A. S. Kurkov, E. M. Sholokhov, V. B. Tsvetkov, A. V. Marakulin, L. A. Minashina, O. I. Medvedkov, A. F. Kosolapov, “Holmium fibre laser with record quantum efficiency”, Kvantovaya Elektronika, 2011, Volume 41, Number 6,Pages <nobr>492

This article is cited in 33 papers

Lasers

Holmium fibre laser with record quantum efficiency

A. S. Kurkov^a, E. M. Sholokhov^a, V. B. Tsvetkov^a, A. V. Marakulin^b, L. A. Minashina^b, O. I. Medvedkov^c, A. F. Kosolapov^c

^a 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
^c Fiber Optics Research Center of the Russian Academy of Sciences, Moscow

Abstract: We report holmium-doped fibre lasers with a Ho³⁺ concentration of 1.6 × 10¹⁹ cm^-3 and lasing wavelengths of 2.02, 2.05, 2.07 and 2.1 μm at a pump wavelength of 1.15 μm. The slope efficiency of the lasers has been measured. The maximum efficiency, 0.455, has been obtained at a lasing wavelength of 2.05 μm. The laser efficiency is influenced by both the optical loss in the wing of a vibrational absorption band of silica and active-ion clustering.

PACS: 42.55.Wd, 42.60.Lh

Received: 17.02.2011
Revised: 01.04.2011