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20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

20 mJ, 1 ps Yb:YAG Thin-disk Regenerative Amplifier

Published on: July 12, 2017

A novel electron mirror pulse compressor.

M Mankos¹, K Shadman¹, B J Siwick²

¹Electron Optica Inc., 1000 Elwell Court #110, Palo Alto, CA 94303, USA.

Ultramicroscopy

|May 17, 2017

Summary

This summary is machine-generated.

A novel electron mirror pulse compressor enhances temporal resolution in electron microscopy and diffraction. This advancement allows for detailed observation of ultrafast reactions in materials science and biology.

Keywords:

Aberration correction Dynamic transmission electron microscopy Electron mirror Electron optics Magnetic beam separator Pulse compressor Ultrafast electron diffraction

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Direct Imaging of Laser-driven Ultrafast Molecular Rotation

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Published on: February 4, 2017

Area of Science:

Electron optics
Ultrafast science
Materials characterization

Background:

Dynamic/ultrafast transmission electron microscopes (UTEMs) and ultrafast electron diffraction (UED) cameras require improved temporal resolution to study fast reactions.
Current limitations hinder the detailed observation of reaction dynamics in solid-state physics, chemistry, and biology.

Purpose of the Study:

To develop an electron mirror-based pulse compressor for enhancing the temporal resolution of UTEMs and UED cameras.
To enable higher-fidelity studies of ultrafast processes in various scientific disciplines.

Main Methods:

A design combining mirror optics and a magnetic beam separator to reverse electron trajectories and compress pulses.
Integration of simultaneous correction for spherical and chromatic aberrations of the objective lens.
Development of a system adaptable to existing UTEMs and UED cameras.

Main Results:

The pulse compressor achieves improved temporal resolution, crucial for dynamic studies.
Simultaneous correction of aberrations enhances spatial resolution, enabling high-resolution probing.
The system effectively manages electron energy spread caused by space charge effects.

Conclusions:

The electron mirror pulse compressor significantly advances the capabilities of UTEMs and UED.
This technology facilitates the study of structure, composition, and bonding in new materials at ultrafast timescales.
It broadens the scope of research in solid-state physics, chemistry, and biology by resolving rapid reaction dynamics.