Spectroscopy of condensed matter

Spectral and luminescent properties of Yb$^{3+}$ in CCl$_4$–GaCl$_3$–Yb$^{3+}$ solutions

E. A. Seregina, A. A. Seregin, G. V. Tikhonov, A. V. Podkopaev

State Scientific Centre of the Russian Federation Leypunsky Institute for Physics and Power Engineering, Obninsk, Russia

Abstract: The absorption and luminescence spectra and the luminescence lifetime of the excited state $^2F_{5/2}$ of Yb$^{3+}$ ions in CCl$_4$–GaCl$_3$–Yb$^{3+}$ solutions have been measured. Information was obtained on the Stark splitting of levels, on the absorption and stimulated emission cross sections, and on the quantum yield of Yb$^{3+}$ luminescence. The spectral dependences of the gain cross section are calculated for different relative inverse populations of the $^2F_{5/2}$ excited state. Based on an analysis of the spectral and laser properties of Yb$^{3+}$, it was concluded that the use of CCl$_4$–GaCl$_3$–Yb$^{3+}$ solutions as the active medium of a liquid ytterbium laser is promising.

Keywords: carbon tetrachloride, ytterbium, absorption, luminescence, lifetimes, Stark splitting, gain cross section.

Received: 12.04.2022
Revised: 30.11.2022
Accepted: 17.02.2023

DOI: 10.21883/OS.2023.03.55382.3532-22

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