Threedimensional Alternating-Phase Focusing for Dielectric-Laser Electron Accelerators

Abstract

The concept of dielectric-laser acceleration (DLA) provides the highest gradients among breakdown-limited (nonplasma) particle accelerators and thus the potential of miniaturization. The implementation of a fully scalable electron accelerator on a microchip by twodimensional alternating phase focusing (APF), which relies on homogeneous laser fields and external magnetic focusing in the third direction, was recently proposed. In this Letter, we generalize the APF for DLA scheme to 3D, such that stable beam transport and acceleration is attained without any external equipment, while the structures can still be fabricated by entirely twodimensional lithographic techniques. In the new scheme, we obtain signifcantly higher accelerating gradients at given incident laser field by additionally exploiting the new horizontal edge. This enables ultra-low injection energies of about 2.5 keV (beta = 0.1) and bulky high voltage equipment as used in previous DLA experiments can be omitted. DLAs have applications in ultrafast time-resolved electron microscopy and -diffraction. Our fndings are crucial for the miniaturization of the entire setup and pave the way towards integration of DLAs in optical fiber driven endoscopes, e.g., for medical purposes.

References in corpus (16)

• Ultrafast transmission electron microscopy using a laser-driven field emitter: femtosecond resolution with a high coherence electron beam
• Dielectric Laser Acceleration
• On-chip integrated laser-driven particle accelerator
• From attosecond to zeptosecond coherent control of free-electron wave functions using semi-infinite light fields
• Highly coherent electron beam from a laser-triggered tungsten needle tip
• Generation and Characterization of Attosecond Micro-Bunched Electron Pulse Trains via Dielectric Laser Acceleration
• Alternating Phase Focusing for Dielectric Laser Acceleration
• Nanoscale mapping of ultrafast magnetization dynamics with femtosecond Lorentz microscopy
• On-Chip Laser Power Delivery System for Dielectric Laser Accelerators
• Ultrafast scanning electron microscope applied for studying the interaction between free electrons and optical near-fields of periodic nanostructures
• Beam Dynamics Analysis of Dielectric Laser Acceleration using a Fast 6D Tracking Scheme
• Laser-Driven Electron Lensing in Silicon Microstructures
• Femtosecond laser-induced electron emission from nanodiamond-coated tungsten needle tips
• Optical design for increased interaction length in a high gradient dielectric laser accelerator
• Silicon dual pillar structure with a distributed Bragg reflector for dielectric laser accelerators: Design and fabrication
• Tracking with wakefields in dielectric laser acceleration grating structures

Cited by in corpus (8)

• Electron phase space control in photonic chip-based particle acceleration
• Quantum state heralding using photonic integrated circuits with free electrons
• Low Energy Spread Attosecond Bunching and Coherent Electron Acceleration in Dielectric Nanostructures
• Considerations for a TeV Collider Based On Dielectric Laser Accelerators
• Imaging the field inside nanophotonic devices
• Beam Dynamics in Dielectric Laser Acceleration
• Design Study of a Dielectric Laser Undulator
• Modeling of Advanced Accelerator Concepts