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Er: Yb fibre-optic laser excited by a diode
Zavadilová, A. ; Kubeček, V. ; Honzátko, Pavel ; Kašík, Ivan ; Matějec, Vlastimil
The paper deals with the employment of special optical fiber doped in the core with ytterbium and erbium ions in a fiber laser emitting at 1540 nm. The fiber was drawn from a preform prepared by the MCVD method at it was coated with a polysiloxane polymer coating with a refractive index lower than of silica. This coating makes possible to launch light from a laser diode directly into a silica jacket of the fiber. An output power of 47 mW was measured with an excitation diode power of 860 mW.

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