title: Laser spectroscopy using beam-overlap modulation.
abstract: A new Doppler-free laser spectroscopy method is demonstrated that employs modulation of the position of a laser beam rather than the commonly used intensity or polarization modulation. The technique is applicable in saturated absorption as well as fluorescence measurements, as is illustrated in experiments on sodium and iodine lines. A particular feature of the method is that Doppler- and background-free fluorescence spectra can be recorded without using intermodulation techniques.
authors.forename: T P
authors.initials: TP
authors.lastname: Duffey
authors.forename: D
authors.initials: D
authors.lastname: Kammen
authors.forename: A L
authors.initials: AL
authors.lastname: Schawlow
authors.forename: S
authors.initials: S
authors.lastname: Svanberg
authors.forename: H R
authors.initials: HR
authors.lastname: Xia
authors.forename: G G
authors.initials: GG
authors.lastname: Xiao
authors.forename: G Y
authors.initials: GY
authors.lastname: Yan