Multi-GeV Electron Bunches from an All-Optical Laser Wakefield Accelerator

Miao, Bo; Shrock, J. E.; Feder, Linus; Hollinger, R.; Morrison, John T.; Nedbailo, R.; Picksley, A.; Song, Huanyu; Wang, S.; Rocca, J. J.; Milchberg, H. M.

doi:10.1103/physrevx.12.031038

Cited by 34 publications

(12 citation statements)

References 49 publications

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“…In LWFA, plasma waves excited by an ultrashort laser pulse propagating through an under-dense plasma trap and accelerate electrons to relativistic velocities. For the past two decades, the LWFA community focused on optimizing the accelerated beam quality for higher particle energy ( 1 – 3 ), sharper energy spectrum ( 4 , 5 ), higher charge ( 6 , 7 ), and improved repeatability ( 8 ). Applications for LWFA electron beams ( 9 ) are now becoming a reality ( 10 ).…”

Section: Introductionmentioning

confidence: 99%

Undepleted direct laser acceleration

Cohen,

Meir,

Tangtartharakul

et al. 2024

Sci. Adv.

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Intense lasers enable generating high-energy particle beams in university-scale laboratories. With the direct laser acceleration (DLA) method, the leading part of the laser pulse ionizes the target material and forms a positively charged ion plasma channel into which electrons are injected and accelerated. The high energy conversion efficiency of DLA makes it ideal for generating large numbers of photonuclear reactions. In this work, we reveal that, for efficient DLA to prevail, a target material of sufficiently high atomic number is required to maintain the injection of ionization electrons at the peak intensity of the pulse when the DLA channel is already formed. We demonstrate experimentally and numerically that, when the atomic number is too low, the target is depleted of its ionization electrons prematurely. Applying this understanding to multi-petawatt laser experiments is expected to result in increased neutron yields, a perquisite for a wide range of research and applications.

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Section: Introductionmentioning

confidence: 99%

Undepleted direct laser acceleration

Cohen,

Meir,

Tangtartharakul

et al. 2024

Sci. Adv.

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“…The development of pulsed lasers with simultaneously high peak and average power are desired to support many applications in basic and applied science and industry. These include drivers of plasma-based extreme ultraviolet sources for lithography [1], gamma ray sources [2,3], and compact laser-based plasma acceleration [4], to name a few. Avoiding the inefficiency and heat removal limitations associated with flashlamp-pumped and indirectly-diode pumped systems, directly-diode-pumped lasers have been identified as the most promising route to high peak and average power laser drivers [5].…”

Section: Introductionmentioning

confidence: 99%

Development of high peak and average power Tm:YLF lasers

Hubka,

Tamer,

Kiani

et al. 2024

Solid State Lasers XXXIII: Technology and Devices

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We present experimental results that show how diode-pumped Tm:YLF can be used to develop the next generation of lasers with high peak and high average power. We demonstrate the production of broad bandwidth, λ ≈ 1.9 µm wavelength, high energy pulses with up to 1.6 J output energy and subsequent compression to sub-300 fs duration. This was achieved using a single 8-pass amplifier to boost stretched ~ 50 µJ pulses to the Joule-level. Furthermore, we show the average power capability of this material in a helium gas-cooled amplifier head, achieving a heat removal rate almost 10 times higher than the state-of-the-art, surpassing 20 W/cm 2 . These demonstrations illustrate the capabilities of directly diodepumped Tm:YLF to support TW to PW-class lasers at kW average power.

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“…High energy lasers operating at high average power are required for future inertial fusion energy drivers [1,2], next generation high volume EUV lithography [3,4], and driving compact plasma accelerators [5]. Although such lasers can deliver on-target peak powers in excess of 1 petawatt at Hz-level repetition rates [6], the material characteristics of the laser gain media currently employed in these systems often demand a single-pulse energy extraction scheme with a multi-stage pump source, substantially limiting scalability towards the higher energy storage densities and average powers necessary to transform high yield laboratory experiments into real-world applications.…”

Section: Introductionmentioning

confidence: 99%

High energy operation of a diode-pumped Tm:YLF laser

Tamer

Reagan²,

Batysta³

et al. 2023

High Power Lasers for Fusion Research VII

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We present experimental demonstrations of the energy density storage and extraction capabilities of Tm:YLF using a table-top diode-pumped system. Here, a Tm:YLF-based oscillator, producing mJ-class pulse energies within both short (nanosecond) and long (millisecond) duration pulses, seeds a single far-field multiplexed power amplifier. The amplifier produced pulse energies up to 21.7 J in 20 ns (>1 GW peak power) using a 4-pass configuration, and 108.3 J in a long duration pulse using a 6-pass configuration. Additionally, the system was reconfigured and operated in a burst mode, amplifying a 6.8 kHz few-ms duration burst of 36 pulses up to 3.6 kW average power. An optical-to-optical efficiency of 19% was achieved during the quasi-steady-state amplification, with an individual pulse fluence over an order of magnitude lower than the saturation fluence.

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Multi-GeV Electron Bunches from an All-Optical Laser Wakefield Accelerator

Cited by 34 publications

References 49 publications

Undepleted direct laser acceleration

Undepleted direct laser acceleration

Development of high peak and average power Tm:YLF lasers

High energy operation of a diode-pumped Tm:YLF laser

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