Welcome to the new version of CaltechAUTHORS. Login is currently restricted to library staff. If you notice any issues, please email coda@library.caltech.edu
Published September 1, 2008 | Cover Image
Journal Article Open

Femtosecond diffraction with chirped electron pulses

Abstract

Here, we report on the possible achievement, in ultrafast electron diffraction and imaging, of temporal resolution of tens of femtoseconds through the use of chirped electron packets in combination with energy filtering. Space–charge forces in multi-electron packets accelerate leading electrons and retard trailing ones, thus inducing correlations of momentum and time. By resolving the diffraction images with an energy analyzer, well-defined temporal slices of the long electron packet can be selected. Numerical simulations show that conventional electron sources are sufficient to reach the 30-fs domain of resolution without electron packet compression. They also reveal the influence of packet shape, electron density and photoemission bandwidth on the achievable time resolution.

Additional Information

© 2008 Elsevier B.V. Received 13 June 2008; accepted 15 July 2008. Available online 24 July 2008. This work was supported by the National Science Foundation and AFOSR in the Moore Center for Ultrafast Science and Technology at Caltech. We wish to thank Sang Tae Park for his helpful suggestions and the two reviewers for useful comments. Peter Baum acknowledges support, at present, from Professors E. Riedle and W. Zinth.

Attached Files

Cover Image - BAUcpl08.jpg

Files

small.png
Files (33.5 kB)
Name Size Download all
md5:1ca77353e0a481a9032d2b3d1890f1dc
2.7 kB Preview Download
md5:469701618b5df74c502ac1cedd0c0df6
12.4 kB Preview Download
md5:cf5708a50b350aa381bbddeb426ee5a6
18.3 kB Preview Download

Additional details

Created:
August 22, 2023
Modified:
October 17, 2023