A miniaturized electron source based on dielectric laser accelerator operation at higher spatial harmonics and a nanotip photoemitter

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Details zur Publikation

Autor(en): McNeur J, Kozak M, Ehberger D, Schönenberger N, Tafel A, Li A, Hommelhoff P
Zeitschrift: Journal of Physics B-Atomic Molecular and Optical Physics
Verlag: IOP PUBLISHING LTD
Jahr der Veröffentlichung: 2016
Band: 49
Heftnummer: 3
ISSN: 0953-4075


Abstract


Here we propose a miniaturized electron source driven by recent experimental results of laser-triggered electron emission from tungsten nanotips and dielectric laser acceleration of sub relativistic electrons with velocities as low as 5.7 x 10(7)m s(-1) or energies as low as 9.6 keV, less than 20% of the speed of light. The recently observed laser-triggered emission of coherent low-emittance electron pulses from tungsten nanotips naturally lends itself towards incorporation with subrelativistic dielectric laser accelerators (DLAs). These structures have previously been shown to accelerate 28 keV electrons and here we report on the utilization of the 4th and 5th spatial harmonics of near fields in the single grating DLA to achieve acceleration of electrons with kinetic energies of 15.2 and 9.6 keV. We then propose the combination of needle tip emitters with subrelativistic accelerators to form a mm-scale device capable of producing electrons with arbitrary energies.



FAU-Autoren / FAU-Herausgeber

Ehberger, Dominik
Lehrstuhl für Laserphysik
Hommelhoff, Peter Prof. Dr.
Lehrstuhl für Laserphysik
Kozak, Martin
Lehrstuhl für Laserphysik
Li, Ang
Lehrstuhl für Laserphysik
McNeur, Joshua
Lehrstuhl für Laserphysik
Schönenberger, Norbert
Lehrstuhl für Laserphysik
Tafel, Alexander
Lehrstuhl für Laserphysik


Zitierweisen

APA:
McNeur, J., Kozak, M., Ehberger, D., Schönenberger, N., Tafel, A., Li, A., & Hommelhoff, P. (2016). A miniaturized electron source based on dielectric laser accelerator operation at higher spatial harmonics and a nanotip photoemitter. Journal of Physics B-Atomic Molecular and Optical Physics, 49(3). https://dx.doi.org/10.1088/0953-4075/49/3/034006

MLA:
McNeur, Joshua, et al. "A miniaturized electron source based on dielectric laser accelerator operation at higher spatial harmonics and a nanotip photoemitter." Journal of Physics B-Atomic Molecular and Optical Physics 49.3 (2016).

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Zuletzt aktualisiert 2018-08-08 um 06:09