Abstract
We demonstrate a new all-fiber laser with Yb-doped double-cladding microstructure optical fiber (MOF) that is fabricated through non-chemical vapor deposition (Non-CVD) technology. In our experiments, both of the seed laser and amplifier are made of the same kind of Yb-doped MOF by spatial light coupling method. The amplifier output power is 5.03W with a one-stage amplifier when the seed laser power is 1.07W. The signal power is amplified about five times. These results can provide motivation for the application of Yb-doped MOF. It indicates that all microstructure optical fiber laser has the great potential to provide enormous output power scaling.
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