Judd-Ofelt analysis and stimulated-emission cross-sections for highly doped (38 at%) Er:YSGG laser crystal

Identifier:  imarina:9282588

Handle: https://hdl.handle.net/20.500.11797/imarina9282588

Authors:  Loiko, P A; Arbabzadah, E A; Damzen, M J; Mateos, X; Dunina, E B; Kornienko, A A; Yasukevich, A S; Skoptsov, N A; Yumashev, K V

Abstract:
Stimulated-emission cross-section spectra are determined for the ~1.5 ?m and 3 ?m transitions of Er3+ ions in YSGG crystal. For the 4I11/2?4I13/2 channel, the maximum stimulated-emission cross-section ?SE is 0.43×10-20 cm2 at 2797.1 nm. For the 4I13/2?4I15/2 channel, ?SE=1.20×10-20 cm2 at 1532.8 nm. Due to the reabsorption loss, laser operation is expected at ~1644 nm. Radiative lifetimes of all excited states of the Er3+ ion from 4I13/2 to 2H9/2 and probabilities of radiative transitions from these states are determined using the Judd-Ofelt theory. Radiative lifetimes of the 4I13/2 and 4I11/2 excited states for Er3+ ions in YSGG are 7.73 ms and 9.75 ms, respectively. Non-radiative decay is analyzed for lower excited-states of Er3+ ions in YSGG. © 2015 Elsevier B.V. All rights reserved.