Clarion Congress Hotel
Prague, Czech Republic
24 - 27 April 2017
Plenary Events
Plenary Session I
Date: Monday 24 April 2017
Time: 4:00 PM - 5:55 PM
Location: Nadir
16.00 to 16.25
Opening Remarks
Jiří Homola, Institute of Photonics and Electronics of the CAS, v.v.i., Czech Republic

Welcome Address
Czech Academy of Sciences

SPIE Welcome and Introduction
Presentation of SPIE Fellowship
Nigel Johnson
Univ of Glasgow, United Kingdom
For his achievements in photonic crystals and metamaterials.

Inmaculada Pascual
Univ de Alicante, Spain
For her achievements in holographic materials, optical storage diffractive optics and visual optics.

In Memoriam of Wolfgang Sandner
ELI-DC director and laser scientist, 2011 Optics+Optoelectronics Symposium Chair, Member of the Symposium Steering Committee and 20011-2015 Steering Committee Member
Tribute presented by Carlo Rizzuto, Director General of the Extreme Light Infrastructure Delivery Consortium International, Belgium

Introduction to Hot Topics
Jiří Homola,
Institute of Photonics and Electronics of the CAS, v.v.i., Czech Republic

16:25 to 17:10
Next generation of lasers generating 100-PW and beyond peak power: prospects and challenges
Jonathan D. Zuegel
Univ. of Rochester, Laboratory for Laser Energetics, United States

Optical parametric chirped-pulse amplification (OPCPA) pumped by multikilojoule, Nd:glass lasers is a promising approach to produce ultra-intense pulses (<1023 W/cm2) that can be used to study ultrarelativistic phenomena. Scalable technologies are being developed and demonstrated to prepare for a future upgrade of the OMEGA EP Laser System to pump an optical parametric amplifier line (EP OPAL) and realize a high-energy, 100-PW-class system. The goal is a system capable of achieving ultrahigh intensities (1.5 kJ, 20 fs, 75 PW, ~1024 W/cm2) for experiments that can also integrate picosecond infrared and/or nanosecond ultraviolet laser pulses from OMEGA EP beamlines.
OPAL technology development is underway that will: demonstrate an ultra-broadband seed source with ultrahigh temporal contrast, develop nanosecond-pumped OPCPA amplifiers that can be scaled to kilojoule pulse energies; and prove optical and diagnostic systems for transporting, compressing, focusing, and measuring pulses to achieve nearly transform-limited and diffraction-limited performance with the required damage thresholds. These efforts are being accomplished in a mid-scale OPCPA system (7.5 J, 15 fs) that will serve as a prototype front end for EP OPAL.
This material is based upon work supported by the Department of Energy National Nuclear Security Administration under Award Number DE-NA0001944, the University of Rochester, and the New York State Energy Research and Development Authority. The support of DOE does not constitute an endorsement by DOE of the views expressed in this article.

Biography: Dr. Jonathan D. Zuegel is Laser Development and Engineering Division Director and a Senior Scientist at the University of Rochester's Laboratory for Laser Energetics. He joined LLE in 1996 after receiving his Ph.D. in Optics from The Institute of Optics at the University of Rochester. He received his B.S. (1983) and Masters of Engineering (1984) in Electrical Engineering from Cornell University and served in the U.S. Navy in the Department of Energy Division of Naval Reactors.
Dr. Zuegel is an author of more than 100 publications.and a Fellow of the Optical Society of America.

