Atmosphere Optics, Spectroscopy and Lasers Laboratory  LOA-SL


Extreme Light Induced Ablation Plasma Jet And Nano-patterning



CO: Alexandru Ioan Cuza University of Iasi, faculty of Physics

P1: National Institute for Laser, Plasma & Radiation Physics (INFLPR)

The present project is based on two main directions: a) to study the fundamental aspects that characterize the interaction between the high fluency laser ablation and solid state material via experimental methods and to develop a new theoretical model that describes all the implicated processes (solid state changes after irradiation, plasma generation and expansion behavior, etc.); b) to improve the properties of the studied solid state by means of laser irradiation, to reduce the contamination of the plasma, to increase the lifetime of the plasma, to obtain low absorption rate of D and T and a high melting temperature.   



The interaction of high power (> PW) laser radiation with the solid state matter produces specific effects which are not completely understood and their complexity implies a good understanding of basic physics and chemistry associated with laser-target and particle-particle interaction within the light and plasma plume. In order to understand the material behavior in extreme conditions of irradiation, the complex physico-chemical mechanism involved (including shockwaves, hydrodynamic instabilities and chemical reactions) and the dynamics of plasma under reactive gas remains an interesting field of study. Moreover, the tens of fs PW laser pulses can generate local ultrahigh pressures, from tens of Mbar up to Gbar, inside the irradiated materials. Such mechanical shocks cause structural defects, compositional in-homogeneities, local melting and fast recrystallization, phase transitions etc. The effects of the high power (> PW) laser irradiation on the sample can be studied by means of specific techniques [Scanning Electron Microscopy (SEM) / EDX, atomic force microscopy (AFM), X-ray Photoelectron Spectroscopy – XPS, profilometry etc.], which can be ensured by the experimental capabilities of all partners. A thorough study of this complex phenomenon seems necessary in terms of products ejected and then the specific response of the plasma in different parameters (energy / pulse, wavelength etc.). A combined analysis of changes induced on the solid sample by high fluency laser irradiation and dynamics of the ejected gas phase provides valuable information for a more complete view of the phenomena of desorption / ablation and material behavior technology with great potential in applications. These phenomena depend also on the gas pressure, laser parameters and focal spot size and shape but also on the electrical properties of the solid sample used as target. The presence of the surrounding gas during plasma expansion may also lead to reactive sputtering, thermalization of the plume, and enhanced condensation leading to cluster and nanoparticles formation. All these parameters will open new research fields and may have a novel character at ELI-NP, in conditions of extremely high power and intensity. Furthermore, in order to reproduce the experimental observations, using the conservation laws of the particle number, momentum, and energy, the hot plasma expansion may be numerically simulated and our already developed model can also be improved.


The goal of this project is twofold: firstly is to provide the answers to a complex scientific problem, with high technological impact, and secondly to develop, around an already existing scientific nucleus, a highly collaborative network joining both theorists and experimentalists for fundamental studies and applications possibilities. This feature is structured in two training components: via research and via teaching. Various sub-disciplines are considered (from both physics and chemistry fields) while the societal implications are not ignored:


Physics: atomic physics in plasmas, laser-matter interaction physics, laser-driven charged particles acceleration.

Experiment: experiments towards high-efficiency high-power plasma amplification, radiation pressure assisted acceleration of heavy ions, (ns, ps, fs) transitory plasma behavior, PW laser interaction and plasma physics, nanosecond pulsed high repetition rate laser systems plasma dynamics and surface wall cleaning, space-time resolved optical emission spectroscopy etc.

Chemistry: multiphase reactivity; investigation of selected reactions or of complete reaction sequences.


