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Start Over Author "Fourmaux, S." Topic electron microscopy
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1. Generation of a beam of fast electrons by tightly focusing a radially polarized ultrashort laser pulse.

Author

Payeur, S., Fourmaux, S., Schmidt, B. E., MacLean, J. P., Tchervenkov, C., Légaré, F., Piché, M., and Kieffer, J. C.

Subjects
*ULTRASHORT laser pulses, *ELECTRON beams, *SUPERPOSITION principle (Physics), *ELECTRON microscopy, *ELECTRIC fields, *LASER pulses
Abstract

The generation of an electron beam through longitudinal field acceleration from a tightly focused radially polarized (TM01) laser mode is reported. The longitudinal field is generated by focusing a TM01 few-cycle laser pulse (1.8 μm, 550 μJ, 15 fs) with a high numerical aperture parabola. The created longitudinal field in the focal region is intense enough to ionize atoms and accelerate electrons to 23 keV of energy from a low density oxygen gas. The characteristics of the electron beam are presented. [ABSTRACT FROM AUTHOR]

Published
2012
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