We invite you to submit your abstract(s) for the Poster Session and Post-Deadline Session. The posters will be co-located with exhibits and will be available to attendees Monday evening – Wednesday evening of the symposium. What is the Post-Deadline Session? We reserve one small session on Thursday for exceptional presentations whose abstracts were submitted after our initial Call for Abstracts formally ended. This session is not structured around a single topic – but represents a “grab bag” of extraordinary talks and subjects.
Since 1998, the International High Power Laser Ablation Symposium has provided a unique forum, in a collegial atmosphere, for exchange of ideas on the physics and application of high power laser-materials interaction, including advances in relevant high power laser sources and problems of beam propagation and detection. This will be our twelfth meeting. The HPLA series is one of the first scientific symposia to be organized around a broad physical phenomenon (laser ablation and its applications) rather than one narrow technology. HPLA treats advances in all related aspects from basic physics to applications. In 2002, the International Symposium on Beamed Energy Propulsion joined HPLA and brought together organizations and individuals interested in developing beamed energy propulsion vehicles, engines, schemes and concepts into space transportation systems of the future. BEP includes microwave sources as well as lasers as drivers. This combined meeting offered an exceptional opportunity for researchers in the BEP and HPLA fields to present the current results of their studies. In 2016, we introduced parallel sessions from the Ultrashort Pulse and Free Electron Laser Meetings which have been organized in the past by DEPS, the Directed Energy Professional Society. The 2018 will feature new and exciting topics relevant to today’s challenges.
This session is dedicated to the use of modern laser technology for improved biomedical research. Recent growth in the applications of lasers to medicine and biology has been explosive. The objective of the session is to bring together international researchers to jointly examine how new laser technologies have provided new knowledge in biology, and pave the way for innovative medical procedure developments. HPLA attendees will have the chance to critically assess the state of the biological application of lasers and to set goals for the future.
This session is dedicated to fundamentals and applications of repetitive ultrashort pulse laser interactions with materials. The repetitive and single pulse interactions are quite different in what concerns thermal coupling, mechanical coupling, shock effects, chemical composition changes, etc. induced and accumulated in the materials. Different applications can be considered ranging from laser space propulsion to laser micro- and nano-structuring. The objective is to bring together international researchers to jointly examine state-of-art in the field and to set goals for future innovative technologies.
The Laser Direct Writing session provides an interdisciplinary forum for discussing the most recent progress in laser-matter interactions, with a focus on laser material transfer, such as laser-induced forward transfer and matrixassisted pulsed laser evaporation – direct write. This session is also focused on advancements in laser material processing for organic electronics and sensing, including very recent research fields such as biomedical applications and biotechnology. Experimental and theoretical papers as well as contributions from industry are welcome.
The development of high-power laser sources is currently undergoing technological developments with strong industrial prospects. HPLA 2018 provides an opportunity to take stock of these technological developments and the applications fostering them. The state of the art on applications such as Laser Shock Peening, Laser Shock Adhesion Test, up-to-date diagnostics, Laser shocks to improve our knowledge of the dynamic behavior of materials under severe conditions will be at the heart of this HPLA session.
Laser-Materials interactions in liquid environment provides the basis not only for e.g. submarine laser-induced plasma spectroscopy but also the nanoparticle generation by lasers in liquids as an alternative path to produce ligand-free colloidal nanoparticle building blocks. Gas phase and chemical synthesis approaches exhibit numerous problems regarding particle aggregation and material variety. Nanoparticles as functional components on surfaces, in bulk materials and as nanohybrids may be applied in optics, biomedicine, catalysis, or energy science. Fundamental studies and scalable applications are under way.
Surface modification by laser irradiation is in the core of many modern surface processing applications where desired material properties are achieved through the formation of metastable phases, grain refinement, generation/annealing of crystal defects, redistribution of the alloying elements and, in the ablation regime or upon irradiation of multiple laser pulses, and generation of complex surfaces morphology. This topic area will review recent progress in the fundamental understanding of the mechanisms responsible for the laser-induced modification of surface microstructure and morphology.
This topic area is related to laser-based materials processing, especially matrix-assisted pulsed laser evaporation (MAPLE) and pulsed laser deposition (PLD). Application areas to be discussed include nanomaterials and nanocomposites, thin-films, and optoelectronic devices and components. In addition to recent research results, perspectives on commercial scale-up and quantitative analysis of laser-based, thin-film deposition will be provided.
