Abstract
For a LiF crystal containing F3 (R1, R2), F2, F3 +, F4 (N1, N2), F3 -, and F2 - colour centers the absorption and emission spectroscopic behaviour of the F3 - centers is studied. The absorption cross-section spectrum and the number density of F3 - centers are extracted from saturable absorption and transmission measurements. Additionally fluorescence quantum distribution measurements and fluorescence lifetime measurements are carried out to determine the stimulated emission cross-section spectrum and the fluorescence quantum yield of the F3 - centers. Fluorescence excitation spectroscopy reveals the presence of an absorption band with its absorption peak around 700 nm (called R′ 1 band) in addition to the ground-state to first excited-state F3 - center absorption band centered at 800 nm (called R′ 2).
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PACS
61.72.Ji; 78.40.Ha; 78.55.Fv
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Penzkofer, A., Birkmann, C. & Tsuboi, T. Absorption and emission spectroscopic characterisation of F3 - colour centers in a LiF crystal. Appl Phys B 77, 521–527 (2003). https://doi.org/10.1007/s00340-003-1269-5
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DOI: https://doi.org/10.1007/s00340-003-1269-5