Abstract

A mode competition effect is observed with a Na-colored H₂-O₂-Ar flame located inside the cavity of a pulsed tunable dye laser tuned near one of the D-lines. When the Na-concentration is sufficiently high, laser action in the dominant mode is temporarily suppressed and develops in an adjacent mode. Meantime, the saturation of the Na-vapor progresses and, ultimately, laser action in the dominant mode is restored. This explanation is supported by semiquantitative computer simulation.

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Opt. Express 22(22) 27489-27503 (2014)

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Opt. Express 25(13) 14968-14973 (2017)