On the influence of the local vibration on spectral and laser characteristics of F2 colour centres in LiF crystals at low temperatures

A study of spectral and laser properties of the LiF: (ProQuest: Formulae and/or non-USASCII text omitted) crystal at low temperatures has revealed an electronic-vibrational interaction of electrons of the Fy centre with the local vibration of the centre, which occurs against the background of coupli...

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2015-01, Vol.45 (12), p.1111-1116
Main Authors: Papashvili, A G, Smetanin, S N, Doroshenko, M E
Format: Article
Language:English
Subjects:
Color centers
Lasers
Lattices
Liquid nitrogen
Spectra
Spectral lines
Texts
Vibration
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Summary:A study of spectral and laser properties of the LiF: (ProQuest: Formulae and/or non-USASCII text omitted) crystal at low temperatures has revealed an electronic-vibrational interaction of electrons of the Fy centre with the local vibration of the centre, which occurs against the background of coupling between electrons of Fy centres and lattice phonons. The interaction of electrons with the local vibration manifests itself in spectra in the form of narrow lines superimposed on wide electron-phonon lines that are due to the electron-lattice interaction. An anomalous behaviour of spectra] LiF:(ProQuest: Formulae and/or non-USASCII text omitted) laser lines is also found at liquid nitrogen temperature upon selective excitation; this behaviour is explained by the difference in the probabilities of the lattice and local interactions.
ISSN:1063-7818
1468-4799
DOI:10.1070/QE2015v045n12ABEH015816