K. Ferencz

TL;DR: High-energy 20-fs pulses generated by a Ti:sapphire laser system were spectrally broadened to more than 250 nm by self-phase modulation in a hollow fiber filled with noble gases and subsequently compressed in a broadband high-throughput dispersive system, resulting in the shortest generated to date at multigigawatt peak powers.

TL;DR: Optical thin-film structures exhibiting high reflectivity and a nearly constant negative group-delay dispersion over frequency ranges as broad as 80 THz are presented, making these coatings well suited for intracavity dispersion control in broadband femtosecond solid-state lasers.

TL;DR: In this paper, a compact all-solid-state femtosecond Ti:sapphire oscillator-amplifier system using no grating-based pulse stretcher produces 20-fs, 1.5mJ pulses at a 1-kHz repetition rate.

TL;DR: In this paper, the single-atom quantum theory of high-order harmonic generation combined with Maxwell's wave equation provides a satisfactory account for the experimental observations, and the sub-10-fs laser pulse duration was found to be crucial for generating radiation with the highest photon energies at the low ( $l 0.5\mathrm{mJ}$) pump energy levels used in the experiments.

TL;DR: In this article, the state of the art of mirror-dispersion-controlled (MDC) Ti:sapphire laser oscillators is reviewed. And the authors report on recent progress in MDC Ti:S oscillator technology, which has permitted the generation of femtosecond pulses with peak powers exceeding 1 MW for the first time directly from a laser oscillator.