Ultrafast laser-induced field emission from a single carbon nanotube based nanotip
Résumé
Laser-induced electron emission from sharp tips has been observed when exploring various strong-field phenomena including multiphoton ionization (MPI) [1–3], above threshold photoionization (ATP) [4,6], and optical field emission [5]. The large optical field enhancement due to the sharp tip geometry greatly reduces the laser intensities needed to reach these strong regimes and therefore alleviates the need for high-power, low-repetition rate lasers. An additional DC field applied to the tip can be adjusted to modify the electron emission and in combination with differing laser parameters, different regimes of photoemission are attained. Investigations of the thermal response of the illumination are also studied for a variety of parameters.
Domaines
Physique [physics]| Origine | Fichiers produits par l'(les) auteur(s) |
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