25th annual International Laser Physics Workshop
(Yerevan, July 11-15, 2016)

The twenty fifth annual International Laser Physics Workshop (LPHYS'16) was held from to in the city of Yerevan, Republic of Armenia, at the Elite Plaza Business Center and Best Western Congress Hotel, hosted by Yerevan Physics Institute, A Alikhanyan National Laboratory.

This year the conference has been endorsed by the Optical Society (OSA), the year the society celebrates its 100th anniversary. LPHYS'16 has been listed on the OSA industry Calendar of Events.

Yerevan

LPHYS'16.    Special Tributes:

The LPHYS'16 Organizing and Steering Committees have announced their decision that our 25th Anniversary Conference LPHYS'16 will be dedicated to paying tribute to the three major events:

100th birth anniversary of Alexander M Prokhorov

The LPHYS'16 Advisory & Program Committee and Steering Committees would like to remind you that this year the scientific world will celebrate the 100th birth anniversary of Alexander M Prokhorov, the Nobel Prize winner in physics of for the invention of lasers.

Alexander M Prokhorov
Alexander M Prokhorov

A M Prokhorov was born in 1916 in Atherton, Queensland, Australia. In 1923 his family returned to Russia. In 1934, Prokhorov entered the Leningrad State University to study physics. He graduated with honors in 1939 and moved to Moscow to work at the Lebedev Physical Institute, in the oscillations laboratory headed by Prof. N D Papaleksi. He conducted his research there on propagation of radio waves in the ionosphere. During World War II, Dr. Prokhorov fought in infantry, was wounded twice in combat, and was awarded three medals, including the Medal For Courage. He was discharged from military service in 1944 and returned to the Lebedev Institute where, in 1946, he received his Ph.D. degree. The theme of his thesis was "Frequency Stabilization of a Tube Oscillator based on the Small Parameter Method in the Perturbation Theory".

In 1959, Prokhorov became a professor of physics at Moscow State University – the most prestigious university in the Soviet Union. The same year, he was awarded the Lenin Prize. In 1960, he became a corresponding member of the Russian Academy of Sciences and, in 1966, he was elected to a full membership rank at Academy. In 1967, he was awarded his first Order of Lenin. He received five of those highest awards during his life in 1967, 1969, 1975, 1981 and 1986. In 1968, he became vice-director of the Lebedev Institute and in 1971 took a position of Head of Laboratory of another prestigious Soviet institution of higher education, the Moscow Institute of Physics and Technology. In the same year, he was elected a member of the American Academy of Arts and Sciences. Between 1982 and 1998, Prof. Prokhorov served as acting director of the General Physics Institute at the Russian Academy of Sciences, and after 1998 as its honorary director.

In Professor Alexander M Prokhorov, was a principal founder of the annual International Laser Physics Workshop (LPHYS'). During the following ten years he served as the conference permanent Chairman until his death in .

100th anniversary of the Optical Society (OSA)

OSA

OSA was founded in 1916, under the leadership of Perley G Nutting, with 30 optical scientists and instrument makers based in Rochester, New York. OSA soon began publication of its first journal of research results and established an annual meeting. It was founded as the "Optical Society of America" and has evolved into a global enterprise with a worldwide constituency. In recognition of this, the society was renamed in 2008 as The Optical Society (OSA).

This year the LPHYS'16 meeting in Yerevan has been endorses by the Optical Society and has been listed on the OSA industry Calendar of Events.

25th anniversary of the Laser Physics Workshop

This year marks yet another memorable anniversary, the 25th year of the consecutive running of the annual International Laser Physics Workshop. The Workshop started in 1991 by a group of leading laser physics scientists in the former Soviet Union. Alexander M Prokhorov, one of the pioneering researchers in lasers and a 1964 Nobel Prize laureate, became a permanent chairman of the Workshop. From the very onset, this annual convention turned out to be one of the major world forums attracting leading researchers in the field of laser physics and its many applications.

The main idea behind this initiative was to create an annual round-table where many researchers and students from all over the world can come to discuss their achievements over the previous year and to find some answers to the uncharted areas of scientific inquiries. One of the anticipated results of such closely held annual gatherings was creation of many new research projects across national borders in the most promising directions of both theoretical and applied areas.

