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arXiv · 1503.05842

Ultrafast time resolved photo-electric emission

Thomas Juffmann·Brannon B. Klopfer·Gunnar E. Skulason·Catherine Kealhofer·Fan Xiao·Seth M. Foreman·Mark A. Kasevich
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Abstract

The emission times of laser-triggered electrons from a sharp tungsten tip are directly characterized under ultrafast, near-infrared laser excitation at Keldysh parameters $6.6< γ< 19.1$. Emission delays up to 10 fs are observed, which are inferred from the energy gain of photoelectrons emitted into a synchronously driven microwave cavity. ~ fs timing resolution is achieved in a configuration capable of measuring timing shifts up to 55 ps. The technique can also be used to measure the microwave phase inside the cavity with a precision below 70 fs upon the energy resolved detection of a single electron.

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Thomas Juffmann, Brannon B. Klopfer, Gunnar E. Skulason, Catherine Kealhofer, Fan Xiao, Seth M. Foreman, Mark A. Kasevich. 2015-11-03. Ultrafast time resolved photo-electric emission. https://doi.org/10.1103/physrevlett.115.264803

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