Applied Physics Letters

Observation of gain in the violet bands of sodium vapor

John T. Bahns, William C. Stwalley

Published May 1, 1984• 45 citations

Abstract

We report our observations attributable to optical gain through stimulated emission in the violet when sodium vapor is optically pumped with the 350.7-nm line of a krypton ion laser. In addition we present the accompanying fluorescence spectrum which shows previously unreported discrete structure on the short wavelength side of the violet bands.

DOI: 10.1063/1.94954

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Applied Physics Letters

Observation of gain in the violet bands of sodium vapor

John T. Bahns, William C. Stwalley

Published May 1, 1984• 45 citations

Publisher

Abstract

DOI: 10.1063/1.94954

Related papers

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Acta Optica SinicaJan 1, 19860 citations

The formation of

{\mathrm{Na}}^{+}

and

{\mathrm{Na}}_{2}^{+}

in laser-irradiated sodium vapor has been studied using a nitrogen-laser-pumped dye laser. The effects of irradiation by this pulsed laser are substantially different from those reported previously using a cw device, but otherwise identical experimental conditions. In contrast to the earlier experiments, in which ions were observed only when the cw laser was tuned to a

D

line, relatively large "background" ion signals are observed at all excitation wavelengths, a result of multiphoton processes involving the

{\mathrm{Na}}_{2}

component of the vapor. It is shown that the laser bandwidth and pulse duration are extremely important parameters; a wide bandwidth effectively magnifying the importance of the dimer component of the vapor and a short pulse duration minimizing the effects of interactions between excited atoms and molecules.