Journal
PHYSICAL REVIEW A
Volume 98, Issue 4, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.98.043434
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Funding
- U.S. Department of Energy, Division of Chemical Sciences, Atomic, Molecular and Optical Sciences Program [DE-SC0001771]
- U.S. National Science Foundation [PHY-1734006]
- AFOSR MURI [FA9550-16-1-0121]
- National Science Foundation [ACI-1532235, ACI-1532236]
- University of Colorado Boulder
- Colorado State University
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We study the excitation to Rydberg states in the interaction of the hydrogen atom with a short, strong laser pulse. Utilizing solutions of the time-dependent Schrodinger equation we find that the parity of the populated angular momentum states agrees with the selection rules for multiphoton resonant absorption at low intensities, if the pulse length is not too short. In contrast, the parity effect cannot be observed for ultrashort pulses as well as for long pulses at high intensities. We further identify signatures of the population in the excited states via the line emissions from the populated np states after the end of the pulse exhibiting the parity effect.
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