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Abstract:
We present the use of a linearly down-tapered gas-filled hollow-core photonic crystal fiber in a single stage, pumped with pulses froma 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 similar to 213 nm with 0.58 mW/nm and down to similar to 220 nm with 0.83 mW/nm in the deepUV. (C) 2021 Optical Society of America