Collision broadening in Lamb-dip spectroscopy

Lewis Klein, Michel Giraud, Abraham Ben-Reuven

Research output: Contribution to journalArticlepeer-review

Abstract

A previously developed diagrammatic method for calculating the nonlinear response of a dilute gas at near resonance with strong classical radiation fields is extended to include velocity-dependent homogeneous and inhomogeneous broadening phenomena. The method is applied to two-level saturated-absorption (Lamb-dip) spectroscopy. Expressions are obtained for the collision-broadened Lamb dip probed by a weak field in the presence of an arbitrarily strong saturating field and are compared to the usual infinite-Doppler-width, weak-saturation expression. We study the effects of velocity and momentum transfer on the line-shape parameters and discuss the effect of phase-changing and strong inelastic collisions on the intensity.

Original languageEnglish
Pages (from-to)289-300
Number of pages12
JournalPhysical Review A
Volume16
Issue number1
DOIs
StatePublished - 1977

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