High brightness ultrafast Transmission Electron Microscope based on a laser-driven cold-field emission source: principle and applications
arXiv:1911.11564 · doi:10.1080/23746149.2019.1660214
Abstract
We report on the development of an ultrafast Transmission Electron Microscope based on a laser-driven cold-field emission source. We first describe the instrument before reporting on numerical simulations of the laser-driven electron emission. These simulations predict the temporal and spectral properties of the femtosecond electron pulses generated in our ultrafast electron source. We then discuss the effects that contribute to the spatial, temporal and spectral broadening of these electron pulses during their propagation from the electron source to the sample and finally to the detectors of the electron microscope. The spectro-temporal properties are then characterized in an electron/photon cross-correlation experiment based on the detection of electron energy gains. We finally illustrate the potential of this instrument for ultrafast electron holography and ultrafast electron diffraction.
References in corpus (15)
- Optical excitations in electron microscopy
- A Femtosecond Nanometer Free Electron Source
- Ultrafast transmission electron microscopy using a laser-driven field emitter: femtosecond resolution with a high coherence electron beam
- Attosecond Electron Pulse Trains and Quantum State Reconstruction in Ultrafast Transmission Electron Microscopy
- A spatially and temporally localized sub-laser-cycle electron source
- From attosecond to zeptosecond coherent control of free-electron wave functions using semi-infinite light fields
- Ramsey-type phase control of free electron beams
- Highly coherent electron beam from a laser-triggered tungsten needle tip
- Mechanism of Laser-induced Field Emission
- meV resolution in laser-assisted energy-filtered transmission electron microscopy
- A tip-based source of femtosecond electron pulses at 30keV
- Laser-induced Field Emission from Tungsten Tip: Optical Control of Emission Sites and Emission Process
- Nanoscale diffractive probing of strain dynamics in ultrafast transmission electron microscopy
- pyGDM -- A python toolkit for full-field electro-dynamical simulations and evolutionary optimization of nanostructures
- Temporal and spectral disentanglement of laser-driven electron tunneling emission from a solid
Cited by in corpus (5)
- Comments on the continuing widespread and unnecessary use of a defective emission equation in field emission related literature
- Time-Resolved Cathodoluminescence in an Ultrafast Transmission Electron Microscope
- Tunable ultrafast thermionic emission from femtosecond-laser hot spot on a metal surface: role of laser polarization and angle of incidence
- Beam Dynamics in Dielectric Laser Acceleration
- High Gradient Silicon Carbide Immersion Lens Ultrafast Electron Sources