This article is cited in 26 papers

Lasers and laser media

25%Eu:KGd(WO₄)₂ laser crystal: spectroscopy and lasing on the ⁵D₀→⁷F₄ transition

S. N. Bagayev^a, V. I. Dashkevich^b, V. A. Orlovich^b, S. M. Vatnik^a, A. A. Pavlyuk^c, A. M. Yurkin<sup>d

a</sup> Institute of Laser Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk
^b B. I. Stepanov Institute of Physics, National Academy of Sciences of Belarus, Minsk
^c Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, Novosibirsk
^d Sobolev Institute of Geology and Mineralogy, Siberian Branch of the Russian Academy of Sciences, Novosibirsk

Abstract: 25%Eu:KGd(WO₄)₂ crystal is grown by a modified Czochralski method and its spectral and lasing properties are studied. Generation of stimulated emission in this crystal on the ⁵D₀→⁷F₄ transition of the Eu³⁺ ion is obtained, as far as we know, for the first time. The laser operates at room temperature at a wavelength of ~703 nm under pumping into the ⁷F₀→⁵D₁ absorption band of the europium ion by the second harmonic of a Q-switched Nd:KGW laser (λ_pump= 533.6 nm). With a 9.4-mm-long active element, the output energy in the free-running regime reached 244 μJ, while the optical efficiency was 1.5%.

PACS: 42.55.Rz, 42.70.Hj, 32.50.+d

Received: 20.11.2010

 English version: Quantum Electronics, 2011, 41:3, 189–192

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