Abdul Khudus, Muhammad, Wang, Yun, De Lucia, Francesco, He, Jing, Beresna, Martynas, Sazio, Pier-John, Horak, Peter, Chiodini, Norberto and Brambilla, Gilberto
UV generation in silica optical fibres: from rare earth doping to nonlinear optics in nanofibers
At EMN workshop on Optoelectronics.
12 - 15 Apr 2016.
UV generation in optical fibres has long been deemed challenging because of lack of suitable lasing ions in the UV and the poor transparency of germanosilicate fibres at wavelengths shorter than lambda =400nm.
In our experiments, optical fibres with pure silica core and fluorosilicate cladding have been used, providing a loss smaller than 1dB/m at lambda <300nm. Two different techniques were used to achieve light generation at lambda <400nm: nonlinear optics in tapered optical fibres with sub-micrometric diameter (nanofibers) and doping with rare-earths.
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