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Optics Communications

Experimental study of spectral condensation of dye laser emission near the absorption lines of intracavity atoms

Ya I Khanin, A.G. Kagan, V.P. Novikov, М. А. Новиков, I.N. Polushnik, А. И. Щербаков

Published Mar 1, 1980• 18 citations
Publisher
DOI
10.1016/0030-4018(80)90283-7

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Optical absorption in short-lived excited states of atomic neon caused by dye-laser intracavity absorption has been observed. The states were excited by a microwave discharge in neon gas produced by a microwave cavity located inside the optical cavity of the dye laser. All transitions arising from the 2p manifold of states that are usually seen in emission are here seen in absorption. Best theoretical estimates of the number density of each of the 2p states in the discharge is about 10(5)-10(7)/cm(3), and the mean lifetime of the states is about 19 x 10(-9) sec.

Optics Letters•Aug 1, 1981•7 citations
A new technique for quantitative detection of atomic absorption by intracavity dye-laser quenching is studied. For the sodium D(2) line, a sensitivity of 7 x 10(4) atoms/cm(3) x 1% quenching is obtained; and the sensitivity in single-pass detection is 4 x 10(8) atoms/cm(3) x 1% absorption for a 15-cm cell. Use of a cw dye laser improves the sensitivity and the stability. The dependence of the sensitivity on the bandwidth of laser action is measured, and a simple theoretical consideration is given for single-pass absorption.
Optical absorption in short-lived excited states of atomic neon caused by dye-laser intracavity absorption has been observed. The states were excited by a microwave discharge in neon gas produced by a microwave cavity located inside the optical cavity of the dye laser. All transitions arising from the 2p manifold of states that are usually seen in emission are here seen in absorption. Best theoretical estimates of the number density of each of the 2p states in the discharge is about 10(5)-10(7)/cm(3), and the mean lifetime of the states is about 19 x 10(-9) sec.