High-order harmonics of 248.6-nm KrF laser from helium and neon ions
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 4×1017 W/cm2 in 380-fs pulses. These observations are interpreted using theoretical modeling that identifies the ion species He+, Ne+, and Ne2+ as the sources of the highest harmonics.
- Publication:
-
Physical Review A
- Pub Date:
- January 1996
- DOI:
- 10.1103/PhysRevA.53.R31
- Bibcode:
- 1996PhRvA..53...31P
- Keywords:
-
- 42.65.Ky;
- 32.80.Rm;
- 42.65.Re;
- Frequency conversion;
- harmonic generation including higher-order harmonic generation;
- Multiphoton ionization and excitation to highly excited states;
- Ultrafast processes;
- optical pulse generation and pulse compression