After Prof. Prokhorov died in 2002, the Workshop has been under permanent co-chairmanship of Prof. Pavel P Pashinin, one of the finest students of Prof. Prokhorov. For the following fifteen years under his helm, the Workshop achieved many new successful results.

One name also deserves to be mentioned at this anniversary - the name of the late Prof. Igor V Yevseyev, one of the founders of the Workshop, who made major contributions to its success that are very difficult to overestimate.

Over those fruitful years since 1991, thousands of scholars, scientists, research administrators and students from 68 countries representing 930 institutions and organizations have attended this conference. For more details of the Workshop times gone by please visit our Workshop history page.

LPHYS'16.    Keynote Speakers:

The LPHYS'16 Organizing and Steering Committees have announced their decision that this year LPHYS'16 will be dedicated to paying tribute to the three major events:

100th birth anniversary of Alexander M Prokhorov

,

100th anniversary of the Optical Society (OSA)

and

25th anniversary of the Laser Physics Workshop

The Organizing and Steering Committees are very pleased to announce the following keynote presentatons at the keynote session:

  1. Alexander Prokhorov, a great scientist, an excellent teacher and а true friend

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      Radik Martirosyan


      National Academy of Sciences, Yerevan, Armenia
  2. OSA's 100 Year Anniversary and an Example for the Surprises Offered by Optics

    Abstract:

    The first part is devoted to the 100th anniversary of the Optical Society (OSA) reminding us of the development from a national to an international learnt society.

    The second part is devoted to an example of how the old discipline optics can hold surprises even today. The example given is related to total internal reflection, the somewhat unusual concept of the transverse optical angular momentum and steering light in different directions [1].

    [1] A Aiello, P Banzer, M Neugebauer and G Leuchs, Nat. Photonics 9, 789 (2015)

LPHYS'16.  Chairpersons:

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    Samvel G. Harutyunyan


    State Committee of Science, Ministry of Education and Science, Yerevan, Armenia
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    Pavel P Pashinin


    A M Prokhorov General Physics Institute, RAS, Moscow, Russia

LPHYS'16.  Steering Committee:

LPHYS'16.    Plenary Speakers:

  1. ICD and Its Exploration by Short, Intense and Coherent Light Pulses

    Abstract:

    How does a microscopic system like an atom or a small molecule get rid of the excess electronic energy it has acquired, for instance, by absorbing a photon? If this microscopic system is isolated, the issue has been much investigated and the answer to this question is more or less well known. But what happens if our system has neighbors as is usually the case in nature or in the laboratory? In a human society, if our stress is large, we would like to pass it over to our neighbors. Indeed, this is in brief what happens also to the sufficiently excited microscopic system. A new mechanism of energy transfer has been theoretically predicted and verified in several exciting experiments. This mechanism seems to prevail "everywhere" from the extreme quantum system of the He dimer to water and even to quantum dots. The transfer is ultrafast and typically dominates other relaxation pathways.

    To exploit the high intensity of laser radiation available today, we also propose to select frequencies at which single-photon absorption is of too low energy and two or more photons are needed to produce states of an atom that can undergo interatomic Coulombic decay (ICD) with its neighbors. The study can provide a hint how the energy deposited by a FEL on one site in a medium can be transferred fast to the surrounding.

    Work on ICD can be found on the ICD Bibliography.

  2. Laser Filamentation: from Basic Physics to Applications

    Abstract:

    Motivated by spectacular applications in the field of atmospheric remote sensing, weather modulation of THz generation, the studies of the filamentation of ultrashort laser pulses also involve a very rich physics. On the microscopic scale, efforts to better describe and model filamentation led to new results regarding strong-field – atom interaction, the role of harmonics in polarization and ionization. Furthermore, filaments exhibit analogies with various physical systems, from spin glasses to rogue waves, offering new connections between these fields of physics, and allowing new descriptions and understanding of nonlinear optics.