Report 2014

Report 2015


Deliverables and outcome of the project

List of talks of group members (title, conference or meeting, date);

  1. G. Bulai, V. Nica, B. Chazallon, S. Gurlui, C. Focsa, Influence of rare earth addition on structural and magnetic properties of cobalt ferrite thin films, EMRS Spring Meeting, 2015, Lille, France
  2. G. Bulai, B. Chazallon, I. Dumitru, S Gurlui, C. Focsa, Influence of deposition conditions on rare earth doped cobalt ferrite thin films obtained by PLD, Conference on Laser Ablation, 2015, Cairns, Australia
  3. G. Bulai, S. Gurlui, B. Parvatheeswara Rao, Ovidiu Florin Caltun, Alternating target laser ablation deposition of Cu doped cobalt ferrite thin films, International Conference on Magnetism, 2015, Barcelona, Spain;
  4. G. Bulai, A. Fifere, I. Dumitru, M. Pinteala, C. Focsa, S. Gurlui, Structural and magnetic properties of cobalt ferrite nanoparticles obtained by laser ablation in liquid, International Conference on Magnetism, 2015, Barcelona, Spain;
  5. M. Strat, N. Cimpoesu, V. Pohoata, E. Buruiana, G. Bulai, S. Gurlui, Selforganization of Nanoagregates Polyurethane Coumarins, Frontiers in Polymer Science, 2015, Riva del Garda, Italy;
  6. F. Husanu, G. Bulai, M. Pinteala, C. Focsa, S. Gurlui, Studiul nanoparticulelor de ferită de cobalt obținute prin ablație laser în lichid, Conferinta Naţionala Fizica şi Tehnologiile Educaţionale Moderne, Iași, 2015, Romania;
  7. S. A. Irimiciuc, S. Gurlui, P. Nica, M. Agop, M. Osiac,C. Focsa, Langmuir Probe Measurements on Femtosecond Laser Ablation of Several Metals, EMRS Spring Meeting, 2015, Lille, France;
  8. S. A. Irimiciuc, S. Gurlui, P. Nica, M. Agop, M. Osiac,C. Focsa, Electrical and optical investigation of plasma plumes generated by femtosecond laser ablation of various metals, The 13th Conference on Laser Ablation (COLA-2015) Cairns, Australia;
  9. S. A. Irimiciuc, S. Gurlui, P. Nica, M. Agop, M. Osiac, C. Focsa, Optical and electrical investigations of transient plasmas generated by femtosecond laser ablation, XXXII ICPIG, 2015, Iasi, Romania;
  10. M. M. Cazacu, A. Timofte, O. Rusu, B. Albina, G. Bulai, L. Leontie, and S. Gurlu, Advanced Optical Remote Sensors For Airborne And Spaceborne Platforms, The 4TH International Conference on the Physics of Optical Materials and Devices, August 2015, Budva, Montenegro;
  11. B. C. Hodoroaba, S. A. Irimiciuc, G. Bulai, C. Focsa, S. Gurlui, Studiul plasmei de ferita de cobalt produsa prin ablatie laser, FTEM, 2015, Iasi, Romania;
  12. B. Butoi, C. Porosnicu, P. Dinca, O. Pompilian, I. Jepu, C. Lungu, Characterization of TVA deposited Ag/Cu thin film with antibacterial proprieties for use in Smart Ventilation Systems, 42th European Physics Society Conference on Plasma Physics, 2015, Lisbon, Portugal, 22nd—26th June 2015;
  13. P. Constantin - Workshop-ul PQM-NET IST-2 Training Course Practical Aspects of Managing ITER-related Contracts & Tools in Use (at F4E, ITER-IO, European Fusion Labs), Budapesta, Ungaria -11-16 mai 2015;
  14. L. Mihail, 52nd Culham Plasma Physics Summer School, 13th - 24th July 2015;
  15. C. Porosnicu, I. Jepu, C. Lungu, M. Lungu, P. Dinca, O. Pompilian, I. Tiseanu, Laser Induced Tribological modifications of Composite Layers Obtained by TVA, 15th International Balkan Workshop on Applied Physics and Materials Science, Romania, Constanta, 2-4 iulie 2015.
  16. S.A. Irimiciuc,B.C. Hodoroaba, S.Gurlui, P.Nica, M.Agop, C.Focsa, “ Nanosecond and femtoseconds laser ablation plasmas investigated by time-resolved electrical methods” at “International Conference on Extreme Light” (ICEL), 23-27 November 2015, Bucharest, Romania
  17. S.A. Irimiciuc,B.C. Hodoroaba, ,G.Bulai, S.Gurlui,  M.Agop, C.Focsa,  “ Space- and time-resolved optical
    diagnosis of transient plasmas generated by nanosecond laser ablation of metallic targets”  at
    “International Conference on Extreme Light” (ICEL), 23-27 November 2015, Bucharest, Romania
  18. S.Gurlui, P.Nica, M.Agop, C.Focsa, “ Oscillatory behaviour and double-layer effects in high-fluence laser ablation plasmas” at “International Conference on Extreme Light” (ICEL), 23-27 November 2015, Bucharest, Romania
  19. Oral Talk: Periodic structures formation on beryllium, carbon, tungsten films mixed films by TW laser irradiation. Conferinta: JOINT ICTP-IAEA CONFERENCE ON MODELS AND DATA FOR PLASMA-MATERIAL INTERACTION IN FUSION DEVICES; Dates: 03-07 November 2014. Location: ICTP - Miramare, Trieste, Ita ly 
  20. S.Irimiciuc, I.Mihaila, S.Gurlui, Langmuir probe measurement of a laser produced magnesium plasma, TIM14 Physics Conference – Physics without frontiers, Timisoara, 20 – 22 nov. 2014 
  21. G. Bulai, M. Cazacu, S. Gurlui, C. Focsa, Optical and spectral investigations of CoFe2O4 and CoFe1.8RE0.2O4 (RE=Dy, Gd) plasma plume generated by laser ablation, TIM14 Physics Conference – Physics without frontiers, Timisoara, 20 – 22 nov. 2014 
  22. Georgiana DASCALU, Silviu GURLUI, Petr NEMEC, Oana POMPILIAN, Cristian FOCSA, Nano-, Pico- and Femto-second Laser Ablation of Pure and Rare-earth-doped Gallium Lanthanum Sulphide: A Comparative Study by Space- and Time-resolved Optical Emission Spectroscopy, International Conference on Laser Induced Breakdown Spectroscopy (LIBS 2014), 2014, Beijing, China; 
  23. G. Bulai, O. Caltun, S. Gurlui, M. Feder, B. Chazallon, C. Focsa, Structural and magnetic properties of rare earth doped cobalt ferrite thin films grown by pulsed laser deposition, International Conference on Thin Films, 2014, Dubrovnik, Croatia; 
  24. Rémi Boidin, Jean-Marc Kfoury, Silviu Gurlui, Georgiana Dascalu, Petr Nemec, Virginie Nazabal, Cristian Focsa, Space- and Time-Resolved Optical Emission Spectroscopy of Plasma Plume Dynamics in Laser Ablation of Ge-Sb-Se Chalcogenide Glasses, International Conference on Laser Induced Breakdown Spectroscopy (LIBS 2014), 2014, Beijing, China;

