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Proceedings Paper

Confined electron emission with femtosecond timing: nonlinearity, localization, enhancement
Author(s): Max Gulde; Reiner Bormann; Alexander Weismann; Sergey V. Yalunin; Claus Ropers
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Paper Abstract

The local extraction of electrons from metal nanotips is an essential component of both scanning tunneling microscopes and transmission or scanning electron microscopes based on field emission cathodes. Laser-induced electron emission from sharp tip structures is a prerequisite for equipping such methods with ultrafast temporal resolution. In this paper, recent experiments on femtosecond electron emission from sharp gold tips are discussed. Based on far-field and near-field characterization, confined multiphoton electron emission from the apex is demonstrated. The effective nonlinearity can be tuned by the application of an additional static bias voltage.

Paper Details

Date Published: 1 March 2010
PDF: 10 pages
Proc. SPIE 7600, Ultrafast Phenomena in Semiconductors and Nanostructure Materials XIV, 76001I (1 March 2010); doi: 10.1117/12.843110
Show Author Affiliations
Max Gulde, Georg-August-Univ. Göttingen (Germany)
Reiner Bormann, Georg-August-Univ. Göttingen (Germany)
Alexander Weismann, Georg-August-Univ. Göttingen (Germany)
Sergey V. Yalunin, Georg-August-Univ. Göttingen (Germany)
Claus Ropers, Georg-August-Univ. Göttingen (Germany)


Published in SPIE Proceedings Vol. 7600:
Ultrafast Phenomena in Semiconductors and Nanostructure Materials XIV
Jin-Joo Song; Kong-Thon Tsen; Markus Betz; Abdulhakem Y. Elezzabi, Editor(s)

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