Above-threshold multiphoton photoelectric effect of a gold surface

Gyozo Farkas; Csaba Toth; Ambrus Kohazi-Kis

doi:10.1117/12.145288

1 October 1993 Above-threshold multiphoton photoelectric effect of a gold surface

Gyozo Farkas, Csaba Toth, Ambrus Kohazi-Kis

Author Affiliations +

Optical Engineering, Vol. 32, Issue 10, (October 1993). https://doi.org/10.1117/12.145288

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.

Citation Download Citation

Gyozo Farkas, Csaba Toth, and Ambrus Kohazi-Kis "Above-threshold multiphoton photoelectric effect of a gold surface," Optical Engineering 32(10), (1 October 1993). https://doi.org/10.1117/12.145288

Published: 1 October 1993

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