Yesterday, the Laboratory hosted Dr. Predrag Ranitović, who held an open lecture at Institute of Physics Belgrade. The lecture title was “Attosecond Coherent Control of Atomic and Molecular XUV and X-Ray Absorption Processes by Intense Laser Radiation”.
Abstract:
Recent breakthroughs in the ultrafast lasers development have allowed for the opening of new horizons in the ultrafast experimental and theoretical AMO physics. Following these advances, table-top light sources have provided novel ways to achieve a real-time manipulation of the correlated electron/nuclear wavepacket dynamics by means of attosecond XUV and femtosecond IR radiation [1-6]. However, more than fifteen years upon the birth of attosecond physics, and after the Nobel Prize Award for femtochemistry, the concept of attosecond chemistry has not yet been fully realized. In this talk, I will introduce the basic principles of the strong laser-field ionization and generation of attosecond XUV/X-Ray radiation, and show how the attosecond VUV and XUV light sources can be used to coherently manipulate molecular dynamics by means of electron wave packet interferometry [7-9]. The use of attosecond VUV pulse-trains to coherently excite and control the outcome of a simple chemical reaction in a deuterium molecule, in a nonBorn-Oppenheimer regime, presents intriguing new possibilities for bridging the gap between the attosecond physics and attochemistry [10]. Furthermore, I will discuss very recent results that extend the use of the attosecond table-top techniques to the soft X-Ray regime in the water window [11].
[1] E. Gagnon, P. Ranitovic, X. M. Tong et al. Science 317 (5843), 1374-1378 (2007).
[2] A. S. Sandhu, E. Gagnon, R. Santra, et al. Science 322 (5904), 1081-1085 (2008).
[3] P. Ranitovic, X. M. Tong, B. Gramkow et al. New Journal of Physics 12, 013008 (2010).
[4] D. Hickstain, P. Ranitovic, S. Witte et al. Phys. Rev. Lett. 109, 073004 (2012).
[5] P. Ranitovic, X. M. Tong, C. W. Hogle et al. Phys. Rev. Lett. 106, 053002 (2011).
[6] X. Zhou, P. Ranitovic, C. W. Hogle et al. Nature Physics 8, 232-237 (2012).
[7] P. Ranitovic, X. M. Tong, C. W Hogle et al. Phys. Rev. Lett. 106, 193008 (2011).
[8] C. Hogle, X. M. Tong, L. Martin, M. M. Murnane, H. C. Kapteyn and P. Ranitovic. Phys. Rev. Letters 115 (17), 173004 (2015).
[9] P. Ranitovic et al. Phys. Rev A, 98 (1), 013410 (2018).
[10] P. Ranitovic et al. Proceedings of National Academy of Sciences, 111(3), pp. 912-917 (2014).
[11] Yoann Pertot, et al. Science 355, 6322 (2017).
