F. Sabary et H. Bergeret, LASER-INDUCED ELECTRON-EMISSION FROM GRANULAR GOLD-FILMS, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 340(1), 1994, pp. 199-203
We report on measurements of the laser-driven electron emission from a
granular gold film. The light source was a picosecond Nd:YAG laser. W
e illuminated the sample using the harmonics of this laser fundamental
frequency (wavelengths 532, 355 and 266 nm). By comparison with a smo
oth gold thin film, the emitted current is three orders of magnitude h
igher for the granular gold film at 532 nm. This enhancement is due to
plasmon resonances in the gold particles. We discuss the possibility
of using such a granular gold film as an electron source in a photoinj
ector.