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Pulsed-Laser Mode Competition with a Na-Colored Intracavity Flame

Volume 32, Number 2 (April 1978) Page 189-192

Van Dijk, C.A.; Alkemade, C. Th. J.; Zeegers, P. J. Th.

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.