Abstract
We report high harmonic generation from a 248.6-nm KrF laser giving harmonic orders up to the 37th (67 Å) in a helium gas jet and the 35th (71 Å) in neon, for laser intensities up to 4 × W/ in 380-fs pulses. These observations are interpreted using theoretical modeling that identifies the ion species , , and as the sources of the highest harmonics.
- Received 16 May 1995
DOI:https://doi.org/10.1103/PhysRevA.53.R31
©1996 American Physical Society