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arXiv · 1610.02179

Generation of a VUV-to-visible Raman frequency comb in hydrogen-filled kagomé photonic crystal fiber

M. K. Mridha·D. Novoa·S. T. Bauerschmidt·A. Abdolvand·P. St. J. Russell
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Abstract

We report the generation of a purely vibrational Raman comb, extending from the vacuum ultraviolet (184 nm) to the visible (478 nm), in hydrogen-filled kagomé-style photonic crystal fiber pumped at 266 nm. Stimulated Raman scattering and molecular modulation processes are enhanced by higher Raman gain in the ultraviolet. Owing to the pressure-tunable normal dispersion landscape of the fiber-gas system in the ultraviolet, higher-order anti-Stokes bands are generated preferentially in higher-order fiber modes. The results pave the way towards tunable fiber-based sources of deep- and vacuum ultraviolet light for applications in, e.g., spectroscopy and biomedicine.

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M. K. Mridha, D. Novoa, S. T. Bauerschmidt, A. Abdolvand, P. St. J. Russell. 2016-10-07. Generation of a VUV-to-visible Raman frequency comb in hydrogen-filled kagomé photonic crystal fiber. https://doi.org/10.1364/ol.41.002811

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