List of papers (journal or conference proceeding)

  1. G. Bulai, S. Gurlui, O. F. Caltun, C. Focsa, Pure and rare earth doped cobalt ferrite laser ablation: space and time resolved optical emission spectroscopy, Digest Journal of Nanomaterials and Biostructures Vol. 10, No. 3, July - September 2015, p. 1043 – 1053;
  2. Mustata, C. Porosnicu, I. Jepu, C. P. Lungu, Simultaneous and Alternate Thin Film Depositions by Thermionic Vacuum Arc (TVA) Method, Romanian reports in Physics, Volume 60, Number 9-10, 2015, in press;
  3. S. Gurlui, N. Petru, M. Agop, M. Osiac, M. Ziskind, C. Focsa, Peculiar effects in transient plasmas generated by high - fluence laser ablation, Submitted at Plasma Sources Science and Technology, Article reference: PSST-100900/2015
  4. C.P. Lungu, A. Marcu, C. M. Ticos, C. Porosnicu, I. Jepu, M. Lungu, C. Luculescu, D. Ursescu, R. Banici, G. Ungureanu, C. E. A Grigorescu, A. Marin; Periodic structures formation on beryllium, carbon, tungsten films mixed films by TW laser irradiation; sent for publication as proceedings of „2014 Joint ICTP-IAEA Conference on Models and Data for Plasma-Material Interaction in Fusion Devices”










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