| Autor: |
R G Hobbs, Y Yang, P D Keathley, M E Swanwick, L F Velásquez-Garcíia, F X Kärtner, W S Graves, K K Berggren |
| Předmět: |
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| Zdroj: |
Nanotechnology; 11/20/2014, Vol. 25 Issue 46, p1-1, 1p |
| Abstrakt: |
We demonstrate the design, fabrication, characterization, and operation of high-density arrays of Au nanorod electron emitters, fabricated by high-resolution electron beam lithography, and excited by ultrafast femtosecond near-infrared radiation. Electron emission characteristic of multiphoton absorption has been observed at low laser fluence, as indicated by the power-law scaling of emission current with applied optical power. The onset of space-charge-limited current and strong optical field emission has been investigated so as to determine the mechanism of electron emission at high incident laser fluence. Laser-induced structural damage has been observed at applied optical fields above 5 GV m−1, and energy spectra of emitted electrons have been measured using an electron time-of-flight spectrometer. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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