Abstract
We study ponderomotive electron acceleration with polarization-gated surface-plasmon-resonance enhanced optical fields excited by two counter-incident femtosecond laser pulses. Such a polarization-gated excitation scheme creates an intense linearly polarized high-gradient evanescent field for electron acceleration. The maximum kinetic energy of the accelerated ultrafast electrons is doubled with a symmetric angular distribution about the normal of the metal surface as compared with the conventional one-pulse excitation scheme.
| Original language | English |
|---|---|
| Article number | 201108 |
| Journal | Applied Physics Letters |
| Volume | 93 |
| Issue number | 20 |
| DOIs | |
| State | Published - 2008 |
| Externally published | Yes |
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