  3. Laser Interferometer Gravitational Wave Observatory (LIGO): Machine Review and the Contribution of the Institute of Applied Physics

    Abstract:

    We describe key elements of LIGO detector: interferometer design, laser stabilization, core optics, suspension, seismic isolation, vacuum system, signal search. We discuss what limits the sensitivity of the interferometer and what was measured on . The Institute of Applied Physics (IAP) of the Russian Academy of Sciences has been a member of the LIGO Scientific Collaboration since 1997. We review IAP’s contributions to LIGO: high power Faraday isolators, white light in situ measurement interferometer, active control of thermal lens, remote testing of wave front distortions using self-focusing, remote monitoring of optical surface quality by phase conjugation, detection of contaminations on LIGO mirrors using reflected second harmonic generation.

  4. Laser Modification of Biotissues Structure and Properties in Otolaryngology, Orthopaedics and Ophthalmology

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      Emil N Sobol


      Institute on Laser and Information Technologies, RAS, Troitsk, Moscow, Russia
    Abstract:

    Although lasers used for tissue ablation in surgery for a long time, their application for controllable tissue modification is relatively new and opens new avenues in medicine. In 1992 we identified laser-induced stress relaxation in the biological tissues. This led to the development of a family of novel laser applications for the non-ablative correction of nasal septum shape and eye refraction, making cartilage implants, restoration the joints and intervertebral discs, normalization of the intraocular pressure in glaucomatous eyes. This talk will present state of art and some new results in cartilage and cornea reshaping under thermo-mechanical effect of laser radiation. We will characterize the physical processes and mechanisms involved in the laser-induced modification of tissue nanostructure and stress relaxation. In particular, we will consider theoretical model allowing laser settings optimization for laser-induced formation of nanopore system in the tissues promoting cartilage regeneration and normalization of intraocular pressure. Clinical examples and prospects will be discussed.

LPHYS'16.  Advisory & Program Committee:

LPHYS'16.  Local Organizing Committee:

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    Koryun B. Oganesyan


    Yerevan Physics Institute, A. Alikhanyan National Laboratory, Yerevan, Armenia
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    Levon G. Mardoyan


    State Committee of Science, Ministry of Education and Science, Yerevan, Armenia
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    Nerses S. Ananikyan


    Yerevan Physics Institute, A. Alikhanyan National Laboratory, Yerevan, Armenia
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    Vardan H. Sahakyan


    Yerevan Physics Institute, A. Alikhanyan National Laboratory, Yerevan, Armenia
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    Zhyrair Gevorkian


    Yerevan Physics Institute, A. Alikhanyan National Laboratory, Yerevan, Armenia
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    Armen Derzakyan


    Yerevan Physics Institute, A. Alikhanyan National Laboratory, Yerevan, Armenia
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    Rafik Hakobyan


    Yerevan State University , Yerevan, Armenia
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    Artashes Sargsyan


    Yerevan Physics Institute, A. Alikhanyan National Laboratory, Yerevan, Armenia
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    Ruzan M. Asatryan


    State Committee of Science, Ministry of Education and Science, Yerevan, Armenia
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    Gayane A. Amatuni


    Center for the Advancement of Natural Discoveries using Light Emission (CANDLE Synchrotron Research Institute), Yerevan, Armenia
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    Mary Zazyan


    Yerevan Physics Institute, A. Alikhanyan National Laboratory, Yerevan, Armenia
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    Gayane Grigoryan


    Institute for Physical Research, National Academy of Sciences of Armenia, Ashtarak, Armenia
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    Anahit Gogyan


    Institute for Physical Research, National Academy of Sciences of Armenia, Ashtarak, Armenia
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    Hasmik R. Poghosyan


    Yerevan Physics Institute, A. Alikhanyan National Laboratory, Yerevan, Armenia
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    Marianna Sargsyan


    State Committee of Science, Ministry of Education and Science, Yerevan, Armenia
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    Eghine Kanetsyan


    National University of Architecture and Construction of Armenia, Yerevan, Armenia
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    Elena Apresyan


    Yerevan Physics Institute, A. Alikhanyan National Laboratory, Yerevan, Armenia

LPHYS'16.  Organizers:

LPHYS'16.  Sponsors:

LPHYS'16.  Proceedings:

Proceedings of the 25th annual International Laser Physics Workshop (LPHYS'16, Yerevan, July 11-15, 2016) have been published in Journal of Physics: Conference Series, vol. 826 (2017). To read all contributed papers please visit http://iopscience.iop.org/issue/1742-6596/826/1.