensity at transverse magnetic polarization small These results make pioneering contribution facilitate future 20–50-petawatt-class ultrafast systems.

Language: Английский

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