Abstract
The picosecond interband two-photon laser excitation of PbWO4 crystals at a temperature of 10 K leads to electronic excitation energy accumulation, which results in almost 100% induced absorption in the 450–750 nm spectral range. The relaxation time of this induced absorption exceeds 100 min. The electronic excitation energy accumulated in the PbWO4 crystal at T = 10 K excites the intrinsic luminescence with a decay time longer than 45 min. The decay kinetics and the spectra of the intrinsic luminescence of the PbWO4 crystal at a temperature of 10 K were measured under two-photon and single-photon excitation. The luminescence under two-photon and single-photon excitation revealed a difference in the structure of the spectra.
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Published in Russian in Optika i Spektroskopiya, 2016, Vol. 121, No. 4, pp. 553–557.
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Lukanin, V.I., Karasik, A.Y. PbWO4 crystal for laser energy accumulation and transformation. Opt. Spectrosc. 121, 503–506 (2016). https://doi.org/10.1134/S0030400X16100143
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DOI: https://doi.org/10.1134/S0030400X16100143