Observation of continuum-continuum Autler-Townes splitting
Journal Article
·
· Physical Review Letters
- Chemistry Department, Brookhaven National Laboratory, Upton, New York 11973 (United States)
Photoelectron energy spectra resulting from two-photon ionization of calcium atoms by 180 fs pulses have been studied as a function of wavelength (380--405 nm) and intensity (9{minus}900GW/cm{sup 2}). When the wavelength is tuned near the 4{ital s}{r_arrow}4{ital p} or 4{ital s}{r_arrow}5{ital s} {ital ionic} core transition, the photoelectron peaks display a characteristic splitting proportional to the field strength and assignable to a two-electron continuum-continuum Autler-Townes effect. Spectra obtained by an essential-state model involving three coupled continua are compared to the experiment.
- Research Organization:
- Brookhaven National Laboratory
- DOE Contract Number:
- AC02-76CH00016
- OSTI ID:
- 83982
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 4 Vol. 75; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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