This topic area is concerned with high-power and high-energy lasers and their applications. Progress in efficient high pulse energy, diode-pumped solid-state laser architecture based on cryogenic gas cooled, multi-slab ceramic solid state amplifier technology, capable of amplifying nanosecond pulses to kilo-Joule pulse energies are an example of these, being applied now in the European Union’s HiLASE Program. Applications range from laser space propulsion and debris removal to minimizing defects for photovoltaics, and providing laser driven hard x-ray sources.
This topic area is devoted to aspects related to the science and technology of beamed-energy propulsion (BEP) in its various forms and applications. Special interest is given to new BEP concepts (microwave or laser), basic science and technology, mission analysis, and flight experiments. Experimental techniques and new concepts for the determination of relevant propulsion parameters such as thrust, plasma temperature, shockwave velocity, exhaust plume divergence, and plume velocity distributions will also be addressed.
Science has to be funded. Often we are tempted to do our scientific work independently from this important consideration, and then go looking for funding – a solution looking for a problem. This panel will explore the intersection between science and its users, by connecting users with HPLA researchers.
Metamaterials are those with dielectric functions not found in nature – offering unique electromagnetic properties leading to “superlenses” and “cloaking.” These were first perfected in the microwave regime, but are now seeing reality at visible wavelengths. These materials can be designed to passively cancel light scattering from a chosen object, making it invisible. Alternatively, cloaking can be visualized as bending light around a chosen object, giving the appearance that it is not there. As intriguing as optical cloaking is, it is only one example of emerging applications enabled by the unprecedented ability to concentrate and manipulate the electromagnetic field on the subwavelength scale provided by the integration of plasmonics and metamaterials. This topic area will consider the ways in which the science of plasmonics can produce these effects.
The “Promising New Laser and Optical Technologies” topic area will demonstrate recent progress on laser sources, laser coatings, and their unusual applications, including for example, high efficiency solar cells.
Since the space launches started in 1957, they have led to more than 18,000 tracked objects. A much larger population that cannot be tracked (due to their smaller size) is estimated to exceed the number of 100 million, finally leading to an unstable debris environment (Kessler Syndrome). Therefore there is an urgent need to address the problem of debris removal and/or mitigation not only from the technical point of view but also from the operational and legal aspect. This topic area’s emphasis will be given to laser ablation and radiation pressure based solutions, including new laser sources and long range propagation. The role of laser solutions vs microwaves and more conventional approaches will be discussed. In addition, long term asteroid threats and impact mitigation strategies will be presented. Finally, the importance of legal aspects, as well as international cooperation will be highlighted.
The interaction of pulsed laser radiation with materials involves a wealth of the physical processes, depending on the material kind and laser light properties, whose deep understanding is critical for further advancing lasers in the fields of surface processing, new material synthesis, nanotechnology, and biomedicine. The goal of this topic area is to provide a broad overview of the methods for theoretical interpretations and numerical simulations which enable us to gain insight into dynamical behavior of laser-excited matter at different temporal and spatial scales. Kinetic, thermodynamic, mechanical, and other related aspects of laser-matter interaction will be discussed.
This topic area is dedicated to the latest results in ultrashort pulse laser-matter interaction in terms of coupling mechanisms with the target material. The comprehensive understanding of mechanical coupling processes, ranging from shockwave generation to material spallation and phase explosion, is crucial for the optimization of laser heating and ablation applications, e.g., in material processing, beamed-energy propulsion, as well as in biomedical research. Moreover, insights on thermal coupling of laser energy into the target material that specifically come along with ultrashort pulses can provide for valuable perspectives for new technological developments. HPLA attendees are invited to assess and discuss the latest results and upcoming application trends on this field of laser ablation.
Picosecond and femtosecond laser processing of materials is rapidly moving into the mainstream of protocols ranging from laser-finished metallic surfaces to micro- and nanostructuring of semiconductors. This topic area will include recent selected developments as examples of laser-materials interactions under far-from-equilibrium conditions.
Ultrafast pulsed excitation allows creating highly non-equilibrium states of matter characterized by extreme electronic excitation, as well as high temperature and pressure. Subsequent to the initial deposition of energy, a complex chain of secondary relaxation processes can lead to dynamics on very rapid time-scales, and often along unusual, nonequilibrium pathways. Abstracts should highlight the fundamental aspects of material dynamics on ultrafast time and atomic length scales , but also discuss the technological potential enabled by the recent progress in ultrafast technology.
Every day, we are witnessing the ultra high intensity laser expanding its ubiquity, particularly in fundamental science. It can study the loss-of-information paradox in Black Holes, offer an explanation of Ultra High Energy Cosmic Ray generation and provide new ways to produce and accelerate particle beams. It is the goal of this topic to provide a flavor of one of the most exciting laser fields in science and technology today.