title: Pulsed frequency-modulation spectroscopy at 3302 A.
abstract: We report the first known demonstration of frequency-modulation spectroscopy outside the visible spectral region. Specifically, we report the use of second-harmonic generation on a frequency-modulated visible dye-laser beam to produce a frequency-modulated ultraviolet beam that is used to observe the Na 3S ? 4P absorption at 3302 A.
authors.forename: N H
authors.initials: NH
authors.lastname: Tran
authors.forename: R
authors.initials: R
authors.lastname: Kachru
authors.forename: T F
authors.initials: TF
authors.lastname: Gallagher
authors.forename: J P
authors.initials: JP
authors.lastname: Watjen
authors.forename: G C
authors.initials: GC
authors.lastname: Bjorklund