OSA Ultrafast Optical Phenomena Technical Group Online Workshop

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OSA Ultrafast Optical Phenomena Technical Group Online Workshop

Hosted By: Ultrafast Optical Phenomena Technical Group

25 May 2020, 11:00 - 14:00

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Students and early career professionals are invited to join the OSA Ultrafast Optical Phenomena Technical Group for a week of online courses in this topic area. Each day will feature two presentations from researchers with ample time for questions and discussion. Registration is limited so make sure to reserve your spot for each session you want to attend.

As part of the online workshop, we will also be hosting a Twitter poster competition! Workshop attendees can participate by posting their poster on Twitter on 25 May with the hashtag #OSAUltrafastTG. Two individuals will win $500 USD and a three year OSA student membership. Winners will be announced on 29 May. If you are interested in participating, please review the poster session guidelines and this example of how to prepare your poster. 

Twitter Poster Competition sponsored in part by: 

Program for 25 May 2020

Generation of Ultrashort Pulses presented by Cristian Manzoni, CNR-IFN

Abstract: In this tutorial we will explore how to generate broadband pulses by nonlinear optical process: we will start from second order nonlinear processed and discuss the main parameters which are crucial to tune their efficiency. We will then quickly review the steps required to design broadband amplifiers, and comment on some experimental implementations of these devices.

Speaker: Cristian Manzoni is a researcher of the Istituto di Fotonica e Nanotecnologie (IFN) of CNR (Italy) working in the field of nonlinear optics and spectroscopy. He received his Ph.D. in 2006 from Politecnico di Milano (Italy) on ultrafast laser physics. During his post-doc research at the Deutsches Elektronen-Synchrotron in Hamburg (Germany) he worked on free electron laser science. In 2009 he joined the CNR and he is an expert in the generation of ultrafast laser pulses with tunable spectrum from infrared to XUV, up to few-cycle duration, phase-stabilized and with controlled wavefront. His goal includes the development of novel methods for ultrashort pulses control and for time-resolved studies of a vast range of systems: from bio-composites to low-dimensional and strongly correlated materials. His reasearch interest extends also to time-resolved microscopy and hyperspectral imaging applied to two-dimensional crystals and for cultural heritage studies.

Characterization of Ultrashort Pulses presented by Rick Trebino, Georgia Institute of Technology

Abstract: The vast majority of the greatest scientific discoveries of all time have resulted directly from more powerful techniques for measuring light.  Indeed, our most important source of information about our universe is light, and our ability to extract information from it is limited only by our ability to measure it.  Currently, the main frontiers in light measurement are the ultrafast and ultracomplex regimes. This tutorial will introduce the most reliable techniques for measuring such light in time and also space, as well as some of the pitfalls that have plagued proposed measurement techniques in the past.

Speaker: Rick Trebino was born in Boston, Massachusetts on January 18, 1954.  He received his B.A. from Harvard University in 1977 and his Ph.D. degree from Stanford University in 1983.  He is currently the Georgia Research Alliance-Eminent Scholar Chair of Ultrafast Optical Physics at the Georgia Institute of Technology, Atlanta, GA, where he currently researches ultrafast optics.  He has received numerous prizes for his research.  He also recently won the SPIE’s Yzuel Award and the OSA’s Beller Medal for his pioneering contributions to optics education.  He is a Fellow of the Optical Society of America, the American Physical Society, the American Association for the Advancement of Science, and the Society of Photo-Instrumentation Engineers.

 

Program for 26 May 2020

Ultrafast Transient Absorption Spectroscopy presented by Giulio Cerullo, Politecnico di Milano

Abstract: Transient absorption (TA) is the simplest ultrafast spectroscopy technique, as it can be applied over a very broad range of frequencies, from THz to X-rays, providing an enormous amount of information on photoinduced dynamical processes in (bio)-molecules, nanostructures and solids. This webinar will review the basic principles of TA spectroscopy, present the most common experimental implementations and give examples of its application to solving problems in biochemistry and materials science.