17.10 to 17.55
Advanced optical manipulation exploiting materials science
Kishan Dholakia
School of Physics and Astronomy, Univ. of St. Andrews, United Kingdom

In science fiction, one is quite familiar with the idea of moving objects using laser beams, evoking concepts such as a “tractor beam”. In the laboratory science fiction turns into science fact: a powerful technique known as “optical tweezers” (OT) shows that micrometre-sized particles (and even biological material and atoms) can be grabbed, moved and generally manipulated without any physical contact using optical forces. This is a powerful demonstration of the optical dipole or gradient force in action. Such “optical tweezers”, based primarily on Newton’s laws and fundamental optics have enabled unprecedented insight about biological molecules such as DNA and molecular motors. In the microscopic world of optical tweezers, researchers are now harnessing these systems to study a host of science: this includes advanced colloidal interactions, dynamics of particles in various potentials (with strong analogues to atomic systems), insights into superconductivity, optically bound matter, studies of the optical angular momentum of light, magnetic flux line pinning, thermodynamics, microfluidics and motor protein transport. The list is ever growing.
This talk will give a perspective of emergent studies in manipulation using materials science. This includes the use of particles with specific properties for new studies. This can include the rotation of particles in liquid and vacuum using vaterite [1] and nanovaterite particles [2]. These particles exhibit a birefringence that allows them to spin when using circularly polarised trapping beams. Such studies can lead to very high rotation rates and exhibit new features that link to optomechanical cooling of the particle motion and potential future studies of quantum friction. This work may be extended to study the rotation of two particles in vacuum in co- and counter-rotating geometries [3]. The use of these latter types of particles can lead to new studies in optomechanics [4].

[1] Y. Arita, M. Mazilu, and K. Dholakia, Nat Commun 4, 2374 (2013)
[2] Yoshihiko Arita, Joseph M. Richards, Michael Mazilu, Gabriel C. Spalding, Susan E. Skelton Spesyvtseva, Derek Craig, and Kishan Dholakia, ACS Nano, 2016, 10 (12), 11505 (2016)
[3] Yoshihiko Arita, Michael Mazilu, Tom Vettenburg, Ewan M. Wright, and Kishan Dholakia, Optics Letters 40(20), 4751-4754 (2015).
[4] Susan E. Skelton Spesyvtseva and Kishan Dholakia, ACS Photonics 3(5), 719-736 (2016)

Biography: Kishan Dholakia is Professor at the University of St Andrews, Scotland and an honorary adjunct Professor at the Centre for Optical Sciences at the University of Arizona, USA and at Chiba University, Japan. He works on advanced imaging, beam shaping and optical manipulation. He has published over 275 journal papers. His work is cited in the Guinness book of Records 2015 for the fastest man-made rotation. He is a Fellow of the Royal Society of Edinburgh, OSA and SPIE. In 2008 he was awarded a Wolfson Merit Award from the Royal Society. In 2016 he won the R.W. Wood Prize of the Optical Society.
Plenary Session II
Date: Tuesday 25 April 2017
Time: 9:00 AM - 9:05 AM
Location: Nadir
9:00 to 9:05
Jiří Homola, Institute of Photonics and Electronics of the ASCR, v.v.i., Czech Republic

Presentation of Yuri Denisyuk Medal
Miroslav Miler
Institute of Photonics and Electronics of the CAS, v.v.i., Czech Republic
For his achievements in the field of holography.
The medal is awarded on behalf of the Rozhdestvensky Optical Society

9:05 to 9:50
Optical systems implemented with multimode fibers
Demetri Psaltis, Ecole polytechnique fédérale de Lausanne, Optics Laboratory, Switzerland

