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We demonstrate a compact technique to compress electron pulses to attosecond length, while keeping the energy spread reasonably small. The technique is based on Dielectric Laser Acceleration (DLA) in nanophotonic silicon structures. Unlike…

Accelerator Physics · Physics 2021-02-17 Uwe Niedermayer , Dylan S. Black , Kenneth J. Leedle , Yu Miao , Robert L. Byer , Olav Solgaard

We describe and discuss solutions for an innovating sub-relativistic electron source, based on pulsed DC gun, including linear (1D) Field Emitter Array (FEA) associated immediately with Laser Dielectric Accelerator (DLA) stage. That setup…

Accelerator Physics · Physics 2017-12-06 Jean-Luc Babigeon

Laser-driven grating type DLA (Dielectric Laser Accelerator) structures have been shown to produce accelerating gradients on the order of GeV/m. In simple $\beta$-matched grating structures due to the nature of the laser induced…

Accelerator Physics · Physics 2018-12-26 Frank Mayet , Ralph Assmann , Ulrich Dorda , Willi Kuropka

We propose a photon-recycling dielectric laser accelerator (DLA) system based on silicon photonic device. Our DLA system employs guided electromagnetic waves as a primary energy source, modulated to inject into the electron-light…

Optics · Physics 2025-01-10 Changying Li , Li Zhang , Dingguo Zheng , Xiaoping Liu , Yiming Pan

Dielectric laser acceleration of electrons close to a fused-silica grating has recently been observed (Peralta et al., Nature 503, 91 (2013); Breuer, Hommelhoff, PRL 111, 134803 (2013)). Here we present the theoretical description of the…

Accelerator Physics · Physics 2015-06-22 John Breuer , Joshua McNeur , Peter Hommelhoff

In this paper, we propose a novel design of dielectric laser-driven accelerator (DLA) utilizing evanescent electric field of racetrack ring resonator structures. Driven by laser light with the correctly designed optical phase window,…

In this paper we discuss the possibility to generate and accelerate proton nanobeams in fully dielectric laser-driven accelerators (p-DLAs). High gradient on-chip optical-power dielectric laser accelerators (DLAs) could represent one of the…

A comparative analysis of two types of dielectric laser accelerators (DLA) based on periodic (grating) and flat dielectric structures to accelerate electrons in the energy range from 300 keV to 3 GeV is presented. The main attention is paid…

Accelerator Physics · Physics 2024-10-01 G. V. Sotnikov , A. V. Vasiliev , I. V. Beznosenko , S. M. Kovalov , A. I. Povrozin , O. O. Svystunov

Limited by the difficulty in acceleration synchronization, it has been a long-term challenge for on-chip dielectric laser-based accelerators (DLA) to bridge the gap between non-relativistic and relativistic regimes. Here, we propose a DLA…

Optics · Physics 2022-02-02 Lu Wang , Uwe Niedermayer , Jingui Ma , Weihao Liu , Dongfang Zhang , Liejia Qian

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…

Accelerator Physics · Physics 2020-01-29 Norbert Schönenberger , Anna Mittelbach , Peyman Yousefi , Uwe Niedermayer , Peter Hommelhoff

Dielectric laser acceleration (DLA) represents a promising approach to building miniature particle accelerators on a chip. However, similar to conventional RF accelerators, an automatic and reconfigurable control mechanism is needed to…

Optics · Physics 2019-06-19 Tyler W. Hughes , R. Joel England , Shanhui Fan

Dielectric laser acceleration (DLA) is one of the advanced concepts for more compact accelerators. DLA gratings have apertures and period lengths within the range of optical wavelengths. Phase stability and wakefield effects are thus…

Accelerator Physics · Physics 2020-12-30 Thilo Egenolf , Uwe Niedermayer

Over the last years, the generation and acceleration of ultra-short, high quality electron beams has attracted more and more interest in accelerator science. Electron bunches with these properties are necessary to operate and test novel…

We present the design of a high repetition rate MeV energy ultrafast electron diffraction instrument based on a DC photoelectron gun and an SRF linac with multiple independently controlled accelerating and bunching cavities. The design is…

Accelerator Physics · Physics 2022-10-05 Adam Bartnik , Colwyn Gulliford , Georg H. Hoffstaetter , Jared Maxson

Dielectric Assist Accelerating (DAA) structures based on ultralow-loss ceramic are being studied as an alternative to conventional disk-loaded copper cavities. This accelerating structure consists of dielectric disks with irises arranged…

External injection of electron bunches longer than the plasma wavelength in a laser wakefield accelerator can lead to the generation of femtosecond ultrarelativistic bunches with a couple of percent energy spread. Extensive study has been…

Plasma Physics · Physics 2009-07-02 M. J. H. Luttikhof , A. G. Khachatryan , F. A. van Goor , K. -J. Boller

Ultrafast pump-probe experiments open the possibility to track fundamental material behaviour like changes in its electronic configuration in real time. To date, most of these experiments are performed using an electron or a high-energy…

We discuss recent developments and challenges of beam dynamics in Dielectric Laser Acceleration (DLA), for both high and low energy electron beams. Starting from ultra-low emittance nanotip sources the paper follows the beam path of a…

Accelerator Physics · Physics 2022-05-18 U. Niedermayer , K. Leedle , P. Musumeci , S. A. Schmid

The present numerical investigation of a Plasma Wakefield Acceleration scenario in the weakly non linear regime with external injection is motivated by the upcoming campaigns at the SPARC\_LAB test facility where the final goal is to…

Direct laser acceleration (DLA) of electrons in a plasma of near critical electron density (NCD) and associated synchrotron-like radiation are discussed for moderate relativistic laser intensity (the normalized laser amplitude $a_0$ $\leq$…