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of 56
pro vyhledávání: '"Géneaux, Romain"'
Autor:
Guer, Matthieu, Luttmann, Martin, Hergott, Jean-François, Lepetit, Fabien, Ruchon, Olivier Tcherbakoff Thierry, Géneaux, Romain
We report on the generation of optical vortices with few-cycle pulse durations, 500$\mu$J per pulse, at a repetition rate of 1 kHz. To do so, a 25 fs laser beam at 800 nm is shaped with a helical phase and coupled into a hollow core fiber filled with
Externí odkaz:
http://arxiv.org/abs/2312.11087
Autor:
Fanciulli, Mauro, Bresteau, David, Gaudin, Jérome, Dong, Shuo, Géneaux, Romain, Ruchon, Thierry, Tcherbakoff, Olivier, Minár, Ján, Heckmann, Olivier, Richter, Maria Christine, Hricovini, Karol, Beaulieu, Samuel
Publikováno v:
Phys. Rev. Lett. 131, 066402 (2023)
We performed spin-, time- and angle-resolved extreme ultraviolet photoemission spectroscopy (STARPES) of excitons prepared by photoexcitation of inversion-symmetric 2H-WSe$_2$ with circularly polarized light. The very short probing depth of XUV photo
Externí odkaz:
http://arxiv.org/abs/2306.03610
Autor:
Chang, Hung-Tzu, Guggenmos, Alexander, Chen, Christopher T., Oh, Juwon, Géneaux, Romain, Chuang, Yi-De, Schwartzberg, Adam M., Aloni, Shaul, Neumark, Daniel M., Leone, Stephen R.
Publikováno v:
Phys. Rev. B 104, 064309 (2021)
Few-femtosecond extreme ultraviolet (XUV) transient absorption spectroscopy, performed with optical 500-1000 nm supercontinuum and broadband XUV pulses (30-50 eV), simultaneously probes dynamics of photoexcited carriers in WS$_{2}$ at the W O$_3$ edg
Externí odkaz:
http://arxiv.org/abs/2103.09965
Autor:
Géneaux, Romain, Timrov, Iurii, Kaplan, Christopher J., Ross, Andrew D., Kraus, Peter M., Leone, Stephen R.
Publikováno v:
Phys. Rev. Research 3, 033210 (2021)
In Peierls-distorted materials, photoexcitation leads to a strongly coupled transient response between structural and electronic degrees of freedom, always measured independently of each other. Here we use transient reflectivity in the extreme ultrav
Externí odkaz:
http://arxiv.org/abs/2103.03137
Attosecond transient absorption spectroscopy (ATAS) is used to observe photoexcited dynamics with outstanding time resolution. The main experimental challenge of this technique is that high-harmonic generation sources show significant instabilities,
Externí odkaz:
http://arxiv.org/abs/2010.13718
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
Autor:
Géneaux, Romain, Kaplan, Christopher J., Yue, Lun, Ross, Andrew D., Bækhøj, Jens E., Kraus, Peter M., Chang, Hung-Tzu, Guggenmos, Alexander, Huang, Mi-Ying, Zürch, Michael, Schafer, Kenneth J., Neumark, Daniel M., Gaarde, Mette B., Leone, Stephen R.
Publikováno v:
Phys. Rev. Lett. 124, 207401 (2020)
Excitation of ionic solids with extreme ultraviolet pulses creates localized core-excitons, which in some cases couple strongly to the lattice. Here, core-excitonic states of magnesium oxide are studied in the time domain at the Mg $\text{L}_{2,3}$ e
Externí odkaz:
http://arxiv.org/abs/1912.12266
Akademický článek
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Autor:
Brauße, Felix, Goldsztejn, Gildas, Amini, Kasra, Boll, Rebecca, Bari, Sadia, Bomme, Cédric, Brouard, Mark, Burt, Michael, de Miranda, Barbara Cunha, Düsterer, Stefan, Erk, Benjamin, Géléoc, Marie, Geneaux, Romain, Gentleman, Alexander S., Guillemin, Renaud, Ismail, Iyas, Johnsson, Per, Journel, Loïc, Kierspel, Thomas, Köckert, Hansjochen, Küpper, Jochen, Lablanquie, Pascal, Lahl, Jan, Lee, Jason W. L., Mackenzie, Stuart R., Maclot, Sylvain, Manschwetus, Bastian, Mereshchenko, Andrey S., Mullins, Terence, Olshin, Pavel K., Palaudoux, Jérôme, Patchkovskii, Serguei, Penent, Francis, Piancastelli, Maria Novella, Rompotis, Dimitrios, Ruchon, Thierry, Rudenko, Artem, Savelyev, Evgeny, Schirmel, Nora, Techert, Simone, Travnikova, Oksana, Trippel, Sebastian, Underwood, Jonathan G., Vallance, Claire, Wiese, Joss, Simon, Marc, Holland, David M. P., Marchenko, Tatiana, Rouzée, Arnaud, Rolles, Daniel
Due to its element- and site-specificity, inner-shell photoelectron spectroscopy is a widely used technique to probe the chemical structure of matter. Here we show that time-resolved inner-shell photoelectron spectroscopy can be employed to observe u
Externí odkaz:
http://arxiv.org/abs/1901.08937
Autor:
Géneaux, Romain
Le moment angulaire est une quantité essentielle pour l'étude d'objets en interaction. Tout comme la matière, un rayonnement porte du moment angulaire. Il se décompose en deux composantes, moment angulaire de spin (MAS) et moment angulaire orbita
Externí odkaz:
http://www.theses.fr/2016SACLS474/document