Experimental observation of two-photon photoelectric effect from silver aerosol nanoparticles

Details Experimental observation of two-photon photoelectric effect from silver aerosol nanoparticles Experimental observation of two-photon photoelectric effect from silver aerosol nanoparticles

Oct 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007njph....9..368s&link_type=abstract

New Journal of Physics, Volume 9, Issue 10, pp. 368 (2007).

Physics

Scientific paper

We report on the observation of two-photon electron emission from silver nanoparticles suspended in nitrogen flow resulting from irradiating them with continuous wave and pulsed laser light with photon energies below the threshold of the single-photon photoelectric effect. The photoelectron yield is quadratic in the light intensity, and the two-photon electron emission threshold is evident. The efficiency of the two-photon photoelectric effect is determined for nanoparticles of various sizes. These experiments offer the net information on nonlinear quantum properties of an isolated single nanoparticle which is crucial for developing theoretical models.

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