This article is cited in 16 papers

Lasers

Effect of the active-ion concentration on the lasing dynamics of holmium fibre lasers

A. S. Kurkov^a, E. M. Sholokhov^a, A. V. Marakulin^b, L. A. Minashina<sup>b

a</sup> Prokhorov General Physics Institute of the Russian Academy of Sciences, Moscow
^b Russian Federal Nuclear Center E. I. Zababakhin All-Russian Scientific Research Institute of Technical Physics, Snezhinsk

Abstract: The lasing dynamics of fibre lasers with a core based on quartz glass doped with holmium ions to concentrations in the range of 10¹⁹-10²⁰ cm^-3 is investigated. It is shown that fibre lasers with a high concentration of active holmium ions generate pulses, but a decrease in the holmium concentration changes the lasing from pulsed to cw regime. At the same time, a decrease in the active-ion concentration and the corresponding increase in the fibre length in the cavity reduce the lasing efficiency.

PACS: 42.55.Wd, 42.60.Pk, 42.60.Rn

Received: 13.09.2010

 English version: Quantum Electronics, 2010, 40:10, 858–860

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