Hartmut Bartelt

TL;DR: The first detailed demonstrations of octave-spanning SC generation in all-normal dispersion photonic crystal fibers (ANDi PCF) in the visible and near-infrared spectral regions are presented, presenting the broadest spectra generated in the normal dispersion regime of an optical fiber.

TL;DR: This work experimentally investigates light propagation in a disordered two-dimensional array of mutually coupled optical fibers, finding that fields, which are localized in the linear regime, can experience both spreading and contraction caused by the nonlinearity.

TL;DR: In this paper, the first experimental observation of three-dimensional light bullets, excited by femtosecond pulses in a system featuring quasi-instantaneous cubic nonlinearity and a periodic, transversally modulated refractive index was reported.

TL;DR: The combination of fiber Bragg grating inscription with femtosecond laser sources and the usage of the Talbot interferometer setup not only gives access to the fabrication of Bragg gratings in new types of materials but also allows, at the same time, to keep the high flexibility of an interferometric setup in choosing the Bragggrating wavelength.

TL;DR: Numerical simulations in excellent agreement with the experimental results are used to discuss the scalability of the concept to the single-cycle regime employing active phase shaping, and it is shown that previously reported limits to few-cycle pulse generation from compression of SC spectra generated in conventional PCF possessing one or more zero dispersion wavelengths do not apply for ANDi PCF.