Perturbation-facilitated all-optical triple resonance spectroscopy of the Na2 b 3Πu state

Thou-Jen Whang, W. C. Stwalley, L. Li, A. M. Lyyra

Research output: Contribution to journalArticle

37 Citations (Scopus)

Abstract

The Na2 b 3Πu state has been studied by the continuous wave (cw) all-optical triple resonance (AOTR) technique. The AOTR technique used here corresponds to a perturbation-facilitated optical-optical double resonance (PFOODR) excitation through A 1Σu+∼b 3Πu mixed intermediate levels from the ground state to the 2 3Π g state and stimulated emission pumping (SEP) of the 2 3Πg→b 3πu transition. This sub-Doppler high-resolution PFOODR-SEP technique has allowed us to reach many b 3Πu levels (Ω=0, 1, 2, perturbed and unperturbed, including low v below the A 1Σu + potential minimum and higher vibrational levels up to v=57), Based on these new high resolution data and previous results from high resolution spectroscopy, we have determined a new set of deperturbed molecular constants from the b 3Πu state up to v=57, the corresponding RKR potential energy curve and the A 1Σu +∼b 3Πu spin-orbit interaction constants. This represents an example of a powerful and general technique for observing a "dark" (e.g., triplet) perturbing state when only the "bright" (e.g., singlet) perturbed state is well known from single photon spectroscopy.

Original languageEnglish
Pages (from-to)7211-7219
Number of pages9
JournalThe Journal of Chemical Physics
Volume97
Issue number10
DOIs
Publication statusPublished - 1992 Jan 1

Fingerprint

Spectroscopy
Pumping (laser)
perturbation
Stimulated emission
stimulated emission
spectroscopy
high resolution
pumping
Electron transitions
Potential energy
spin-orbit interactions
Ground state
atomic energy levels
continuous radiation
Orbits
Photons
potential energy
ground state
photons
curves

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

Cite this

Whang, Thou-Jen ; Stwalley, W. C. ; Li, L. ; Lyyra, A. M. / Perturbation-facilitated all-optical triple resonance spectroscopy of the Na2 b 3Πu state. In: The Journal of Chemical Physics. 1992 ; Vol. 97, No. 10. pp. 7211-7219.
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Perturbation-facilitated all-optical triple resonance spectroscopy of the Na2 b 3Πu state. / Whang, Thou-Jen; Stwalley, W. C.; Li, L.; Lyyra, A. M.

In: The Journal of Chemical Physics, Vol. 97, No. 10, 01.01.1992, p. 7211-7219.

Research output: Contribution to journalArticle

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