| Literature DB >> 19257734 |
P P Rajeev1, M Gertsvolf, P B Corkum, D M Rayner.
Abstract
From the pulse length dependence of the absorption of intense ultrashort laser pulses focused inside fused silica, we reveal the role field-assisted collisional ionization plays in the multiphoton ionization process. This constitutes a cold avalanche ionization mechanism that persists at pulse lengths considered too short for a traditional avalanche.Entities:
Year: 2009 PMID： 19257734 DOI： 10.1103/PhysRevLett.102.083001
Source DB: PubMed Journal: Phys Rev Lett ISSN： 0031-9007 Impact factor: 9.161