Dielectric laser acceleration and focusing using short-pulse lasers with an arbitrary laser phase distribution

Wootton, Kent; Cesar, D.; Lee, C.; Makasyuk, Igor; Maxson, Jared; Musumeci, P.; England, R. J.

doi:10.1063/1.4975868

Cited by 5 publications

(4 citation statements)

References 12 publications

(19 reference statements)

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“…5b), as expected. For both cases, the focusing performance is significantly beyond what is offered by conventional electrostatic37 and proposed dielectric focusing structures38 and is comparable to those of plasma lenses39. Peak focusing gradients of >2 kT/m were calculated based on ~2×6 µJ of coupled THz energy.…”

Section: Electric Mode: Acceleration Compression and Focusingmentioning

confidence: 93%

Segmented terahertz electron accelerator and manipulator (STEAM)

et al. 2018

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Acceleration and manipulation of electron bunches underlie most electron and X-ray devices used for ultrafast imaging and spectroscopy. New terahertz-driven concepts offer orders-of-magnitude improvements in field strengths, field gradients, laser synchronization and compactness relative to conventional radio-frequency devices, enabling shorter electron bunches and higher resolution with less infrastructure while maintaining high charge capacities (pC), repetition rates (kHz) and stability. We present a segmented terahertz electron accelerator and manipulator (STEAM) capable of performing multiple high-field operations on the 6D-phase-space of ultrashort electron bunches. With this single device, powered by few-micro-Joule, single-cycle, 0.3 THz pulses, we demonstrate record THz-acceleration of >30 keV, streaking with <10 fs resolution, focusing with >2 kT/m strength, compression to ~100 fs as well as real-time switching between these modes of operation. The STEAM device demonstrates the feasibility of THz-based electron accelerators, manipulators and diagnostic tools enabling science beyond current resolution frontiers with transformative impact.

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Section: Electric Mode: Acceleration Compression and Focusingmentioning

confidence: 93%

Segmented terahertz electron accelerator and manipulator (STEAM)

et al. 2018

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“…Quickly thereafter, various other functionalities have been realized based on this scheme of phase-synchronous interaction of nearfields generated in dielectric structures and fast electron pulses, both at relativistic and nonrelativistic energies. Examples include the deflection, focusing and streaking of an electron beam [23][24][25][26]. With all these individual building blocks available, and with the demonstration of two concatenated structures [24], the concept of a particle accelerator on a photonic chip is now within reach.…”

mentioning

confidence: 99%

Generation and Characterization of Attosecond Microbunched Electron Pulse Trains via Dielectric Laser Acceleration

et al. 2019

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Dielectric laser acceleration is a versatile scheme to accelerate and control electrons with the help of femtosecond laser pulses in nanophotonic structures. We demonstrate here the generation of a train of electron pulses with individual pulse durations as short as 270±80 attoseconds(FWHM), measured in an indirect fashion, based on two subsequent dielectric laser interaction regions connected by a free-space electron drift section, all on a single photonic chip. In the first interaction region (the modulator), an energy modulation is imprinted on the electron pulse. During free propagation, this energy modulation evolves into a charge density modulation, which we probe in the second interaction region (the analyzer). These results will lead to new ways of probing ultrafast dynamics in matter and are essential for future laser-based particle accelerators on a photonic chip.

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“…β m was chosen to be close to 1 (→ 50 MeV). As the figure of merit the equivalent magnetic focusing gradient as described in [5] was used. It is defined by…”

Section: Simulationsmentioning

confidence: 99%

Using short drive laser pulses to achieve net focusing forces in tailored dual grating dielectric structures

Mayet

Assmann

Dorda

et al. 2018

Nuclear Instruments and Methods in Physics Research Section A:

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Laser-driven grating type DLA (Dielectric Laser Accelerator) structures have been shown to produce accelerating gradients on the order of GeV/m. In simple β-matched grating structures due to the nature of the laser induced steady-state in-channel fields the per period forces on the particles are mostly in longitudinal direction. Even though strong transverse magnetic and electric fields are present, the net focusing effect over one period at maximum energy gain is negligible in the case of relativistic electrons. Stable acceleration of realistic electron beams in a DLA channel however requires the presence of significant net transverse forces. In this work we simulate and study the effect of using the transient temporal shape of short Gaussian drive laser pulses in order to achieve suitable field configurations for potentially stable acceleration of relativistic electrons in the horizontal plane. In order to achieve this, both the laser pulse and the grating geometry are optimized. Simulations conducted with the Particle-In-Cell code VSim 7.2 are shown for both the transient and steady state/long pulse case. Finally we investigate how the drive laser phase dependence of the focusing forces could affect a potential DLA-based focusing lattice.

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Dielectric laser acceleration and focusing using short-pulse lasers with an arbitrary laser phase distribution

Cited by 5 publications

References 12 publications

Segmented terahertz electron accelerator and manipulator (STEAM)

Segmented terahertz electron accelerator and manipulator (STEAM)

Generation and Characterization of Attosecond Microbunched Electron Pulse Trains via Dielectric Laser Acceleration

Using short drive laser pulses to achieve net focusing forces in tailored dual grating dielectric structures

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