Nonlinear effects in guided structures

Nonlinear effects in guided structures

Antiresonant hollow core fibers (ARHCF) are finding increasing applications in various fields of science and technology with their unique optical properties. This experimental work explores different properties of ARHCF like group velocity dispersion, polarization evolution of the propagating light. In-depth understanding of the novel features of ARHCF provides a new platform to study laser matter interaction in gas filled ARHCF.

Unique dispersion profile of the fiber facilitates accelerated fission process of soliton like waveforms in gas-filled ARHCF when the spectral broadening due to self-phase modulation reaches the fiber resonance wavelength. Such dynamics in a non-adiabatic dispersion regime is associated with the emission of multiple phase-matched Cherenkov radiation on both sides of the resonance, generating a multioctave-wide broadband output spectrum.

The negative curvature ARHCFs are transparent beyond the silica cut-off wavelength and can be used to generate few cycle pulses in the short-wave infrared wavelength region by pumping far from the resonance wavelength.

Responsible scientist: Rudrakant Sollapur

Cooperation:  The Leibniz Institute of Photonic Technology (IPHT) Jena, National Institute of Scientific Research (INRS) Montreal, Beijing Technological University

Funding: German-Canadian International Research Training Group (GRK-2101)