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Optical Engineering

Above-threshold multiphoton photoelectric effect of a gold surface
Author(s): Gyozo Farkas; Csaba Toth; Ambrus Kohazi-Kis
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Paper Abstract

A discrete structure consisting of peaks separated by hv photon energy was found experimentally in the photoelectron energy spectrum, when illuminating a gold target surface by relatively long light pulses (approximately nanoseconds) and using moderate (approximately 120 MW/cm2) intensity of Nd:glass lasers (λ = 1.06 μm). This structure can be considered as the above-threshold photoeffect (ATP) of metal surfaces. Its occurrence at surprisingly low laser intensities [which are four orders of magnitude less than the typical intensity range of the analogous above-threshold ionization (ATI) of atoms] was observed when the space charge was considerably eliminated.

Paper Details

Date Published: 1 October 1993
PDF: 5 pages
Opt. Eng. 32(10) doi: 10.1117/12.145288
Published in: Optical Engineering Volume 32, Issue 10
Show Author Affiliations
Gyozo Farkas, Research Institute for Solid-State Physics (Hungary)
Csaba Toth, Univ. of California/San Diego (United States)
Ambrus Kohazi-Kis, Research Institute for Solid-State Physics (Hungary)


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