Coherent ultraviolet generated by wavepackets interacting with χ(3) In Rb and K atoms

J. Gao, H. C. Tran, P. C. John, J. G. Eden

Research output: Contribution to journalConference article

Abstract

Wavepackets formed from the ns and (n-2)d states of Rb and K (n = 8 for K, 11 and 12 for Rb) have been observed by four wave mixing in pump-probe experiments. The temporal behavior of the wavepacket is observed by monitoring the coherent ultraviolet radiation generated near the alkali mp 2P → 2S1/2 resonance transitions (7 ≤ m ≤ 12 for Rb) when a ∼100 fs, red probe pulse (λ ∼620 nm) is scattered by the wavepacket established by an earlier (identical) pump pulse. The spatial and spectral characteristics of the ultraviolet emission are well-described by axially phase-matched, four wave mixing and all of the prominent frequency components of the wavepackets are associated with energy differences between pairs of excited states for which Δl = 0 or 2. These results demonstrate that the wavepacket modulates χ(3) of the medium, thus rendering the wavepacket detectable.

Original languageEnglish (US)
Pages (from-to)214-222
Number of pages9
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume3403
DOIs
StatePublished - Dec 1 1997
EventInternational Conference on Atomic and Molecular Pulsed Lasers II - Tomsk, Russian Federation
Duration: Sep 22 1997Sep 26 1997

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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