Laser Plasmas and Spectroscopy

Our research is focused on the interaction of intense lasers with matter, in all of its forms. Current applications include finding novel materials for next generation semiconductor manufacturing and laser based methods for contaminant analysis and removal from wind turbine blades.

About the Research Area

When an intense laser interacts with matter (in all of its forms), a set of complex optical and plasma processes are set in motion. By spectroscopically analysing the light emitted (or absorbed) during the interaction these processes can be understood, and even manipulated. A host of applications are enabled in areas as diverse as energy generation, manufacturing, novel materials and environmental monitoring. We collaborate widely with international laboratories and industrial partners on all aspects of the work from theory to experiment to translation.

Research Projects

Laser Clean Project – https://laserclean.ie/

Laser Plasmas and Spectroscopy Publications

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Trends in autoionization of Rydberg states converging to the [Formula Presented] threshold in the [Formula Presented] isoelectonic sequence: Theory and experiment. Neogi, A; Kennedy, E.T; Mosnier, J.-P; van Kampen, P; Costello, J.T; O’Sullivan, G; Mansfield, M.W.D; Demekhin, P.V; Lagutin, B.M; Sukhorukov, V.L. Physical Review A – Atomic, Molecular, and Optical Physics 2003

Double ionization of atomic negative ions in an intense laser field. Greenwood, J.B; Collins, G.F; Pedregosa-Gutierrez, J; McKenna, J; Murphy, A; Costello, J.T. Journal of Physics B: Atomic, Molecular and Optical Physics 2003

Absolute photoionization cross sections and resonance structure of doubly ionized silicon in the region of the 2p-1 threshold: Experiment and theory. Mosnier, J.-P; Sayyad, M.H; Kennedy, E.T; Bizau, J.-M; Cubaynes, D; Wuilleumier, F.J; Champeaux, J.-P; Blancard, C; Hari Varma, R; Banerjee, T; Deshmukh, P.C; Manson, S.T. Physical Review A – Atomic, Molecular, and Optical Physics 2003

Evidence for rescattering in intense, femtosecond laser interactions with a negative ion. Pedregosa-Gutierrez, J; Orr, P.A; Greenwood, J.B; Murphy, A; Costello, J.T; Zrost, K; Ergler, T; Moshammer, R; Ullrich, J. Physical Review Letters 2004

Tracking ground state Ba+ ions in an expanding laser-plasma plume using time-resolved vacuum ultraviolet photoionization imaging. Hirsch, J.S; Kavanagh, K.D; Kennedy, E.T; Costello, J.T; Nicolosi, P; Poletto, L. Laser and Particle Beams 2004

Dynamically and quasiforbidden tansitions in potoionization of open-shell atoms: A combined experimental and theoretical study. Cubaynes, D; Meyer, M; Grum-Grzhimailo, A.N; Bizau, J.-M; Kennedy, E.T; Bozek, J; Martins, M; Canton, S; Rude, B; Berrah, N; Wuilleumier, F.J. Physical Review Letters 2004

VUV/EUV ionising radiation and atoms and ions: Dual laser plasma investigations. Kennedy, E.T; Costello, J.T; Mosnier, J.-P; Van Kampen, P. Radiation Physics and Chemistry 2004

Theoretical and experimental study of the extreme ultraviolet photoabsorption spectrum of triply ionized yttrium. Yeates, P; Kennedy, E.T; Mosnier, J.-P; Van Kampen, P; Mansfield, M.W.D; Pedregosa-Gutierrez, J; Greenwood, J.B; Ph Demekhin, V; Petrov, I.D; Lagutin, B.M; Sukhorukov, V.L; Demekhina, L.A; Costello, J.T. Journal of Physics B: Atomic, Molecular and Optical Physics 2004

Time-integrated, spatially resolved plasma characterization of steel samples in the VUV. Bengoechea, J; Kennedy, E.T. Journal of Analytical Atomic Spectrometry 2004

Refractive elements produced in photopolymer layers. O’Neill, F.T; Carr, A.J; Daniels, S.M; Gleeson, M.R; Kelly, J.V; Lawrence, J.R; Sheridan, J.T. Proceedings of SPIE – The International Society for Optical Engineering 2004

Micro-optical elements produced using an photo-embossing technique in photopolymers. O’Neill, F.T; Rowsome, I.C; Carr, A.J; Daniels, S.M; Gleeson, M.R; Kelly, J.V; Close, C; Lawrence, J.R; Sheridan, J.T. Proceedings of SPIE – The International Society for Optical Engineering 2005

