Strong-field ionization of clusters using two-cycle pulses at 1.8 μm.

ABSTRACT: The interaction of intense laser pulses with nanoscale particles leads to the production of high-energy electrons, ions, neutral atoms, neutrons and photons. Up to now, investigations have focused on near-infrared to X-ray laser pulses consisting of many optical cycles. Here we study strong-field ionization of rare-gas clusters (10³ to 10⁵ atoms) using two-cycle 1.8 μm laser pulses to access a new interaction regime in the limit where the electron dynamics are dominated by the laser field and the cluster atoms do not have time to move significantly. The emission of fast electrons with kinetic energies exceeding 3 keV is observed using laser pulses with a wavelength of 1.8 μm and an intensity of 1 × 10¹⁵ W/cm², whereas only electrons below 500 eV

SUBMITTER: Schutte B 

PROVIDER: S-EPMC5180105 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature