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arXiv · 1903.12103

High-energy ultraviolet dispersive-wave emission in compact hollow capillary systems

Christian Brahms·Teodora Grigorova·Federico Belli·John C. Travers
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Abstract

We demonstrate high-energy resonant dispersive-wave emission in the deep ultraviolet (218 to 375 nm) from optical solitons in short (15 to 34cm) hollow capillary fibres. This down-scaling in length compared to previous results in capillaries is achieved by using small core diameters (100 and 150 $μ$m) and pumping with 6.3 fs pulses at 800 nm. We generate pulses with energies of 4 to 6 $μ$J across the deep ultraviolet in a 100 $μ$m capillary and up to 11 $μ$J in a 150 $μ$m capillary. From comparisons to simulations we estimate the ultraviolet pulse to be 2 to 2.5 fs in duration. We also numerically study the influence of pump duration on the bandwidth of the dispersive wave.

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Christian Brahms, Teodora Grigorova, Federico Belli, John C. Travers. 2019-07-04. High-energy ultraviolet dispersive-wave emission in compact hollow capillary systems. https://doi.org/10.1364/ol.44.002990

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