I. A. Bufetov, V. V. Dudin, A. V. Shubin, A. K. Senatorov, E. M. Dianov, A. B. Grudinin, S. E. Goncharov, I. D. Zalevskii, A. N. Gur'yanov, M. V. Yashkov, A. A. Umnikov, N. N. Vechkanov, “Efficient 0.9-μm neodymium-doped single-mode fibre laser”, Kvantovaya Elektronika, 2003, Volume 33, Number 12,Pages <nobr>1035

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Letters

Efficient 0.9-μm neodymium-doped single-mode fibre laser

I. A. Bufetov^a, V. V. Dudin^a, A. V. Shubin^a, A. K. Senatorov^a, E. M. Dianov^a, A. B. Grudinin^b, S. E. Goncharov^c, I. D. Zalevskii^d, A. N. Gur'yanov^e, M. V. Yashkov^e, A. A. Umnikov^e, N. N. Vechkanov^e

^a Fiber Optics Research Center of the Russian Academy of Sciences, Moscow
^b Fianium-New Optics Ltd, UK
^c Milon Laser, St. Petersburg
^d Polyus Research and Development Institute named after M. F. Stel'makh, Moscow
^e Institute of Chemistry of High-Purity Substances RAS, Nizhnii Novgorod

Abstract: An efficient cw single-mode double-clad Nd³⁺-doped fibre laser is developed which operates at room temperature in a quasi-three level scheme on the 925-nm ⁴F_3/2 – ⁴I_9/2 transition upon diode pump at 805 nm. The gain in the laser resonator at 1.06 μm is strongly suppressed due to a proper choice of the refractive index profile in the fibre core. The laser output power above 0.5 W is obtained with the slope efficiency exceeding 35%.

PACS: 42.55.Wd, 42.60.Lh

Received: 29.10.2003