The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
We show how tailored few-cycle lightwaves with near relativistic intensity (∼1018W/cm2) can be used to control the attosecond electron dynamics of plasma mirrors and to produce beam manifolds of fully synchronized attosecond EUV light pulses.
An Yb:YAG SESAM-modelocked thin-disk laser delivering 1.07 ps pulses with record-high pulse energy of 80 µJ at 242 W of average power is presented. Improved SESAM designs and nonlinearity limits are explored towards multi-100 µJ modelocked oscillators.
We report efficient and robust Kerr-lens mode-locking of single-mode and tapered diode-pumped Cr:LiSAF lasers by using gain-matched output couplers. Sub-15-fs pulses were generated with peak powers above 60-kW and optical-to-optical conversion efficiencies up to 21%.
A high-efficiency continuous-wave laser-diode-pumped Yb:YAG laser has been realized at room temperature by high intensity pumping. The slope efficiency and optical-to-optical conversion efficiency were 77 % and 72 % for the absorbed pump power, respectively.
We demonstrate high gain producing 60 mJ, 200 ps pulses at 200 Hz from a single 4-mm ASE limited gain-cell. A scaling paradigm utilizing a monolithic array of gain cells is proposed.
Geometric structures of some van der Waals Complexes were determined by precisely measuring three-dimensional momentum vectors of correlated atomic ions produced in the laser-driven Coulomb explosion of these van der Waals complexes.
Multi-GeV electron acceleration of electrons using intense laser pulses that excite multi-gigavolt fields in plasmas will be discussed. Experimental results with the new BELLA PW-class lasers and supporting simulations will be presented as well as a path forward to apply this acceleration method towards practical machines.
We have demonstrated ytterbium-doped fiber lasers in 50µm-core photonic bandgap fibers with robust single mode output, a record core diameter for active photonic bandgap fibers, with slope efficiency exceeding 70%.
We present a theoretical analysis of the cavity lifetime of a superluminal laser. In contrast to the naive intuition, the lifetime is only slightly shorter than that of conventional lasers, facilitating ultra-sensitive sensors.
In this invited talk, we review our cutting research on flexible glass substrates using both laser ablation and laser crack propagation methods. The methods are evaluated in terms of cut edge quality, speed and path to manufacturing.
We demonstrated femtosecond laser ablation of PMMA using 2-color waveform synthesis. A modest and yet clear modulation in ablated area versus relative phase between the ω and 2 ω beams is observed.
A diode-pumped cryogenic Yb:YAG CPA laser that produces 1J, 5ps pulses allowed for the first time the uninterrupted generation of 1.8×105 sub-20nm wavelength laser pulses with microjoule energy at 100Hz repetition rate on a table-top.
We demonstrate theoretically and experimentally the relevance of the transversal coherence length in high-order harmonic generation (HHG). We present results in which transversal phase matching plays the leading role in the macroscopic HHG.
Laser-induced filaments can ablate solid material at distances greater than that practicably achieved through linear optics. We observed multi-scale structures on metals, polymers, and ceramics from filaments and compared to those from short-focused laser pulses.
Almost fully stripped aluminum ion acceleration up to 12 MeV/u from the interaction between the ultra-intense short pulse high contrast laser and the micrometer thick foil target is presented.
We consider SESAM soliton-modelocking via cascaded quadratic nonlinearities in the normal dispersion regime. We explain the theory, perform a design study for our experimental implementation in LiB3O5/Yb:CaGdAlO4, and present detailed numerical simulations of this laser.
Laser-wakefield-accelerated electrons were used to drive an all-optical undulator source, a 5-keV betatron X-ray source and a tunable quasi-monochromatic Compton-X-ray source. Also, we present a phase-contrast tomogram of a fly obtained with the betatron beam.
We model soft x-ray high harmonic generation and propagation driven by mid-infrared lasers. We find that multi-cycle laser pulses are ideal for generating shorter bright isolated attosecond pulses via time-gated phase-matching in high-density extended media.
Arraying fiber lasers is being focused for power and energy scaling and multicore fibers can be a promising format. Phase locking in evanescently-coupled multicore fiber lasers by various in-phase mode selection methods is presented.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.