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New O II 6640-Å laser line

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4 Author(s)
Birnbaum, M. ; Aerospace Corporation, El Segundo, CA ; Tucker, A. ; Gelbwachs, J. ; Fincher, C.

A prominent red laser line has been observed in oxygen and air at a wavelength of 6640.2 ± 1 Å. This line corresponds to the3p^{2}Smin{1/2}max{0}-3s^{2}P_{1/2}at 6640.90 Å of the O II spectrum. It is the strongest member of the observed emission lines close to the laser line.

Published in:

Quantum Electronics, IEEE Journal of  (Volume:7 ,  Issue: 5 )