Progress report on compact system for point projection X-ray absorption spectroscopy and imaging of laser produced plasmas. Dardis, J; Murphy, A; De Luna, H; Kennedy, E.T; Seugnet, A; Orr, P; Greenwood, J; McKenna, C; Lewis, C.L.S; Costello, J.T. Proceedings of SPIE – The International Society for Optical Engineering 2005

On the 3p-subshell photoabsorption spectra of iron-group ions: The case of Mn2+. Kilbane, D; Kennedy, E.T; Mosnier, J.-P; Van Kampen, P; Costello, J.T. Journal of Physics B: Atomic, Molecular and Optical Physics 2005

4d photoabsorption spectra of Sn II and Sn IV in the 30-65 eV region. Lysaght, M.A; Kilbane, D; Cummings, A; Murphy, N; Dunne, P; O’Sullivan, G; Van Kampen, P; Costello, J.T; Kennedy, E.T. Journal of Physics B: Atomic, Molecular and Optical Physics 2005

EUV photoabsorption spectra of Cd II and Cd III. Kilbane, D; Kennedy, E.T; Mosnier, J.-P; Costello, J.T; Van Kampen, P. Journal of Physics B: Atomic, Molecular and Optical Physics 2005

EUV photoabsorption of laser produced tellurium plasmas: Te I-Te IV. Gaynor, L; Murphy, N; Kilbane, D; Cummings, A; O’Sullivan, G; Costello, J.T; Van Kampen, P; Kennedy, E.T. Journal of Physics B: Atomic, Molecular and Optical Physics 2005

Photoabsorption spectra of a laser produced Sn plasma. Lysaght, M; Kilbane, D; Cummings, A; Murphy, N; Dunne, P; O’Sullivan, G; Gaynor, L; Van Kampen, P; Costello, J.T; Kennedy, E.T. Proceedings of SPIE – The International Society for Optical Engineering 2005

The evolution of 4d photoabsorption in tellurium with increasing ionisation. Gaynor, L; Murphy, N; Cummings, A; O’Sullivan, G; Lysaght, M; Hayden, P; Kilbane, D; Costello, J; Kennedy, E; Van Kampen, P. Proceedings of SPIE – The International Society for Optical Engineering 2005

Behaviour of a planar Langmuir probe in a laser ablation plasma. Doggett, B; Budtz-Joergensen, C; Lunney, J.G; Sheerin, P; Turner, M.M. Applied Surface Science 2005

Expansion dynamics and equilibrium conditions in a laser ablation plume of lithium: Modeling and experiment. Stapleton, M.W; McKiernan, A.P; Mosnier, J.-P. Journal of Applied Physics 2005

Photo-embossed optical elements and microfluidic lens fabrication. O’Neill, F.T; Rowsome, I.C; Carr, A.J; Daniels, S.M; Gleeson, M.R; Kelly, J.V; Lawrence, J.R; Sheridan, J.T. Proceedings of SPIE – The International Society for Optical Engineering 2005

Measured Stark widths and shifts of the neutral argon spectral lines in 4s-4p and 4s-4p′ transitions. Milosavljević, V; Ellingboe, A.R; Djeniže, S. Spectrochimica Acta – Part B Atomic Spectroscopy 2006

Determination of the degree of dissociation in an inductively coupled hydrogen plasma using optical emission spectroscopy and laser diagnostics. Abdel-Rahman, M; Schulz-Von Der Gathen, V; Gans, T; Niemi, K; Döbele, H.F. Plasma Sources Science and Technology 2006

4d photoabsorption spectra of Indium (In II-In IV). Kilbane, D; Mosnier, J.-P; Kennedy, E.T; Costello, J.T; Van Kampen, P. Journal of Physics B: Atomic, Molecular and Optical Physics 2006

Two-color photoionization in xuv free-electron and visible laser fields. Meyer, M; Cubaynes, D; O’Keeffe, P; Luna, H; Yeates, P; Kennedy, E.T; Costello, J.T; Orr, P; Taïeb, R; Maquet, A; Düsterer, S; Radcliffe, P; Redlin, H; Azima, A; Plönjes, E; Feldhaus, J. Physical Review A – Atomic, Molecular, and Optical Physics 2006

