The interaction of 193 nm excimer laser radiation with single-crystal zinc oxide: generation of long lived highly excited particles with evidence of Zn Rydberg formation

Journal Article · Wed Jan 01 00:00:00 EST 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4892847· OSTI ID:1159476

Kahn, E. H. ^[1]; Langford, S. C. ^[1]; Dickinson, J. T. ^[1]; Boatner, Lynn A ^[2]

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1. Washington State University, Pullman
2. ORNL

We observe intense Zn ion and atom emissions when single-crystal ZnO is exposed to 193-nm excimer laser radiation at fluences below the threshold for optical breakdown. Zn+ and ground state Zn are readily identified by mass-selected, time-of-flight techniques using a quadrupole mass spectrometer. Particles are also detected with Channeltron electron multipliers that cannot be mass selected. We provide evidence that these particles correspond to high lying Rydberg states of atomic Zn produced by a resonance excitation involving two laser photons.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1159476
• Journal Information: Journal of Applied Physics, Vol. 116, Issue 8; ISSN 0021--8979
• Country of Publication: United States
• Language: English

Related Subjects

193 nm excimer laser radiation
Zn Rydberg
single-crystal ZnO