The research of Dr. Cristian Svetina is focused on the development and application of Extreme Ultraviolet (EUV), soft and hard X-ray nonlinear science as well as design and realisation of beamlines, optics and instrumentation. He worked as staff scientist at EUV Free Electron Laser (FEL) FERMI in the Photon Analysis Delivery and Reduction System until 2016 when he received his PhD in nanotechnology from Università degli Studi di Trieste (Trieste, Italy). He then moved to Paul Scherrer Institut – PSI (Switzerland) and participated in the commissioning of the experimental station Bernina at Aramis: the SwissFEL’s hard X-ray branch. In 2018 CS become beamline scientist at Furka experimental station at the SwissFEL’s soft X-ray branch Athos designing the instrument and the Resonant Inelastic X-ray Spectrometer (RIXS) spectrometer coordinating the installations. He also designed the Athos’s on-line single shot SASE-spectrometer. In January 2023 CS joined IMDEA Nanoscience as Senior Scientist leading the X-WaveS group for the development and implementation of EUV and X-ray wave-mixing techniques on condensed matter systems. CS is co-founder of WavemiX: the network for the development of nonlinear science in the EUV and X-rays, and member of the executive board. He is also the main proposer of a prestigious Long Term Proposal at the European X-FEL (Hamburg – Germany) leading a large international team.
The research line of X-WaveS (X-ray Wave-mixing Spectroscopy) group is the development of Extreme Ultraviolet and X-ray wave-mixing methodologies at Free Electron Lasers (FELs) and High Harmonic Generation (HHG) table-top sources and their application to condensed matter systems. Development of optical tools such as table-top Four Wave Mixing laser setups to complement the methodology is also addressed by the group.
J.R. Rouxel, D. Fainozzi, R. Mankowsky, B. Rösner, G. Seniutinas, R. Mincigrucci, S. Catalini, L. Foglia, R. Cucini, F. Döring, A. Kubec, F. Koch, F. Bencivenga, A. Al Haddad, A. Gessini, A.A. Maznev, C. Cirelli, S. Gerber, B. Pedrini, G.F. Mancini, E. Razzoli, M. Burian, H. Ueda, G. Pamfilidis, E. Ferrari, Y. Deng, A. Mozzanica, P. Johnson, D. Ozerov, M.G. Izzo, C. Bottari, C. Arrell, E.J. Divall, S. Zerdane, M. Sander, G. Knopp, P. Beaud, H.T. Lemke, C.J. Milne, C. David, R. Torre, M. Chergui, K.A. Nelson, C. Masciovecchio, U. Staub, L. Patthey and C. Svetina, “Hard X-ray Transient Grating Spectroscopy on Bismuth Germanate”, Nat. Photon. 15, 499–503 (2021). https://doi.org/10.1038/s41566-021-00797-9
C. Svetina, R. Mankowsky, , G. Knopp, F. Koch, G. Seniutinas, B. Rösner, A. Kubec, M. Lebugle, I. Mochi, M. Beck, C. Cirelli, J. Krempasky, C. Pradervand, J. Rouxel, G. Mancini, S. Zerdane, B. Pedrini, V. Esposito, G. Ingold, U. Wagner, U. Flechsig, R. Follath, M. Chergui, C. Milne, H. Lemke, C. David, P. Beaud, "Towards X-ray transient grating spectroscopy," Opt. Lett. 44, 574-577 (2019). https://doi.org/10.1364/OL.44.000574
F. Bencivenga, R. Cucini, F. Capotondi, A. Battistoni, R. Mincigrucci, E. Giangrisostomi, A. Gessini, M. Manfredda, I.P. Nikolov, E. Pedersoli, E. Principi, C. Svetina*, Parisse, P., Casolari, F., Danailov, M. B., Kiskinova, M. and Masciovecchio, C., “Four-wave mixing experiments with extreme ultraviolet transient gratings”, Nature 520, 205–208 (2015). https://doi.org/10.1038/nature14341
Through non-linear optical methods such as four-wave mixing and transient grating spectroscopies, his research involves understanding the ultrafast dynamics and transport of charge carriers, spin, and phonons in nanoscale condensed-matter systems. In addition to optical excitation, he will utilise high-energy radiation, which would provide element-specificity in the response, as well as an improved spatial resolution for transport. Fundamental insights into the phenomena mentioned above are crucial in helping maximise the efficiency of high-speed magnetic and opto-electronic devices used in data storage and communication technologies. Ankit has conducted his doctoral research at the Govt of India's Centre for Excellence in Nanoelectronics, housed in the Department of Electrical Engineering, Indian Institute of Technology Bombay (IIT-B), India. At IIT-B, he investigated Gallium-Nitride nanostructures (like quantum wells and dots) using ultrafast pump-probe spectroscopy. His work provided insights into the dynamics of charge carriers and photons in these systems, which can be helpful in developing faster and more efficient lasers, LEDs, and photodetectors for high-speed optical communication.
