title: Inversion of the resonance line of Sr+ produced by optically pumping Sr atoms.
abstract: We report inversion and lasing on the optically pumped resonance line of Sr+. A mode-locked frequency-doubled dye laser was tuned to excite the dipole-allowed two-electron transition, 5S(2) (1)S(0)-4d5p (3)P1(0), in Sr vapor. The same laser then ionized the excited atoms, selectively producing ions in the Sr+ 5p (2)p(3/2)(0) excited level. The inversion density with respect to the Sr+ ground level was approximately 10(13) cm(-3).
authors.affiliation: Edward L. Ginzton Laboratory, W. W. Hansen Laboratories of Physics, Stanford University, Stanford, California 94305, USA.
authors.forename: W R
authors.initials: WR
authors.lastname: Green
authors.forename: R W
authors.initials: RW
authors.lastname: Falcone