Macfarlane R.; Meltzer R.; Malkin B.
(1998)
We report the observation of optically resolved isotope, hyperfine, and superhyperfine structure in the spectrum of Nd3+ ions in YLiF4, isotopically pure in 7Li. This observation was made on the (4f3-4f3), 4I9/2(1)→4F3/2(1) ...