This article is cited in 9 papers

Control of laser radiation parameters

Dependence of the spectral parameters of a Raman fibre laser on the Bragg grating temperature

S. A. Babin^a, A. S. Kurkov^b, V. V. Potapov^a, D. V. Churkin<sup>a

a</sup> Institute of Automation and Electrometry, Siberian Branch of Russian Academy of Sciences, Novosibirsk
^b Fiber Optics Research Center of the Russian Academy of Sciences, Moscow

Abstract: Changes in the output power and emission spectrum of a two-stage Raman phosphosilicate fibre laser are measured during the temperature tuning of fibre Bragg gratings (FBGs) forming enclosed resonators (1.26/1.52 μm). The output emission spectrum of the dense resonator (1.26 μm) is split into two components, whose relative amplitudes change during the temperature tuning of FBGs. A simple analytic model is constructed which describes the broadening and splitting of the spectrum as well as the appearance of its asymmetry upon the relative detuning of FBGs. It is shown that these effects result in the increase in the effective transmission coefficient of the dense resonator at least by an order of magnitude, which affects the output power of the Raman laser.

PACS: 42.55.Wd, 42.55.Ye, 42.65.Dr, 42.60.Da

Received: 20.03.2003

 English version: Quantum Electronics, 2003, 33:12, 1096–1100

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