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

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 $\mu$m) and pumping with 6.3 fs pulses at 800 nm. We generate pulses with energies of 4 to 6 $\mu$J across the deep ultraviolet in a 100 $\mu$m capillary and up to 11 $\mu$J in a 150 $\mu$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.

5 pages, 3 figures

References in corpus (1)

• Generation of micro-J pulses in the deep UV at MHz repetition rates

Cited by in corpus (6)

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• Dispersion-tuning of nonlinear optical pulse dynamics in gas-filled hollow capillary fibers
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• Highly efficient DUV generation at 100 kHz via Yb pumped four-wave mixing in stretched hollow-core fibers
• The effect of nonlinear lensing on the coupling of ultrafast laser pulses to hollow-core waveguides