Title :
S- and P-polarization dependence of localized surface plasmon enhanced photoelectron emission from fractal gold/ITO nanostructures
Author :
Word, Robert C. ; Fitzgerald, Joe ; Könenkamp, Rolf
Author_Institution :
Phys. Dept., Portland State Univ., Portland, OR, USA
Abstract :
We report on three-photon photoelectron emission (3-PPE) from gold/ITO nanostructures enhanced by localized surface plasmon “hot spots” and imaged by IR-PEEM. Individual hot spots respond most favorably to polarized light within ±45° of S-polarization. Conversely, the average photoemission response was strongest for P-polarized light because of the combination of favorable transmission coefficients, the third-order probability of 3-PPE, and the wide angle response of the hot spots.
Keywords :
fractals; gold; indium compounds; nanostructured materials; photoelectron microscopy; photoemission; semiconductor materials; semiconductor-metal boundaries; surface plasmons; tin compounds; Au-ITO; IR-PEEM; P-polarization dependence; P-polarized light; S-polarization dependence; average photoemission response; fractal gold-ITO nanostructures; localized surface plasmon enhanced photoelectron emission; localized surface plasmon hot spots; third-order probability; three-photon photoelectron emission; transmission coefficients; wide angle response; Films; Gold; Indium tin oxide; Lasers; Lighting; Photoelectricity; Plasmons; PEEM; photoelectron emission; polarization; random nanostructures; surface plasmon;
Conference_Titel :
Nanotechnology (IEEE-NANO), 2011 11th IEEE Conference on
Conference_Location :
Portland, OR
Print_ISBN :
978-1-4577-1514-3
Electronic_ISBN :
1944-9399
DOI :
10.1109/NANO.2011.6144427
