Yu. V. Malyukin, P. N. Zhmurin, N. L. Pogrebnyak, N. V. Znamenskiy, E. A. Manykin, D. V. Marchenko, E. A. Petrenko, “Anomalous redistribution of the intensity in the absorption spectra of a Pr3+:LaF3 crystal”, Kvantovaya Elektronika, 1997, Volume 24, Number 3,Pages 283

Laser applications and other topics in quantum electronics

Anomalous redistribution of the intensity in the absorption spectra of a Pr³⁺:LaF₃ crystal

Yu. V. Malyukin^a, P. N. Zhmurin^a, N. L. Pogrebnyak^a, N. V. Znamenskiy^b, E. A. Manykin^b, D. V. Marchenko^b, E. A. Petrenko^b

^a Institute for Single Crystals, National Academy of Sciences of Ukraine, Kharkov
^b Russian Research Centre "Kurchatov Institute", Moscow

Abstract: An experimental investigation was made of the optical absorption spectra corresponding to transitions in the Pr³⁺ ion in crystalline LaF₃ and Y₂SiO₅ matrices. The investigation was carried out in the temperature range 5 — 80 K. An anomalous redistribution of the intensity was observed in the absorption spectrum of a Pr³⁺ :LaF₃ crystal. This redistribution did not agree with the hypothesis of the Boltzmann population of the states in discrete multilevel systems.

PACS: 42.70.Hj, 78.40.Ha, 71.55.Ht

Received: 17.09.1996