Holography and phase conjugation were proposed in the middle 1960’s for correcting the distortions in imaging systems due to aberrating or scattering media. These early methods have been revisited in recent years and successful experimental demonstrations have been reported with digital holographic methods in which the recording and reconstruction of the hologram is done with the help of a digital computer. The digital holographic methods offer a lot more flexibility and control compared to the all-optical methods of the past making holographic imaging much more practical. In addition, adaptive wavefront shaping techniques have been recently developed providing a set of related and synergistic methods for imaging in complex media. In this presentation we will focus on the application of the modern tools of holography to light transmission through multi-mode fibers (MMF’s) [1]. The modal dispersion that severely scrambles images propagating through MMF’s can be compensated allowing us to exploit the many degrees of freedom available for imaging and sensing.
A wide variety of functionalities that are usually implemented with lenses have been demonstrated with MMF’s combined with wavefront shaping. These include focusing and scanning light through a MMF, leading to novel endoscopes. Projection of arbitrary images through a MMF has been demonstrated with potential applications in display and structured illumination. The demonstration of ultrashort transmission of laser pulses through MMF’s allows multi-photon excitation with potential applications in imaging, ablation and photopolymerisation. The main advantage of MMF’s compared to lenses is that the MMF is a digitally controlled endoscope and is therefore able to reach places that are difficult to access with lenses. The advantage of MMF’s over other endoscopes is the large number of spatial and temporal degrees of freedom which can be digitally controlled leading to high resolution in a very compact implementation. The main disadvantage of MMF’s is their sensitivity to bending and therefore currently they only work as rigid probes. However, there are interesting new results that show promise for the future implementation of flexible MMF endoscopes.

[1] Imaging with Multimode Fibers Demetri Psaltis and Christophe Moser Optics & Photonics News, vol 27, January 2016

Biography: Demetri Psaltis is professor of optics and the director of the Optics Laboratory at the Ecole Polytechnique Federale de Lausanne (EPFL). He was educated at Carnegie-Mellon University where he received the Bachelor of Science in Electrical Engineering and Economics in 1974, the Master's in 1975, and the PhD in Electrical Engineering in 1977. In 1980, he joined the faculty at the California Institute of Technology, in Pasadena, California where he held the Thomas G. Myers Chair in Electrical Engineering. He served as Executive Officer for the Computation and Neural Systems department from 1992-1996. From 1996 until 1999 he was the Director of the National Science Foundation research center on Neuromorphic Systems Engineering at Caltech. In 2004 he established at Caltech the Center for Optofluidic Integration and he served as the director until he moved to EPFL in 2006 where he established his research lab and served as dean of the engineering school for 10 years. His research interests are imaging, holography, biophotonics, nonlinear optics, and optofluidics. He has over 400 publications in these areas. Dr. Psaltis is a fellow of the IEEE, the Optical Society of America, the European Optical Society and the Society for Photo-optical Systems Engineering (SPIE). He received the International Commission of Optics Prize, the Humboldt Award, the Leith Medal, the Gabor Prize and the Joseph Fraunhofer Award/Robert M. Burley Prize .
Plenary Session III
Date: Wednesday 26 April 2017
Time: 1:30 PM - 3:15 PM
Location: Nadir
13:30 to 13:35
Bedrich Rus, ELI Beamlines, Institute of Physics, CAS v.v.i., Czech Republic

13:35 to 14:05
New opportunities for science and applications using x-ray laser radiation provided by European XFEL
Robert Feidenhans’l
European XFEL GmbH, Germany

The European X-ray Free Electron Laser is being commissioned in the spring of 2017 and will start first user operation in the fall. It will be the world’s first hard X-ray laser facility based on superconducting accelerator technology and will deliver an unprecedented X-ray beam to the user community with a high repetition rate. First users are expected to come in the fall of 2017 on the FXE instrument for ultra-fast x-ray spectroscopy and x-ray scattering and on the SPB/SFX instrument for diffractive imaging and structural determination for single particles, clusters and biomolecules. In 2018 four more instruments will be taken into operation covering a wide range of scientific fields. In the talk a full description of the facility will be given including a report of the status of the commissioning.

