Abstract
Recently, periodically patterned second order nonlinearities have been created in optical fibres by thermal poling in vacuo and cw quasi-phase-matched frequency conversion to the blue has been demonstrated [1]. The maximum blue light power detected was ~400 pW. corresponding to a fundamental power in the fibre of ~100 mW. Here we report recent developments in cw blue light generation in poled optical fibres. An increase of a factor ~10 in the conversion efficiency in comparison with the previous results has been obtained.
© 1996 IEEE
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