Robust excitation and Raman conversion of guided vortices in chiral gas-filled photonic crystal fiber

24 Feb 2020 Davtyan S. Chen Y. Frosz M. H. Russell P. ST. J. Novoa D.

The unique ring-shaped intensity patterns and helical phase fronts of optical vortices make them useful in many applications. Here we report for the first time efficient Raman frequency conversion between vortex modes in twisted hydrogen-filled single-ring hollow core photonic crystal fiber (SR-PCF)... (read more)

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