Abstract

We report UV four-wave mixing in the ${\mathrm{LP}}_{02}$ mode of a photonic crystal fiber when pumped by a frequency-doubled 532 nm microchip laser in the normal dispersion regime. A pure ${\mathrm{LP}}_{02}$ mode was generated for the pump light by a broadband all-fiber mode converter. Ultraviolet signal wavelengths as short as 342 nm were generated.

© 2013 Optical Society of America

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