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2008•Chinese Physics LettersOpen access

LD-pumped 6W cw Tm 3+ -Doped Silica Double-Cladding Fibre Laser

Geguo Du, LI Da-Jun, Min Zhang, Peiguang Yan, Chen Li-Cheng, Zhou Yao Hua, Ruan Shuang-Chen

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Abstract

We report a thulium-doped silica fibre laser that generates a maximum cw output power of 6W in a 2μm wavelength range when cladding-pumped by a laser diode (LD) operating at approximately 791 nm at room temperature. The slope efficiency with respect to the launched pump power is 50% and 38.4%, with and without an output coupler mirror, respectively. The corresponding thresholds are 2.8 W and 4.8 W, respectively. The beam qualities M x 2 and M y 2 are 1.26 and 1.32, respectively. The experimental results are also analysed.

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What this paper is about

We report a thulium-doped silica fibre laser that generates a maximum cw output power of 6W in a 2μm wavelength range when cladding-pumped by a laser diode (LD) operating at approximately 791 nm at room temperature. The slope efficiency with respect to the launched pump power is 50% and 38.4%, with and without an output coupler mirror, respectively. The corresponding thresholds are 2.8 W and 4.8 W, respectively. The beam qualities M x 2 and M y 2 are 1.26 and 1.32, respectively. The experimental results are also analysed.

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Available abstract

We report a thulium-doped silica fibre laser that generates a maximum cw output power of 6W in a 2μm wavelength range when cladding-pumped by a laser diode (LD) operating at approximately 791 nm at room temperature. The slope efficiency with respect to the launched pump power is 50% and 38.4%, with and without an output coupler mirror, respectively. The corresponding thresholds are 2.8 W and 4.8 W, respectively. The beam qualities M x 2 and M y 2 are 1.26 and 1.32, respectively. The experimental results are also analysed.

Key concepts: Materials science, Cladding (metalworking), Doping, Laser, Fiber laser, Optics, Optoelectronics, Composite material

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