Orthorombic Yb:Li2Zn2(MoO4)3 ¿ A novel potential crystal for broadly tunable lasers

Identifier:  PC:3318

Handle: https://hdl.handle.net/20.500.11797/PC3318

Authors:  Mateos, X.; Kurilchik, S.; Loiko, P; Yasukevich, A.; Trifonov, V.; Volokitina, A.; Vilejshikova, E.; Kisel, V.; Baranov, A.; Goriev, O.; Kuleshov, N.; Pavlyuk, A.

Abstract:
Crystal with composition Li2Zn2(MoO4)3 doped with 0.7 at.% Yb (Yb:LiZnMo), with high optical quality and few cm long is grown from the flux using Li2MoO4 as a solvent. Yb:LiZnMo is orthorombic (sp. gr. Pnma, a = 5.0843 Å, b = 10.4927 Å, c = 17.6742 Å, Z = 4). Polarized Raman spectra are studied for this crystal; the most intense band is observed at 898 cm-1. The ab-sorption, stimulated-emission and gain cross-sections of Yb3+ ions are deter-mined for the principal light polarizations, E || a, b, c. The maximum ¿SE = 6.6×10-21 cm2 at 1011 nm for E || b. The gain bandwidth for Yb:LiZnMo is up to ~50 nm. The radiative lifetime of the Yb3+ ions is 1.55 ms. The Yb:LiZnMo crystals are very promising for broadly tunable lasers.