Fluorescence branching ratios and magnetic tuning of the visible spectrum of SrOH

Duc Trung Nguyen, Timothy Steimle, Ivan Kozyryev, Meng Huang, Anne B. McCoy

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The magnetic tuning of the low rotational levels in the X̃2Σ+ (0,0,0), Ã2Πr (0,0,0), and B̃2Σ+ (0,0,0) electronic states of strontium hydroxide, SrOH, have been experimentally investigated using high resolution optical field-free and Zeeman spectroscopy of a cold molecular beam sample. The observed Zeeman shifts and splittings are successfully modeled using a traditional effective Hamiltonian approach to account for the interaction between the Ã2Πr and B̃2Σ+ states. The determined magnetic g-factors for the X̃2Σ+, Ã2Πr, and B̃2Σ+ states are compared to those predicted by perturbation theory. The dispersed fluorescence resulting from laser excitation of rotationally resolved branch features of the 00 0 B̃2Σ+←X̃2Σ+, 00 0 Ã2Π3/2←X̃2Σ+ and 00 0 Ã2Π1/2←X̃2Σ+ transitions have been recorded and analyzed. The measured fluorescence branching ratios are compared with Franck-Condon calculations. The required bending motion wave functions are derived using a discrete variable representation (DVR) method. Implications for laser slowing and magneto-optical trapping experiments for SrOH are described.

Original languageEnglish (US)
Pages (from-to)7-18
Number of pages12
JournalJournal of Molecular Spectroscopy
Volume347
DOIs
StatePublished - May 1 2018

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visible spectrum
Tuning
Fluorescence
tuning
Hamiltonians
fluorescence
Laser excitation
Molecular beams
Electronic states
Wave functions
strontium
molecular beams
hydroxides
lasers
perturbation theory
trapping
wave functions
Spectroscopy
Lasers
shift

Keywords

  • Branching ratios
  • Franck-Condon factors
  • Strontium hydroxide

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Spectroscopy
  • Physical and Theoretical Chemistry

Cite this

Fluorescence branching ratios and magnetic tuning of the visible spectrum of SrOH. / Nguyen, Duc Trung; Steimle, Timothy; Kozyryev, Ivan; Huang, Meng; McCoy, Anne B.

In: Journal of Molecular Spectroscopy, Vol. 347, 01.05.2018, p. 7-18.

Research output: Contribution to journalArticle

Nguyen, Duc Trung ; Steimle, Timothy ; Kozyryev, Ivan ; Huang, Meng ; McCoy, Anne B. / Fluorescence branching ratios and magnetic tuning of the visible spectrum of SrOH. In: Journal of Molecular Spectroscopy. 2018 ; Vol. 347. pp. 7-18.
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