We present the use of a linearly down-tapered gas-filled hollow-core photonic crystal fiber in a single stage, pumped with pulses from a compact infrared (IR) laser source, to generate a supercontinuum (SC) carrying significant spectral power in the deep ultraviolet (UV) [200-300 nm]. The generated SC extends from the near IR down to ∼213 with 0.58 mW/nm and down to ∼220 with 0.83 mW/nm in the deep UV.

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http://dx.doi.org/10.1364/OL.435697DOI Listing

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