Pumping of atomic alkali lasers by photoexcitation of a resonance line blue satellite and alkali-rare gas excimer dissociation

J. D. Readle, C. J. Wagner, J. T. Verdeyen, T. M. Spinka, D. L. Carroll, J. G. Eden

Research output: Contribution to journalArticlepeer-review

Abstract

Photoassociation of alkali-rare gas atomic collision pairs provides an alternative approach to optically pumping atomic alkali lasers. Lasing on the 6 P2 1/2 →6 S2 1/2 (D1) transition of Cs has been observed when the blue satellite of the 6 P2 3/2 6 S2 1/2 (D2) transition, peaking at ∼837 nm for mixtures of Cs vapor, Ar, and ethane, is pumped by a pulsed dye laser. For 50% output coupling, laser threshold with respect to absorbed pump energy is ∼40 μJ at T=435 K and the slope efficiency approaches 10%. The measured spectral breadth for the blue satellite (5 nm at 410 K) will accommodate cw pumping of the Cs laser with conventional semiconductor lasers.

Original languageEnglish (US)
Article number251112
JournalApplied Physics Letters
Volume94
Issue number25
DOIs
StatePublished - 2009

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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