Frequency up-conversion He-Ne laser without inversion

TitleFrequency up-conversion He-Ne laser without inversion
Publication TypeJournal Article
Year of Publication2005
AuthorsAhufinger, V, Shuker, R, Corbalán, R
JournalApplied Physics B-Lasers and Optics
Volume80
Issue1
Pagination67-72
Date PublishedJAN
ISSN0946-2171
Abstract

{A scheme for obtaining up-conversion lasing without inversion in the visible range is proposed using a Doppler-broadened He-Ne mixture as active medium. We consider a cascade scheme (2s(2) <––> 2p(2) <––> 1s(3)) with a frequency upconversion ratio of 1.91. The upper transition is inverted and driven by an external field and lasing without inversion occurs at 616.4 nm provided that the collisional decay rates of the 1s(3) and 1s(5) levels overcome a certain threshold.}

DOI10.1007/s00340-004-1694-0
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