21. Photoelectric effect with a twistGiovanni De Ninno, Jonas Wätzel, Primož Rebernik Ribič, Enrico Allaria, Marcello Coreno, Miltcho B. Danailov, Christian David, Alexander Demidovich, Michele Di Fraia, Luca Giannessi, Klaus Hansen, Špela Krušič, Michele Manfredda, Micheal Meyer, Andrej Mihelič, Najmeh Mirian, Oksana Plekan, Barbara Ressel, Benedikt Rösner, Alberto Simoncig, Simone Spampinati, Janez Štupar, Matjaž Žitnik, Marco Zangrando, Carlo Callegari, Jamal Berakdar, 2020, izvirni znanstveni članek Opis: Photons have fixed spin and unbounded orbital angular momentum (OAM). While the former is manifested in the polarization of light, the latter corresponds to the spatial phase distribution of its wavefront1. The distinctive way in which the photon spin dictates the electron motion upon light– matter interaction is the basis for numerous well-established spectroscopies. By contrast, imprinting OAM on a mat- ter wave, specifically on a propagating electron, is gener- ally considered very challenging and the anticipated effect undetectable2. In refs. 3,4, the authors provided evidence of OAM-dependent absorption of light by a bound electron. Here, we seek to observe an OAM-dependent dichroic photo- electric effect, using a sample of He atoms. Surprisingly, we find that the OAM of an optical field can be imprinted coher- ently onto a propagating electron wave. Our results reveal new aspects of light–matter interaction and point to a new kind of single-photon electron spectroscopy. Ključne besede: FEL, OAM, Photoelectric effect Objavljeno v RUNG: 09.09.2020; Ogledov: 2883; Prenosov: 0 Gradivo ima več datotek! Več... |
22. Coupling of autoionizing states by a chirped laser pulseMatjaž Žitnik, Andrej Mihelič, Klemen Bučar, Mateja Hrast, Žiga Barba, Špela Krušič, Primož Rebernik Ribič, Jurij Urbančič, Barbara Ressel, Matija Stupar, David Gauthier, Giovanni De Ninno, 2020, objavljeni povzetek znanstvenega prispevka na konferenci Opis: We have observed the autoionization of the laser-coupled 2s2p 1Po and 2p2 1Se resonances in helium. The ions were collected while varying the frequency and delay of the extreme-ultraviolet (EUV) excitation pulse with respect to the linearly chirped visible (VIS) laser pulse. From the measured frequency-delay map the Autler- Townes splitting, the EUV-VIS cross-correlation and the linear chirp parameter were extracted. Ključne besede: High Harmonic Generation Objavljeno v RUNG: 29.06.2020; Ogledov: 3115; Prenosov: 0 Gradivo ima več datotek! Več... |
23. Spectrotemporal control of soft x-ray laser pulsesNajmeh S. Miria, Enrico Allaria, Niky Bruchon, Paolo Cinquegrana, Miltcho Bojanov Danailov, Giovanni De Ninno, S. Di Mitri, Eugenio Ferrari, Luca Giannessi, Primož Rebernik Ribič, 2020, izvirni znanstveni članek Ključne besede: coherent control, free electron lasers, echo-enabled harmonic generation Objavljeno v RUNG: 15.06.2020; Ogledov: 2918; Prenosov: 79 Povezava na celotno besedilo |
24. Status and perspectives of the FERMI FEL facility (2019)Luca Giannessi, Enrico Allaria, Laura Badano, S. Bassanese, Filippo Bencivenga, Carlo Callegari, Flavio Capotondi, Davide Castronovo, F. Cilento, Paolo Cinquegrana, Giovanni De Ninno, Primož Rebernik Ribič, 2019, objavljeni znanstveni prispevek na konferenci Ključne besede: free-electron lasers, harmonic generation Objavljeno v RUNG: 15.01.2020; Ogledov: 3031; Prenosov: 94 Povezava na celotno besedilo Gradivo ima več datotek! Več... |
25. User operation of sub-picosecond thz coherent transition radiation parasitic to a VUV FELS. Di Mitri, N. Adhlakha, Enrico Allaria, Laura Badano, Giovanni De Ninno, P. Di Pietro, G. Gaio, Luca Giannessi, G. Penco, A. Perucchi, Primož Rebernik Ribič, 2019, objavljeni znanstveni prispevek na konferenci Ključne besede: free-electron lasers, coherent transition radiation, electron beam manipulation Objavljeno v RUNG: 15.01.2020; Ogledov: 3016; Prenosov: 86 Povezava na celotno besedilo Gradivo ima več datotek! Več... |
26. First lasing of a free electron laser in the soft x-ray spectral range with echo enabled harmonic generationEnrico Allaria, Alessandro Abrami, Laura Badano, Maurizio Bossi, Flavio Capotondi, Davide Castronovo, Marco Cautero, Paolo Cinquegrana, Ivan Cudin, M. B. Danailov, Primož Rebernik Ribič, Giovanni De Ninno, 2019, objavljeni znanstveni prispevek na konferenci Ključne besede: free-electron lasers, harmonic generation Objavljeno v RUNG: 15.01.2020; Ogledov: 2949; Prenosov: 91 Povezava na celotno besedilo |
27. Beyond the limits of 1D coherent synchrotron radiationA. D. Brynes, P. Smorenburg, I. Akkermans, Enrico Allaria, Laura Badano, S. Brussaard, M. B. Danailov, Alexander Demidovich, Giovanni De Ninno, David Gauthier, Primož Rebernik Ribič, 2018, izvirni znanstveni članek Ključne besede: coherent synchrotron radiation, free electron lasers, accelerators Objavljeno v RUNG: 14.01.2020; Ogledov: 3211; Prenosov: 79 Povezava na celotno besedilo |
28. Pulse duration of seeded free-electron lasersPaola Finetti, Hauke Höppner, Enrico Allaria, Carlo Callegari, Flavio Capotondi, Paolo Cinquegrana, Marcello Coreno, Riccardo Cucini, Miltcho Bojanov Danailov, Alexander Demidovich, Giovanni De Ninno, Primož Rebernik Ribič, 2017, izvirni znanstveni članek Ključne besede: free-electron lasers, harmonic generation, pulse duration Objavljeno v RUNG: 14.01.2020; Ogledov: 3025; Prenosov: 13 Povezava na celotno besedilo |
29. High resolution beam profiling of X-ray free electron laser radiation by polymer imprint developmentBenedikt Rösner, Florian Döring, Primož Rebernik Ribič, David Gauthier, Emiliano Principi, Claudio Masciovecchio, Marco Zangrando, Joan Vila-Comamala, Giovanni De Ninno, Christian David, 2017, izvirni znanstveni članek Ključne besede: free-electron lasers, metrology, polymers, X-ray optics Objavljeno v RUNG: 13.01.2020; Ogledov: 3016; Prenosov: 0 |
30. Echo-enabled harmonic generation studies for the FERMI free-electron laserPrimož Rebernik Ribič, Eléonore Roussel, Gregory Penn, Giovanni De Ninno, Luca Giannessi, G. Penco, Enrico Allaria, 2017, izvirni znanstveni članek Ključne besede: free electron laser, harmonic up-conversion, high-harmonic generation, seeding, x-ray, pump-probe, microbunching instability Objavljeno v RUNG: 13.01.2020; Ogledov: 3075; Prenosov: 13 Povezava na celotno besedilo |