Numerical study of the laser-tip coupling in surface plasmon assisted stacked-double-gate field emitter arrays

Oh, Youngjin; Mustonen, Anna; Feurer, Thomas; Tsujino, Soichiro (2015). Numerical study of the laser-tip coupling in surface plasmon assisted stacked-double-gate field emitter arrays. Journal of Vacuum Science & Technology B, 33(3), 03C112. AVS Publications 10.1116/1.4915252

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Recently, sub-wavelength-pitch stacked double-gate metal nanotip arrays have been proposed to realize high current, high brightness electron bunches for ultrabright cathodes for x-ray free-electron laser applications. With the proposed device structure, ultrafast field emission of photoexcited electrons is efficiently driven by vertical incident near infrared laser pulses, via near field coupling of the surface plasmon polariton resonance of the gate electrodes with the nanotip apex. In this work, in order to gain insight in the underlying physical processes, the authors report detailed numerical studies of the proposed device. The results indicate the importance of the interaction of the double-layer surface plasmon polariton, the position of the nanotip, as well as the incident angle of the near infrared laser pulses.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Institute of Applied Physics
08 Faculty of Science > Institute of Applied Physics > Lasers

UniBE Contributor:

Mustonen, Anna and Feurer, Thomas

Subjects:

500 Science
500 Science > 530 Physics
600 Technology > 620 Engineering

ISSN:

2166-2746

Publisher:

AVS Publications

Language:

English

Submitter:

Martin Frenz-Lips

Date Deposited:

04 Feb 2016 16:37

Last Modified:

04 Feb 2016 16:37

Publisher DOI:

10.1116/1.4915252

BORIS DOI:

10.7892/boris.74994

URI:

https://boris.unibe.ch/id/eprint/74994

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