Three-photon femtosecond pumped backwards lasing in argon

Arthur Dogariu, Richard B. Miles

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


We demonstrate backwards lasing in atomic argon directly excited via a three-photon pumping in air mixtures with argon mole fractions down to 10%. We achieve well collimated, narrowband coherent emission at 1327nm by using both broadband femtosecond excitation and narrow linewidth picosecond excitation in the vicinity of 261nm. This approach shows promise for standoff trace detection in the atmosphere.

Original languageEnglish (US)
Pages (from-to)A544-A552
JournalOptics Express
Issue number6
StatePublished - Mar 21 2016

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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