title: Elemental analysis by doubly resonant four-wave mixing in Na-seeded flames.
abstract: Doubly resonant four-wave mixing has been used with two lasers set for resonance with the two Na D-line transitions to perform elemental analysis with a Na-seeded flame. The method is analogous to phase-conjugation methods where all lasers have the same frequency. Strong saturation effects and dynamic Stark splittings are observed and used to optimize the mixing efficiency. A nonperturbative theory is presented and shown to describe the experimental results.
authors.forename: B K
authors.initials: BK
authors.lastname: Winker
authors.forename: J C
authors.initials: JC
authors.lastname: Wright