Continuous 40 GW/cm$^2$ laser intensity in a near-concentric optical cavity
Optics
2017-07-07 v3
Abstract
Manipulating free-space electron wave functions with laser fields can bring about new electron-optical elements for transmission electron microscopy. In particular, a Zernike phase plate would enable high-contrast imaging of soft matter, leading to new opportunities in structural biology and materials science. A Zernike plate can be implemented using a tight, intense CW laser focus that shifts the phase of the electron wave by the ponderomotive potential. Here, we use a near-concentric cavity to focus 7.5 kW of circulating laser power at 1064 nm into a 7 m waist, setting a record for CW laser intensity and establishing a pathway to ponderomotive phase contrast TEM.
Keywords
Cite
@article{arxiv.1610.08493,
title = {Continuous 40 GW/cm$^2$ laser intensity in a near-concentric optical cavity},
author = {Osip Schwartz and Jeremy J. Axelrod and Philipp Haslinger and Colin Ophus and Robert M. Glaeser and Holger Müller},
journal= {arXiv preprint arXiv:1610.08493},
year = {2017}
}