DOI: 10.1063/1.4867185. Tip-based source of femtosecond electron pulses at 30 keV

Tip-based source of femtosecond electron pulses at 30 keV

10.1063/1.4867185

Crossref journal-article

AIP Publishing

Journal of Applied Physics (317)

Abstract

We present a nano-scale photoelectron source, optimized for ultrashort pulse durations and well-suited for time-resolved diffraction and advanced laser acceleration experiments. A tungsten tip of several-ten-nanometers diameter mounted in a suppressor-extractor electrode configuration allows the generation of 30 keV electron pulses with an estimated pulse duration of 9 fs (standard deviation; 21 fs full width at half maximum) at the gun exit. We infer the pulse duration from particle tracking simulations, which are in excellent agreement with experimental measurements of the electron-optical properties of the source in the spatial domain. We also demonstrate femtosecond-laser triggered operation of the apparatus. The temporal broadening of the pulse upon propagation to a diffraction sample can be greatly reduced by collimating the beam. Besides the short electron pulse duration, a tip-based source is expected to feature a large transverse coherence and a nanometric emittance.

Bibliography

Hoffrogge, J., Paul Stein, J., KrÃ¼ger, M., FÃ¶rster, M., Hammer, J., Ehberger, D., Baum, P., & Hommelhoff, P. (2014). Tip-based source of femtosecond electron pulses at 30âkeV. Journal of Applied Physics, 115(9).

Authors 8

Johannes Hoffrogge (first)
Jan Paul Stein (additional)
Michael Krüger (additional)
Michael Förster (additional)
Jakob Hammer (additional)
Dominik Ehberger (additional)
Peter Baum (additional)
Peter Hommelhoff (additional)

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Dates

Type	When
Created	11 years, 6 months ago (March 5, 2014, 8:31 p.m.)
Deposited	2 years, 2 months ago (July 3, 2023, 9:31 p.m.)
Indexed	1 month, 1 week ago (July 30, 2025, 7:02 a.m.)
Issued	11 years, 6 months ago (March 5, 2014)
Published	11 years, 6 months ago (March 5, 2014)
Published Online	11 years, 6 months ago (March 5, 2014)
Published Print	11 years, 6 months ago (March 7, 2014)

Funders 0

None

BibTeX

@article{Hoffrogge_2014, title={Tip-based source of femtosecond electron pulses at 30 keV}, volume={115}, ISSN={1089-7550}, url={http://dx.doi.org/10.1063/1.4867185}, DOI={10.1063/1.4867185}, number={9}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Hoffrogge, Johannes and Paul Stein, Jan and Krüger, Michael and Förster, Michael and Hammer, Jakob and Ehberger, Dominik and Baum, Peter and Hommelhoff, Peter}, year={2014}, month=mar }

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