Speaker: Giulio Cerullo is a Full Professor with the Physics Department, Politecnico di Milano, where he leads the Ultrafast Optical Spectroscopy laboratory. Prof. Cerullo’s research activity covers a broad area known as “Ultrafast Optical Science”, and concerns on the one hand pushing our capabilities to generate and manipulate ultrashort light pulses, and on the other hand using such pulses to capture the dynamics of ultrafast events in molecules, nanostructures and two-dimensional materials (graphene, transition metal dichalcogenides). Additional research topics are the applications of ultrafast lasers to coherent Raman microscopy and  micro/nanostructuring. He has published more than 450 papers which have received more than 20000 citations (H-index: 75, Scopus). He is a Fellow of the Optical Society of America and of the European Physical Society and Chair of the Quantum Electronics and Optics Division of the European Physical Society. He is the recipient of an ERC Advanced Grant (2012-2017) on two-dimensional electronic spectroscopy of biomolecules. He is on the Editorial Advisory Board of the journals Optica, Laser&Photonics Reviews, Scientific Reports, Chemical Physics, Journal of Raman spectroscopy. He is General Chair of the conferences CLEO/Europe 2017, Ultrafast Phenomena 2018 and the International Conference on Raman Spectroscopy 2020.

Multidimensional Coherent Spectroscopy presented by Steve Cundiff, University of Michigan

Abstract: Multdimensional coherent spectroscopy (MDCS) is a powerful method that has its origins in NMR. Over the last 20 years, a number of approaches to implementing MDCS in the IR and visible spectral regimes have been developed. MDCS has many advantages over simpler techniques including separation of inhomogeneous and homogeneous broadening, determining if resonances are coupled and providing background free signatures of inter-system interactions. I will review the basic concepts of MDCS, give an overview of methods used in the optical domain and briefly give some examples of its applications.

Speaker: Steven T. Cundiff is the Harrison M. Randall Collegiate Professor of Physics Professor at the University of Michigan and holds joint appointments with Electrical Engineering and Computer Science. In 1992, he received his Ph.D. in Applied Physics from the University of Michigan. He spent two years at the University of Marburg, Germany, as a von Humboldt Post-doctoral Fellow. After that he was at Bell Laboratories, Holmdel, until joining JILA at Boulder, Colorado in 1997, where he served as the Chief of the Quantum Physics Division at NIST.  He joined the faculty at University of Colorado in 2014.  He is a Fellow of the American Physical Society and the Optical Society of America.  Just recently, OSA honoured Dr. Cundiff contributions to Optical Sciences with the Arthur L. Schawlow Prize in Laser Science. Dr. Cundiff is co-author on over 175 journal papers, 230 contributed conference papers and 95 invited conference presentations. His research areas include the use of ultrafast pulses to study light-matter interactions, as well as their production and manipulation. The primary tool used for studying light-matter interaction is multidimensional coherent spectroscopy, which we are currently applying to both semiconductor nanostructures and atomic vapors.
 

Program for 27 May 2020

Attosecond Pulses and Attosecond Spectroscopy presented by Ann L’Huillier, Lund University

Abstract: Prof. L'Huillier will give an orientation on the properties of attosecond sources created by high-order harmonic generation in gases, as well as on the utilization of these pulses in attosecond spectroscopy, giving new insights on the dynamics of photoionization.

Speaker: Anne L’Huillier is a Swedish/French researcher in attosecond science. She defended her PhD thesis at the Université Pierre et Marie Curie, Paris, in 1986. She was employed as researcher at Commissariat à l’Energie Atomique, in Saclay, France until 1995. She moved to Lund University, Sweden and became full professor in 1997. Her research is centered on high-order harmonic generation in gases. Currently, her research group works on attosecond source development and optimization as well as on applications, in particular concerning the measurement of photoionization dynamics in atomic systems.

