» Contacts » Dr Ludovic Rapp
| Position | Senior Fellow |
|---|---|
| Department | Quantum Science & Technology |
| Research group | Laser physics, optics and photonics group |
| Office phone | (02) 612 57310 |
| Office | Physics New 3 42 |
Group leader: High-Power Laser group
Laser innovation
Dr Ludovic Rapp is a Senior Research Fellow at Laser Physics Centre (LPC) at the Australian National University (ANU) and the group leader of the High-Power Laser group. Ludovic has a strong background in ultra-fast laser interaction with matter, ultra-fast laser micromachining and expertise in beam shaping. His research work at ANU on high-pressure material phases formation using ultra-intense laser pulses led to the discovery of two new high-density phases of Silicon, published in Nature Communications. His research interest also includes laser cleaning, laser dentistry, complex beam formation, and advanced laser processing. Dr Rapp participated in two European 7th Framework Programme: “Ultrafast High-Average Power Thin-Disk Oscillators and Amplifiers” and “Laser printing of organic/inorganic material for the fabrication of electronic devices”, two ARC Discovery Projects: “Ultra-fast alchemy: A new strategy to synthesise super-dense nanomaterials” and “Non-equilibrium material phases”, and one ARC Linkage Project: “Laser cleaning processes for Roads and Maritime Services”.
Dr Ludovic Rapp is the Laser Safety Officer of the Research School of Physics and a member of the Work, Health, and Safety (WHS) team.
Grants
Research Consultancies:
2022 --
2021 --
2020 --
Awards
Ph.D. of Physics and Materials Science, 2007- 2010
With high honours, University of Mediterranean, LP3 laboratory, Marseille, France
2023 --
Introduction to the key concepts in physics in the areas of mechanics, electricity and magnetism.
Learning Outcomes:
Understand the fundamental principles of classical mechanics, electric and magnetic fields and simple electrical circuits.
Be able to apply these principles to the solution of problems and to the conduct of experiments.
Have a basic understanding of uncertainty in the context of physics, and how to handle it.
Have basic laboratory skills including equipment skills, data gathering, record keeping, data analysis, experiment design, and presentation.
2022 --
Physics 1 introduces the fundamentals of university physics, and should be taken by all students planning to major or minor in physics.
The course focuses on using modelling and estimation to figure out the physics of complex real-world situations, on applying the mathematical concepts of vectors and vector fields, and on experimental skills. It is taught in small-group hands-on workshops and laboratories.
Syllabus: Mechanics, point-particle models, contact forces, rigid body models and rotation. Theory and practice of DC circuits and simple AC circuits. Thermal physics and heat transfer. Writing computer programs to numerically model dynamical situations, and to plot and fit data. Measuring and calculating uncertainties, interpreting uncertain data. Vectors and vector fields. Electrostatics, magnetostatics and induction.
Learning Outcomes:
Construct and use appropriate physical models for complex, real-world physics problems in the fields of mechanics and thermal physics.
Quickly estimate order-of-magnitude values for a wide range of physical quantities.
Measure and calculate uncertainties, and interpret uncertain data.
Use computer programs to analyse data and to model complex physical systems.Become proficient with vectors and vector fields
Use vectors and vector fields to calculate electric and magnetic fields.
Construct and analyse DC and simple AC circuits
2021 --
Physics 2 builds on Physics 1, PHYS1101, with a greater emphasis on mathematical techniques. It is an essential course for any student intending to study physics in later years as it introduces foundational knowledge in the areas of waves and optics, mathematical physics, stationary action principles, and special relativity. The course develops experimental and mathematical methods as parts of an integrated approach to physics.
This course together with Physics 1 provide the basis for further study of physics. They underpin the study at second year level of the core physics areas of: quantum mechanics, statistical and thermal physics, electromagnetism, and classical physics.
Learning Outcomes:
Understand the concepts of special relativity, including: the postulates, time dilation, length contraction and the relativity of simultaneity.
Be able use the Lorentz transformations for event coordinates.
Understand the stationary action principle and its origin in quantum mechanics.
Be able to derive the Euler-Lagrange equations for simple mechanical systems.
Be able to take a wide range of physical situations, model them using differential equations, and effectively use the solutions.
Be able to set up and compute 3D integrals of both scalar and vector quantities and use them to compute physical quantities such as electric fields and moments of inertia.
Be able to model physical systems as damped, driven and coupled harmonic oscillators.
Be able to apply physics principles to the solution of problems, including complex problems, and to the conduct of experiments.
Have developed laboratory skills including equipment skills, data gathering and analysis, estimation and interpretation of uncertainties and, experiment design, and presentation.
HDR supervision:
Honours supervision:
Conference:
Reviewer:
Dr Rapp is developping novel optical strategies of material structuration for the creation of new material phases with the collaboration of Swinburne University of Technology (Australia), the University of Cambridge (United Kingdom), Oak Ridge National Laboratory (USA), Argonne National Laboratory (USA), the National University of Science and Technology (Russia), the National Institute of Materials Science (Japan), and the University of Tsukuba (Japan).
He is participating in the development of ultrashort laser application for large scale industrial application and innovative laser preservation and restoration of the structural integrity and iconic status of the Sydney Harbour Bridge with the collaboration of Transport of NSW (Australia), University of Canberra (Australia), University of Sydney (Australia) and Australian Nuclear Science and Technology Organisation (ANSTO).
Dr Rapp is involved in experiments with extremely high-power laser for material phases transformation at the Japanese Spring-8 X-Ray Free-electron Laser SACLA in collaboration with Osaka University (Japan), Japan Atomic Energy Agency (Japan), Kobe University (Japan) and Queensland University of Technology (Australia).
Experimental evidence of new tetragonal polymorphs of silicon formed through ultrafast laser induced confined micro explosion

