Abstract

A novel all fiber cavity Yb^(3+)-doped double-clad fiber laser (DCFL) based on two double-clad fiber (DCF) Bragg grating is presented. The fiber Bragg gratings (FBGs) as the input and output mirrors have been formed in Yb^(3+)-doped DCF with the phase-mask method, and their reflectivities are 99% and 22%, respectively. When the input pump power is 417 mW, the maximum output power is 144 mW with linewidth <0.1 nm at the wavelength of 1.057 ?m, over 40-dB signal-to-noise ratio (SNR), and 50.8% slope efficiency.

© 2005 Chinese Optics Letters

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