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Author Basiev, Tasoltan T. ♦ Karasik, Aleksandr Ya ♦ Konyushkin, V. A. ♦ Papashvili, A. G. ♦ Pukhov, K. K. ♦ Ermakov, I. V. ♦ Gellermann, V.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ♦ ABSORPTION ♦ COLOR CENTERS ♦ CRYSTAL STRUCTURE ♦ CRYSTALS ♦ DECAY ♦ DIPOLE MOMENTS ♦ ELECTRON-PHONON COUPLING ♦ LITHIUM FLUORIDES ♦ LUMINESCENCE ♦ PHONONS ♦ POLARIZATION ♦ ALKALI METAL COMPOUNDS ♦ COUPLING ♦ CRYSTAL DEFECTS ♦ EMISSION ♦ FLUORIDES ♦ FLUORINE COMPOUNDS ♦ HALIDES ♦ HALOGEN COMPOUNDS ♦ LITHIUM COMPOUNDS ♦ LITHIUM HALIDES ♦ PHOTON EMISSION ♦ POINT DEFECTS ♦ QUASI PARTICLES ♦ SORPTION ♦ VACANCIES
Abstract LiF crystals with colour centres exhibiting a zero-phonon line (ZPL) at 1080 nm in absorption and luminescence are studied. The decay time of luminescence of colour centres at 10 K is 260 - 280 ns, the ZPL half-width is 4.7 cm{sup -1}, and colour centres are characterised by a weak electron - phonon interaction (the Huang - Rhys factor is S < 0.11). The polarisation analysis of luminescence showed that the transition dipole moments of colour centres are oriented along the crystal axes [100], [010], and [001]. The model of aggregate F{sub 4} colour centres having a spatial structure with three symmetry axes C{sub 2} may correspond to the colour centres studied in the paper. (active media. lasers)
ISSN 10637818
Educational Use Research
Learning Resource Type Article
Publisher Date 2002-08-31
Publisher Place United States
Journal Quantum Electronics
Volume Number 32
Issue Number 8


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