L. Rapp, B. Haberl, C.J. Pickard, J.E. Bradby, E.G. Gamaly, J.S.Williams, S. Juodkazis, A.V. Rode

Nature Communication 6:7555 (2015)
A study demonstrating the formation of two novel metastable Si phases by the ultrafast laser induced confined microexplosion method, predicted theoretically but never observed in nature or in laboratory experiments. Theoretical prediction of four more new Si-allotropes with 32 atoms in a primitive cell, two tetragonal and two monoclinical.
“The real breakthrough has happened in 2015 when Rapp et al. have found evidence for several metastable silicon phases after ultrashort laser-induced confined microexplosions[..]. They have determined the lattice parameters and possible atomic structures of [...] phases: [...] The exotic silicon phases and those new discovered by Rapp et al. have provided a novel insight into the local structure and properties of the amorphous phase of silicon.” Dmitrienko et al., Phys. Rev. B101 245203 (2020)
L. Rapp, T. Matsuoka, K.L. Firestein, D. Sagae, H. Habara, K. Mukai, K.A. Tanaka, E. Gamaly, R. Kodama, Y. Seto, T. Syobu, A. Tominaga, L. Smilie, B. Haberl, T. Pikuz, T. Yabuuchi, T. Togash, Y. Inubushi, M. Yabashi, S. Juodkazis, D.V. Golberg, A.V. Rode, N. Ozaki
Ultrafast Laser Nanostructuring - The Pursuit of Extreme Scales, Springer Nature Switzerland AG 2022. Springer Series in Optical Sciences, Eds R. Stoian and J. Bonse, vol. 239, 0342-4111
All femtosecond optical pump and X-ray probe: holey-axicon for free electron laser
V. Anand, J. Maksimovic, T. Katkus, S. H. Ng, O. Ulcinas, M. Mikutis, J. Baltrukonis, A. Urbas, G. Slekys, H. Ogura, D. Sagae, T. Pikuz, T. Somekawa, N. Ozaki, A. Vailionis, G. Seniutinas, V. Mizeikis, K. Glazebrook, J. P. Brodie, P. R. Stoddart, L. Rapp, A. V. Rode, E. G. Gamaly, S. Juodkazis,
Arxiv 2005.14654 (2020)
Single shot femtosecond laser nano-ablation of CVD monolayer graphene,
A. Gil-Villalba, R. Meyer, R. Giust, L. Rapp, C. Billet, F. Courvoisier
,
Scientific report 8, 1, 14601 (2018)
Interaction of the ultra-short Bessel beams with transparent dielectrics: Evidence of high-energy concentration and multi-tap pressure
E.G. Gamaly, A.V. Rode, S. Juodkazis, L. Rapp, R. Giust,, L. Furfaro, P.A. Lacourt, J.M. Dudley F. Courvoisier

Arxiv 1708.08163 (2017)
High aspect ratio, polarisation-shaped, micro explosions in the bulk of sapphire generated by femtosecond Bessel beams,
L. Rapp, R. Meyer, R. Giust, L. Furfaro, J. Dudley, F. Courvoisier

Scientific Report 6 34286 (2016)
Polyvinyl phenol (PVP) microcapacitors printed by laser-induced forward transfer (LIFT): multilayered pixel design and thermal analysis investigations
C. Constantinescu, L. Rapp, P. Rotaru, P. Delaporte, A.P. Alloncle,
Journal of Physics D: Applied Physics 49 (15) 155301 (2016)
Photoluminescence from voids created by femtosecond- laser pulses inside cubic-BN,
R. Buividas, I. Aharonovich, G. Seniutinas, X. W. Wang, L. Rapp, A.V. Rode, T. Taniguchi, S. Juodkasis
Optics Letters 40, 24, (2015) 5711
Microcapacitors with controlled electrical capacity in the pF-nF range printed by laser-induced forward transfer
C. Constantinescu, L. Rapp, A.K. Diallo, C. Videlot-Ackermann, P. Delaporte, A.P. Alloncle
Organic Electronics 20 (2015) 1-7
Investigations on laser printing of micro capacitors using poly(methyl methacrylate) dielectric thin films for organic electronics application
C. Constantinescu, L. Rapp, P. Delaporte, A.P. Alloncle
Applied Surface Science 374 (2015) 90-95
Femtosecond laser-induced confined microexplosion: tool for creation high-pressure phases
Saulius Juodkazis, Arturas Vailionis, Eugene G. Gamaly, Ludovic Rapp, Vygantas Mizeikis et al.
MRS Advances, 1, 17, (2015) 1149–1155
Functional multilayered capacitor pixels printed by picosecond laser-induced forward transfer using a smart beam shaping technique
L. Rapp, C. Constantinescu, Y. Larmande, A. K. Diallo, C. Videlot-Ackermann et al.
Sensors and Actuators A: Physical, 224, (2015) 111–118
High-speed multi-jets printing using laser forward transfer: time-resolved study of the ejection dynamics
E. Biver, L. Rapp, A.P. Alloncle, P. Serra, P. Delaporte
Optics Express 22 (2014) 14 17122-17134
Confined microexplosion induced by ultra-short laser pulse at SiO2/Si interface
L. Rapp, B. Haberl, J.E. Bradby, E.G. Gamaly, J.S. Williams, A.V. Rode
Invited paper: Applied Physics A 114 1 (2014) 33-43
L. Rapp, C. Constantinescu, Y. Larmande, A.P. Alloncle, P. Delaporte
Smart beam shaping for the deposition of solid polymeric material by laser forward transfer
Applied Physics A (2014)
Refereed Conference Proceedings
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