Biography: Prof. Robert Feidenhans’l is the Chairman of the Management Board of the European XFEL GmbH. Until 2016 Prof. Feidenhans’l held the position of the head of the Niels Bohr Institute at the University of Copenhagen, Denmark. He is also a member of the European XFEL Council, the supreme organ of the company, for which he served as a chairman from 2010 to 2014.
Robert Feidenhans’l studied at Aarhus University and holds a Ph.D. in surface physics, a field which has since evolved into nanophysics. Starting in 1983, he worked at the Risø National Laboratory in different scientific and leading positions, until joining the Niels Bohr Institute in 2005. As a researcher, he is an expert in new groundbreaking X-ray technologies and research at large-scale X-ray synchrotron research facilities, such as ESRF in France, PSI in Switzerland, and DESY in Hamburg.

14:05 to 14:35
High average power, diode pumped Petawatt laser systems: a new generation of lasers enabling precision science and commercial applications
Constantin L. Haefner
NIF and Photon Science Directorate, Lawrence Livermore Lab., United States

High peak power laser systems with intensities exceeding 1018W/cm2 allow for driving compact and versatile secondary sources such as particle beam generation and coherent and incoherent x-ray sources. Previous drive lasers have primarily relied on flashlamp technology, and therefore have been constrained to access industrial applications that require average power levels of typically kilowatt and beyond, or exploratory research that requires highest pulse fidelity and repeatability. A new generation of diode pumped, high intensity laser systems with innovative technologies for thermal management, new optical materials and pulse compressor gratings have recently been demonstrated. In particular, the High-repetition-rate Advanced Petawatt Laser System (HAPLS) recently completed a momentous milestone of delivering continuously laser pulses with energy exceeding 15 J, pulse duration 28 fs, at 3.3 Hz – equivalent to a peak power of ~0.5 PetaWatt/pulse delivered at high rep rate. When complete and ramped to its final design performance HAPLS will be the world’s highest average power Petawatt laser system. Next generation high intensity laser systems such as HAPLS open the door for transforming today’s proof-of-principle experiments into viable real-world applications.

Biography: Dr. Constantin L. Haefner is the Program Director for Advanced Photon Technologies (APT) in the NIF & Photon Science Directorate at Lawrence Livermore National Laboratory. He received his Diploma degree in Physics from the University Of Constance, Germany in 1999, and his Ph.D. in 2003 from the University of Heidelberg. Dr. Haefner then joined the University of Nevada Reno’s Nevada Terawatt Facility as Research Assistant Professor and Chief Laser Scientist performing laser systems design and research for high energy density physics experiments. In 2004, Dr. Haefner joined Lawrence Livermore National Laboratory and has since led the research and development of high peak power laser technologies. In 2010 he was appointed Chief Scientist on the kilojoule-Petawatt NIF Advanced Radiographic Capability laser system and in 2013 became the Program Director for APT.
Key mission areas of APT are the research and development of laser systems relevant to scientific research and commercial applications, as well as laser technology advancement for laser fusion drivers. One of the main focus areas is the transformation of single-shot, high peak power laser systems into high average power, high repetition rate laser drivers that enable today’s proof-of-principle experiments to be pushed towards real-world applications such as laser based accelerators or intense x-ray sources for temporally resolved, high resolution imaging in industry, medicine and many other areas.

14:35 to 15:15
Panel Discussion
Prospects of new generation of high-repetition high-peak power laser systems: implications to research and industrial applications

Moderator: Ric Allott, The Association of Industrial Laser Users (AILU) (United Kingdom)

Panel Members:
Robert Feidenhans’l. European XFEL GmbH, Germany
Constantin L. Haefner, NIF and Photon Science Directorate, Lawrence Livermore Lab., United States

The peak power of a laser defines the science that can be performed or enables a particular industrial process, whereas the average power determines the time it takes to perform the particular task. Recent developments in laser technology now allow the combination of high peak power and high average power for the first time. This opens up a whole new world of science and industrial applications with far reaching benefits for society. This panel discussion will express and debate some of these exciting new opportunities and provide a catalyst for new ideas and concepts.

To introduce the technology and set the context a short introductory talk “Combining high peak power with high average power- opening a whole world of science and applications from materials hardening to space debris” will precede the panel discussion.
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