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A novel fiber tip based electron source

MPS-Authors
/persons/resource/persons136078

Casandruc,  Albert
Miller Group, Atomically Resolved Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
International Max Planck Research School for Ultrafast Imaging & Structural Dynamics (IMPRS-UFAST), Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

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Kassier,  G.
Miller Group, Atomically Resolved Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

/persons/resource/persons136126

Zia,  Haider
Miller Group, Atomically Resolved Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;
International Max Planck Research School for Ultrafast Imaging & Structural Dynamics (IMPRS-UFAST), Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

/persons/resource/persons136038

Bücker,  R.
Miller Group, Atomically Resolved Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

/persons/resource/persons136024

Miller,  R. J. D.
Departments of Chemistry and Physics, University of Toronto, Toronto, ON, Canada;
Miller Group, Atomically Resolved Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

External Resource

https://dx.doi.org/10.1109/IVNC.2014.6894796
(Publisher version)

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Citation

Casandruc, A., Kassier, G., Zia, H., Bücker, R., & Miller, R. J. D. (2014). A novel fiber tip based electron source. In 27th International Vacuum Nanoelectronics Conference (IVNC), 2014 (pp. 171-172). IEEE.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0024-BE5B-0
Abstract
In this paper we report on the first experimental characterization of a fiber tip-based electron source where the electron emission is triggered by both, electric field and optical excitation. Our approach consists of coating a commercial 100 nm apex size NSOM multi-mode fiber tip with a 10 nm thick tungsten layer, which is back-illuminated in the presence of an extraction electric field. The measurements show a clear enhancement of the emission by the incident light, but the emission response time is slower than the optical trigger time, suggesting that thermal effects are predominant. This hypothesis is backed up by the temporal response measurements of the tip temperature.