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Time-resolved luminescence Z-scan of CsI using power femtosecond laser pulses

Abstract : Time-resolved Z-scan technique gives the opportunity to obtain consistent data for dependence of the yield and decay kinetics from excitation density. The excitation by 4th harmonics of femtosecond Ti:Sapphire laser (6.2 eV) allows to measure with wide dynamical range of excitation density (from 1017 to 1022 excitations per cubic centimeter) CsI luminescence. In the density range 1018-1019 cm−3 the yield of 310 nm band (fast intrinsic luminescence) increases linearly with energy of the laser pulse, and yield of 430 nm band decreases inversely. In the same density range the subnanosecond decay of 310 nm band becomes slower and in microsecond kinetics of 430 nm band increases the contribution of nanosecond components.
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Submitted on : Friday, October 22, 2021 - 12:29:31 PM
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A. Belsky, N. Fedorov, S. Gridin, A. Gektin, P. Martin, et al.. Time-resolved luminescence Z-scan of CsI using power femtosecond laser pulses. Radiation Measurements, Elsevier, 2019, 124, pp.1-8. ⟨10.1016/j.radmeas.2019.02.021⟩. ⟨hal-02130412⟩



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