Ultrafast Processes in Molecular Systems: New Insight into the Scaling in Complexity of Chemistry to Biological Systems presented by Dwayne Miller, University of Toronto

Abstract: The focus of the tutorial will be on chemical and biological problems with respect to how chemistry scales in complexity to the level of driving biological functions - to the point of breathing life into otherwise inanimate matter. It is now possible to observe the very atomic motions on the primary timescales directing these chemical processes. The remarkable observation is that a 3N dimensional (N = number of atoms) chemical system reduces to just a few modes that direct the chemistry. It is this enormous reduction in dimensionality that occurs in the barrier crossing region that makes chemistry a transferable concept. This observation seems to hold all the way to systems as large as proteins and molecular motors. Mother nature has already directed our attention to reactive binding sites in which the chemistry is again transduced into highly correlated collective modes as part of imparting biological function. We again see a concept of dimensional reduction (for N>10,000). How far can this simple concept be pushed? It seems we only need to treat order 8-10 atoms as the reaction kernal or portal between reactant surfaces with the rest of the system being considered as the thermal bath coupled to driving these motions or acting through dissipative coupling to collapse the system on the product state. The key modes involved and specific pathway depends on orientational effects for bimolecular reactions. For solution phase bimolecular processes, this information become orientationally averaged. This talk will forcus on latest developments in nanofludics to open up atomically resolved solution phase chemistry using electron probes and the use of lattice confinement to observe a single trajectory for a bimolecular reaction. The latter study enabled the observation of the concerted action of bond breaking and making - a quantum analogue of Newton's craddle. The culmination of work in this area is leading to a reaction mode conceptual basis for chemistry that will unify structure and dynamics.

Speaker: R. J. Dwayne Miller, Max Planck Director (2010-2020), and Distinguished Faculty Research Chair/Professor of Chemistry and Physics University of Toronto (1995-present) has published over 300 research articles, one book, and several reviews. He has pioneered the development of both coherent multidimensional spectroscopy methods, ultrafast laser technology, and introduced the concept of using ultrabright electron sources to directly watch atomic motions during the defining moments of chemistry. This latter work accomplished one of the dream experiments in science, to bring the chemists’ collective gedanken experiment of chemistry to direct observation. He also has a long standing commitment to getting research into real life applications, having started up 6 companies. 

His research accomplishments have been recognized with an A.P. Sloan Fellowship, Camille, Henry Dreyfus Teacher-Scholar Award, Guggenheim Fellowship, Presidential Young Investigator Award (USA), Polanyi Award, Rutherford Medal in Chemistry, the Chemical Institute of Canada (CIC) Medal, E. Bright Wilson Award in Spectroscopy of the American Chemical Society (2015), the Centennary Prize from the Royal Society of Chemistry (2016), and numerous named lectureships. He was inducted as a Fellow of the Royal Society of Canada, Fellow of the CIC, Fellow of the Optical Society of America, Fellow of the Royal Society of Chemistry, and distinguished University Professor at the University of Toronto. In 2018, he was honoured with the European Physics Society Award for Laser Science for Achieving the Fundamental Limit to Minimally Invasive Surgery with Complete Biodiagnostics for Surgical Guidance. He is also a strong advocate for science promotion earning the McNeil Medal from the Royal Society of Canada (2011) for founding Science Rendezvous, which is one of the largest celebrations of science (geographically at least) with over 350 events all across Canada with new initiatives in remote communities in the North, aimed to make science accessible to the general public with over 200,000 attendees annually - made possible by >6000 volunteers/researchers.

 

Program for 28 May 2020

Attosecond Electron Dynamics in Molecules presented by Mauro Nisoli, Politecnico di Milano

Abstract: The investigation of ultrafast processes initiated in molecules by light absorption is of crucial importance in various research areas, from molecular physics to chemistry and biology, from material science to technological applications. I will discuss how the use of attosecond techniques enables the investigation of a number of crucial processes, starting from the simplest molecule (H2) and moving towards more complex molecules, with particular attention on biologically relevant molecules.

