Abstract
With an unfocused femtosecond laser tuned to overlap three-photon resonance with a fine structure doublet, a third harmonic field is predicted which has a bandwidth much narrower than that of the laser. Consequently, this third harmonic field decays slowly with time, lasting as long as several nanoseconds. The population left in the excited states is suppressed by a destructive interference between different excitation pathways.
Original language | English |
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Pages (from-to) | 257-261 |
Number of pages | 5 |
Journal | Optics Communications |
Volume | 146 |
Issue number | 1-6 |
DOIs | |
State | Published - Jan 15 1998 |
Scopus Subject Areas
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Physical and Theoretical Chemistry
- Electrical and Electronic Engineering