Radially-polarized beams have attracted growing interest for a variety of applications including, laser processing of materials, high-resolution microscopy and particle manipulation due to their unique properties. Recently, we have demonstrated efficient generation of radially-polarization from an Yb-doped fibre laser in the one-micron band based on the use of a nanograting spatially-variant half-waveplate (S-waveplate) as an intracavity polarization-controlling element [1].

© 2015 IEEE

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