Zobrazeno 1 - 10
of 189
pro vyhledávání: '"Legare, Francois"'
Autor:
Lytova, Marianna, Fillion-Gourdeau, François, Vallières, Simon, Fourmaux, Sylvain, Légaré, François, MacLean, Steve
Recent experimental and theoretical results have demonstrated the possibility of accelerating electrons in the MeV range by focusing tightly a few-cycle laser beam in ambient air. Using Particle-In-Cell (PIC) simulations, this configuration is revisi
Externí odkaz:
http://arxiv.org/abs/2408.09052
Autor:
Heberle, Dylan, Flemens, Noah, Davis, Connor, Lassonde, Philippe, Leblanc, Adrien, Légaré, François, Moses, Jeffrey
Dispersion management of few-cycle pulses is crucial for ultrafast optics and photonics. Often, nontrivial dispersion is compensated using complex optical systems or minimized through careful design of waveguides. Here, we present dispersion-managed
Externí odkaz:
http://arxiv.org/abs/2405.17679
Relativistic electrons from vacuum laser acceleration using tightly focused radially polarized beams
Autor:
Powell, Jeffrey, Jolly, Spencer W., Vallières, Simon, Fillion-Gourdeau, François, Payeur, Stéphane, Fourmaux, Sylvain, Piché, Michel, Ibrahim, Heide, MacLean, Steve, Légaré, François
We generate a tabletop pulsed relativistic electron beam at 100 Hz repetition rate from vacuum laser acceleration (VLA) by tightly focusing a radially polarized beam into a low-density gas. We demonstrate that strong longitudinal electric fields at t
Externí odkaz:
http://arxiv.org/abs/2402.08009
Autor:
Biswas, Shubhadeep, Trabattoni, Andrea, Rupp, Philipp, Magrakvelidze, Maia, Madjet, Mohamed El-Amine, De Giovannini, Umberto, Castrovilli, Mattea C., Galli, Mara, Liu, Qingcao, Månsson, Erik P., Schötz, Johannes, Wanie, Vincent, Légaré, François, Wnuk, Pawel, Nisoli, Mauro, Rubio, Angel, Chakraborty, Himadri S., Kling, Matthias F., Calegari, Francesca
Fullerenes have unique physical and chemical properties that are associated with their delocalized conjugated electronic structure. Among them, there is a giant ultra-broadband - and therefore ultrafast - plasmon resonance, which for C$_{60}$ is in t
Externí odkaz:
http://arxiv.org/abs/2111.14464
Autor:
Singh, Mangaljit, Fareed, Muhammad Ashiq, Shirinabadi, Ramin Ghahri, Marcelino, Romain, Zhu, Feng, Légaré, François, Ozaki, Tsuneyuki
Publikováno v:
In Fundamental Plasma Physics June 2024 10
Autor:
Abdolghader, Pedram, Ridsdale, Andrew, Grammatikopoulos, Tassos, Resch, Gavin, Legare, Francois, Stolow, Albert, Pegoraro, Adrian F., Tamblyn, Isaac
Hyperspectral stimulated Raman scattering (SRS) microscopy is a label-free technique for biomedical and mineralogical imaging which can suffer from low signal to noise ratios. Here we demonstrate the use of an unsupervised deep learning neural networ
Externí odkaz:
http://arxiv.org/abs/2104.08338
Autor:
Müller, Michael, Aleshire, Christopher, Klenke, Arno, Haddad, Elissa, Légaré, François, Tünnermann, Andreas, Limpert, Jens
An ultrafast laser delivering 10.4 kW average output power based on coherent combination of twelve stepindex fiber amplifiers is presented. The system emits close-to-transform-limited 254 fs pulses at 80 MHz repetition rate, has a high beam quality (
Externí odkaz:
http://arxiv.org/abs/2101.08501
Autor:
Mansson, Erik P., Latini, Simone, Covito, Fabio, Wanie, Vincent, Galli, Mara, Perfetto, Enrico, Stefanucci, Gianluca, Huebener, Hannes, De Giovannini, Umberto, Castrovilli, Mattea C., Trabattoni, Andrea, Frassetto, Fabio, Poletto, Luca, Greenwood, Jason B., Legare, Francois, Nisoli, Mauro, Rubio, Angel, Calegari, Francesca
Sudden ionisation of a relatively large molecule can initiate a correlation-driven process dubbed charge migration, where the electron density distribution is expected to rapidly change. Capturing this few-femtosecond/attosecond charge redistribution
Externí odkaz:
http://arxiv.org/abs/2101.05753
Autor:
Geib, Nils C., Hollinger, Richard, Haddad, Elissa, Herrmann, Paul, Légaré, François, Pertsch, Thomas, Spielmann, Christian, Zürch, Michael, Eilenberger, Falk
In this work, we demonstrate a discrete dispersion scan scheme using a low number of flat windows to vary the dispersion of laser pulses in discrete steps. Monte Carlo simulations indicate that the pulse duration can be retrieved accurately with less
Externí odkaz:
http://arxiv.org/abs/2004.12145
Autor:
Beaulieu, Samuel, Comby, Antoine, Clergerie, Alex, Caillat, Jérémie, Descamps, Dominique, Dudovich, Nirit, Fabre, Baptiste, Géneaux, Romain, Légaré, François, Petit, Stéphane, Pons, Bernard, Porat, Gil, Ruchon, Thierry, Taïeb, Richard, Blanchet, Valérie, Mairesse, Yann
Publikováno v:
Science 358, 1288-1294 (2017)
Chiral light-matter interactions have been investigated for two centuries, leading to the discovery of many chiroptical processes used for discrimination of enantiomers. Whereas most chiroptical effects result from a response of bound electrons, phot
Externí odkaz:
http://arxiv.org/abs/2004.05010