This article is cited in 3 papers

Active media for lasers

Oxotungstates of lanthanum and alkaline-earth elements as materials for neodymium powder lasers

V. F. Zolin, S. N. Vetkina, V. M. Markushev


Abstract: An investigation was made of the spectra of oxotungstates Sr_2.95(Nd, Nb)_0.025WO₆ and MeLa₂WO₇:Nd (Me = Sr, Ba) prepared in the form of powders as a result of solid-phase synthesis. Powders of BaLa₂WO₇ exhibited stimulated emission of neodymium in the region of 1.07 μm at liquid nitrogen and helium temperatures, as demonstrated by a strong narrowing of the luminescence spectrum and a threshold. A characteristic "pedestal cutoff" dependent on the pump power was observed in the excitation spectra of the luminescence. A study of the luminescence and luminescence-excitation spectra of europium oxotungstates was carried out in order to obtain more detailed information on the structure of the luminescence centers.

PACS: 42.55.Rz, 42.70.Hj, 78.55.Hx, 78.45.+h

Received: 01.07.1987

 English version: Soviet Journal of Quantum Electronics, 1988, 18:2, 204–206

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