Ultranarrow lines on the transition with one narrow level

If the homogeneous width of one of the levels (either upper or lower) of the transition of a gas medium (the particles of the gas are treated as two level systems) is narrow enough, then in the intensities of wave there may occur a very narrow spectral peak. If the width of one of the levels tends t...

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Bibliographic Details
Published in:Physics letters. A 1971-01, Vol.35 (3), p.184-184
Main Authors: Yeryomchenko, D.V., Uspenskii, A.V.
Format: Article
Language:English
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Summary:If the homogeneous width of one of the levels (either upper or lower) of the transition of a gas medium (the particles of the gas are treated as two level systems) is narrow enough, then in the intensities of wave there may occur a very narrow spectral peak. If the width of one of the levels tends to zero, the width of the peak tends also to zero. A simple method for the determination of both the whole width (γ ab) of the transition and the ratio of homogeneous widths of the levels (γ a/γ b) is proposed.
ISSN:0375-9601
1873-2429
DOI:10.1016/0375-9601(71)90138-1