Pruneri, V. and Kazansky, P.G.
Frequency doubling of picosecond pulses in periodically poled D-shape silica fibre
At Conference on Lasers and Electro-Optics (CLEO '97), United States.
18 - 23 May 1997.
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D-shape silica fibres have been periodically poled at elevated temperature by applying high voltage via a patterned electrode deposited on the plane side. The resulting nonlinear grating of 25µm period, uniform over the whole 1.8cm length, has been used for quasi-phase-matched second harmonic generation. With a mode-locked laser as fundamental source blue powers up to ~76µW have been generated at ~422nm with an average conversion efficiency of ~0.22%.
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