19 November 2003 Absorption cross-section determination of F2 colour centres in a LiF crystal by picosecond laser saturable absorption studies
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Proceedings Volume 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life; (2003) https://doi.org/10.1117/12.524909
Event: 19th Congress of the International Commission for Optics: Optics for the Quality of Life, 2002, Florence, Italy
Abstract
The saturable absorption behavior of F2- color centers in LiF is studied by picosecond laser pulse excitation (wavelength λL = 1054 nm, duration ΔtL = 6 ps). The color center number density, N0, the ground-state absorption cross-section, σL, and the single-photon excited-state absorption cross-section, σex,L, are determined by numerical fitting the energy density dependent energy transmission. A decrease of energy transmission at high excitation energy densities (w0L > 1 J cm-2) is attributed to two-photon absorption of other color centers (N1 and N2 bands of F4 centers) present in the sample.
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Taiju Tsuboi, O. Lammel, Alfons Penzkofer, "Absorption cross-section determination of F2 colour centres in a LiF crystal by picosecond laser saturable absorption studies", Proc. SPIE 4829, 19th Congress of the International Commission for Optics: Optics for the Quality of Life, (19 November 2003); doi: 10.1117/12.524909; https://doi.org/10.1117/12.524909
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