ARTICLES: Use of a dye laser for nonlinear spectroscopy of the 23S1-23P transition in 6,7Li+ ions
A tunable dye laser was used to measure the fine structure of the 23P multiplet and the hyperfine structure of the 23S1, and 23P1,2 states of 6,7Li+ isotopes. The interaction constants for the hyperfine structure of the 3S1 and 3P levels were determined, showing good agreement with the theoretical data, and the splitting of the fine structure of the 3P line was also determined. The isotope shift of this transition was found and showed good agreement with values obtained by interferometric measurements.