Spectroscopic characterization of vacuum ultraviolet free electron laser pulses. Düsterer, S; Radcliffe, P; Geloni, G; Jastrow, U; Kuhlmann, M; Plönjes, E; Tiedtke, K; Treusch, R; Feldhaus, J; Nicolosi, P; Poletto, L; Yeates, P; Luna, H; Costello, J.T; Orr, P; Cubaynes, D; Meyer, M. Optics Letters 2006

Plasma parametrization by analysis of time-resolved laser plasma image spectra. Doria, D; Kavanagh, K.D; Costello, J.T; Luna, H. Measurement Science and Technology 2006

Femtosecond versus nanosecond laser micro-machining of InP: A nondestructive three-dimensional analysis of strain. Xu, L; Lowney, D; McNally, P.J; Borowiec, A; Lankinen, A; Tuomi, T.O; Danilewsky, A.N. Semiconductor Science and Technology 2007

Operation of a free-electron laser from the extreme ultraviolet to the water window. Ackermann, W; Asova, G; Ayvazyan, V; Azima, A; Baboi, N; Bähr, J; Balandin, V; Beutner, B; Brandt, A; Bolzmann, A; Brinkmann, R; Brovko, O.I; Castellano, M; Castro, P; Catani, L; Chiadroni, E; Choroba, S; Cianchi, A; Costello, J.T; Cubaynes, D; Dardis, J; Decking, W; Delsim-Hashemi, H; Delserieys, A; Di Pirro, G; Dohlus, M; Düsterer, S; Eckhardt, A; Edwards, H.T; Faatz, B; Feldhaus, J; Flöttmann, K; Frisch, J; Fröhlich, L; Garvey, T; Gensch, U; Gerth, C; Görler, M; Golubeva, N; Grabosch, H.-J; Grecki, M; Grimm, O; Hacker, K; Hahn, U; Han, J.H; Honkavaara, K; Hott, T; Hüning, M; Ivanisenko, Y; Jaeschke, E; Jalmuzna, W; Jezynski, T; Kammering, R; Katalev, V; Kavanagh, K; Kennedy, E.T; Khodyachykh, S; Klose, K; Kocharyan, V; Körfer, M; Kollewe, M; Koprek, W; Korepanov, S; Kostin, D; Krassilnikov, M; Kube, G; Kuhlmann, M; Lewis, C.L.S; Lilje, L; Limberg, T; Lipka, D; Löhl, F; Luna, H; Luong, M; Martins, M; Meyer, M; Michelato, P; Miltchev, V; Möller, W.D; Monaco, L; Müller, W.F.O; Napieralski, O; Napoly, O; Nicolosi, P; Nölle, D; Nũez, T; Oppelt, A; Pagani, C; Paparella, R; Pchalek, N; Pedregosa-Gutierrez, J; Petersen, B; Petrosyan, B; Petrosyan, G; Petrosyan, L; Pflüger, J; Plönjes, E; Poletto, L; Pozniak, K; Prat, E; Proch, D; Pucyk, P; Radcliffe, P; Redlin, H; Rehlich, K; Richter, M; Roehrs, M; Roensch, J; Romaniuk, R; Ross, M; Rossbach, J; Rybnikov, V; Sachwitz, M; Saldin, E.L; Sandner, W; Schlarb, H; Schmidt, B; Schmitz, M; Schmüser, P; Schneider, J.R; Schneidmiller, E.A; Schnepp, S; Schreiber, S; Seidel, M; Sertore, D; Shabunov, A.V; Simon, C; Simrock, S; Sombrowski, E; Sorokin, A.A; Spanknebel, P; Spesyvtsev, R; Staykov, L; Steffen, B; Stephan, F; Stulle, F; Thom, H; Tiedtke, K; Tischer, M; Toleikis, S; Treusch, R; Trines, D; Tsakov, I; Vogel, E; Weiland, T; Weise, H; Wellhöfer, M; Wendt, M; Will, I; Winter, A; Wittenburg, K; Wurth, W; Yeates, P; Yurkov, M.V; Zagorodnov, I; Zapfe, K. Nature Photonics 2007

Single-shot characterization of independent femtosecond extreme ultraviolet free electron and infrared laser pulses. Radcliffe, P; Düsterer, S; Azima, A; Redlin, H; Feldhaus, J; Dardis, J; Kavanagh, K; Luna, H; Gutierrez, J.P; Yeates, P; Kennedy, E.T; Costello, J.T; Delserieys, A; Lewis, C.L.S; Taïeb, R; Maquet, A; Cubaynes, D; Meyer, M. Applied Physics Letters 2007