HISOL

Funded by: ERC

High-energy soliton dynamics in hollow capillary fibres for self-compression and deep and vacuum ultraviolet pulse generation

Optical soliton dynamics can cause the extreme alteration of the temporal and spectral shape of a propagating light pulse. For example they can be used for temporal self-compression and are the basis of a multitude of routes to supercontinuum generation. They occur at up to kilowatt peak powers in glass-core optical fibres and the gigawatt level in gas-filled microstructured hollow-core fibres.

The goal of the HISOL project is to understand and demonstrate optical soliton dynamics in large-core hollow capillary fibres (HCF). This enables scaling of soliton effects by several orders of magnitude to the multi-mJ energy and terawatt peak power level.

So far we have experimentally demonstrated two key soliton effects. First, we have obtained self-compression to sub-cycle pulses and infered the creation of high-power sub-femtosecond field waveforms, sometimes refered to as optical attosecond pulses.

Soliton self-compression of a 10 fs pump pulse down to 1.2 fs (envelope duration) or 412 attoseconds (field transient) as the pump energy is increased in a 3 m long, 250 μm diameter, helium-filled HCF.

Second, we efficiently generated continuously tunable high-energy pulses in the vacuum and deep ultraviolet (110 nm to 400 nm) through resonant dispersive-wave emission. We have used our numerical modelling to infer the duration of the VUV pulses to be around 2 fs, which means that they have the highest peak power, and hence highest brightness, of any continuously tunable VUV source yet demonstrated. In fact our table-top VUV source has a higher brightness than kilometre scale free-electron lasers.

Soliton-driven resonant dispersive-wave emission of tuneable ultrashort (2 fs) pulses from 110 nm to 350 nm, in a 3 m long, 250 μm diameter, helium-filled HCF.

These results promise to be the foundation of a new generation of table-top light sources for ultrafast strong-field physics and advanced spectroscopy.

HISOL is funded by the European Research Council under the European Union’s Horizon 2020 research and innovation programme (ERC starting grant agreement No 679649).

Publications

We demonstrate high-energy resonant dispersive-wave emission in the deep ultraviolet (218 to 375 nm) from optical solitons in short (15 …

Optical soliton dynamics can cause extreme alteration of the temporal and spectral shape of a propagating light pulse. This occurs at …

Talks

We experimentally investigate the different regimes of optical nonlinear dynamics that can be accessed in hollow capillary fibres by …

We demonstrate soliton self-compression and VUV dispersive-wave emission in argon- and krypton-filled hollow capillary fibre. We …

We demonstrate that by using short (5-7 fs) driving pulses, optical soliton dynamics can be obtained in hollow capillary fibres less …

We demonstrate soliton self-compression of 0.3 mJ pulses to 2.7 fs in a 3 m long gas-filled hollow capillary fibre. Scaling to higher …

Optical soliton dynamics in a waveguide can cause the extreme alteration of the temporal and spectral shape of a propagating light …