Speaker: Mauro Nisoli is Full Professor with the Department of Physics, Politecnico di Milano, where he leads the Attosecond Research Center. His research activity is in the area of Attosecond Science and concerns the development of technologies for the generation of sub-femtosecond pulses and the application of these pulses to the investigation and control of ultrafast electronic dynamics in atoms, molecules, nanostructures and solid-state systems. He is co-author of about 200 research papers in international journals and of didactic books of Physics and Quantum Electronics.


Presentation on ultrafast processes in solids by Farhan Rana, Cornell University

Abstract: A variety of spectroscopy techniques have been developed over the years to record the ultrafast dynamics of elctrons, holes and spins, and of collective excitations, such as phonons, magnons, and plasmons, in solids. These techniques have used combinations of short optical, IR, or terahertz pulses to both excite matter and then probe the resulting non-equilibrium dynamics. This talk will introduce various ultrafast optical spectroscopy techniques, using exmaples form speaker’s own work on studying ultrafast dynamics in various materials, including two-dimensional materials, wide bandgap materials, and spintronic materials.

Speaker: Farhan Rana is a Professor of Electrical and Computer Engineering at Cornell University.  He received the B.S., M.S. (1997), and Ph.D. (2003) degrees all in Electrical Engineering from the Massachusetts Institute of Technology (MIT). Before starting the Ph.D., he worked at IBM's T. J.Watson Research Center on nanocrystal and quantum dot memory devices. He joined the faculty of Electrical and Computer Engineering at Cornell University, Ithaca, NY in 2003. He received the U.S. Defense Advanced Research Projects Agency (DARPA) Young Faculty Award in 2008, the U.S. National Science Foundation (NSF) CAREER Award in 2004, the ILX Lightwave faculty award in 2005, Cornell's Michael A. Tien Excellence in Teaching Award in 2006 and also in 2010, and the Gold Medal for Academic Performance by the Government of Pakistan. He has also received several best paper awards including the "Most Downloaded Paper" title in 2008 by the IEEE Transactions on Nanotechnology. He previously served as Associate Director of the School of Electrical and Computer Engineering at Cornell University.

Program for 29 May 2020

Attosecond Electron Dynamics in Solids presented by Martin Schultze, Technical University Graz​

Abstract: Light-matter interaction starts with electron motion driven by the electric field of light. With the toolbox of attosecond spectroscopy we can now investigate this process in real time also in solids. Most fascinating, it helps to explore a new range of physical problems at the ultrafast timescale where the coherence between light and charge is still preserved. This talk will discuss processes that emerge at this time-domain boundary between classical and quantum behavior of electrons inside solid state materials and show how light-field driven charge motion can be exploited for an incredibly fast manipulation of the electronic and magnetic state of matter.

Speaker: Martin Schultze is Physics Professor and Director of the Institute of Experimental Physics at the Technical University Graz, Austria. His research activity focuses on time resolved spectroscopy with (sub-) attosecond temporal resolution applied to the study of the electron dynamics in with the hope that ultrafast manipulation of electronic states can lead to a novel regime of coherent opto-electronics. Schultz received his Ph.D. degree from LMU Munich (2008) after graduating in Physics at ETH Zurich. Postdoc at the University of California in Berkely, USA and the Max Planck Institute of Quantum Optics (MPQ) in Garching, Germany.  


Career Lab Session – We will wrap up the week’s programming with a career session, starting at 12:30 EDT. Featured speakers will include Rosa Romero, Sphere Ultrafast Photonics SA, Clara Saraceno, Ruhr Universität Bochum, Alison Taylor, OSA Publishing, Elena Belsole, Communications Physics, and Thomas Ganz, Jenoptik. The winners of the Twitter poster session will also be announced during this session.