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Lasing threshold of one- and two-photon-pumped dye-doped silica powder

AuthorsGarcía-Ramiro, Begoña; Illarramendi, María A.; García-Revilla, Sara; Balda, Rolindes ; Levy, David ; Zayat, Marcos ; Fernández, Joaquín
Issue Date2014
CitationApplied Physics B 117(4): 1135-1140 (2014)
AbstractThe random laser features around threshold in a ground powder of a silica gel containing Rhodamine 6G-doped silica nanoparticles under one- and two-photon excitation are analyzed. The lasing threshold following two-photon pumping is fifty times higher than after one-photon excitation. Theoretical calculations by using a light diffusive propagation model are in agreement with the experimental results.
Identifiersdoi: 10.1007/s00340-014-5936-5
issn: 0946-2171
e-issn: 1432-0649
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