Novel approach for single-ended operation of a cladding-pumped fibre laser |
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Authors: | L Pearson JSP Chan P Wang JK Sahu WA Clarkson |
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Institution: | 1.Optoelectronics Research Centre,University of Southampton,Southampton,UK |
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Abstract: | We report on the periodic polarization of α-phase proton- exchanged LiNbO3 planar waveguides down to 5 μm period lengths using structured electrodes and electrical fields. Unlike a majority of previous
work, room-temperature electric field poling has been carried out after waveguide fabrication. Chemical etching of the large
guiding surface has revealed homogeneous and high-quality domains with duty cycles close to 0.5. Moreover, it was verified
by diffraction techniques and etching that the domain structure is preserved more than 2 μm along the thickness of the waveguide.
The excellent optical performances of single-domain α-phase waveguides were not affected by the periodic poling. |
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