Femtosecond tunable-wavelength photoassisted cold field emission

Autor:	Rudolf Haindl, Kerim Köster, John H. Gaida, Maximilian Franz, Armin Feist, Claus Ropers
Rok vydání:	2023
Předmět:	Physics and Astronomy (miscellaneous) General Engineering General Physics and Astronomy
Zdroj:	Applied Physics B: Lasers and Optics
ISSN:	1432-0649 0946-2171
Popis:	We demonstrate photoassisted cold field emission (PFE) from a tungsten tip induced by tunable-wavelength low-power femtosecond laser excitation. The emission current from the apex of the (310)-oriented single-crystalline emitter is shown to linearly depend on the incident laser power, while the effective work function is reduced by the respective photon energy. Our results promote the implementation of the linear regime in laser-triggered cold field emission for ultrafast transmission electron microscopy.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7144c24ce694abfc7d284d86312477c2 https://doi.org/10.1007/s00340-023-07968-2 Zobrazit plný text záznamu Full text from SpringerLink