M. Martyanov
A5073058557- Laser-Matter Interactions and Applications
- Laser-Plasma Interactions and Diagnostics
- Laser Design and Applications
- Particle Accelerators and Free-Electron Lasers
- Solid State Laser Technologies
- Advanced Fiber Laser Technologies
- Magnetic confinement fusion research
- Laser Material Processing Techniques
- Particle accelerators and beam dynamics
- Photorefractive and Nonlinear Optics
- Particle Detector Development and Performance
- Terahertz technology and applications
- Gyrotron and Vacuum Electronics Research
- Photocathodes and Microchannel Plates
- Advanced X-ray Imaging Techniques
- Atomic and Molecular Physics
- Laser-induced spectroscopy and plasma
- Cold Atom Physics and Bose-Einstein Condensates
- Ionosphere and magnetosphere dynamics
- Solar and Space Plasma Dynamics
- bioluminescence and chemiluminescence research
- Spectroscopy and Laser Applications
- Particle physics theoretical and experimental studies
- Quantum optics and atomic interactions
- Radiation Therapy and Dosimetry
Institute of Applied Physics
2005-2024
Russian Academy of Sciences
2005-2023
A.M. Obukhov Institute of Atmospheric Physics
2022
Max Planck Institute for Physics
2017-2021
European Organization for Nuclear Research
2013-2021
Campbell Collaboration
2020
Max Planck Society
2019
Google (United States)
2019
Institute for Physics
2017
University College London
2016
High energy particle accelerators have been crucial in providing a deeper understanding of fundamental particles and the forces that govern their interactions. In order to increase or reduce size accelerator, new acceleration schemes need be developed. Plasma wakefield acceleration, which electrons plasma are excited, leading strong electric fields, is one such promising novel technique. Pioneering experiments shown an intense laser pulse electron bunch traversing plasma, drives fields 10s...
Abstract The eXawatt Center for Extreme Light Studies project aimed to create a large scientific infrastructure based on lasers with giant peak power. relies the significant progress achieved in last decade. planned will incorporate unique light source pulse power of 600 PW using optical parametric chirped amplification large-aperture KD 2 PO 4 , deuterated potassium dihydrogen phosphate crystals. interaction such laser radiation matter represents completely new fundamental physics. direct...
560 TW peak power has been achieved experimentally using a Cr:forsterite master oscillator at 1250 nm, stretcher, three optical parametrical amplifiers based on KD*P crystals providing 38 J energy in the chirped pulse 910 nm central wavelength, and vacuum compressor 43 fs duration. To our knowledge, it is world-record OPCPA system one of five most powerful laser systems currently available.
The Advanced Proton Driven Plasma Wakefield Acceleration Experiment (AWAKE) aims at studying plasma wakefield generation and electron acceleration driven by proton bunches. It is a proof-of-principle R&D experiment CERN the world׳s first experiment. AWAKE will be installed in former CNGS facility uses 400 GeV/c beam bunches from SPS. experiments focus on self-modulation instability of long (rms ~12 cm) bunch plasma. These are planned for end 2016. Later, 2017/2018, low energy (~15 MeV)...
200 TW peak power has been achieved experimentally using a Cr:forsterite master oscillator at 1250 nm, stretcher, three optical parametrical amplifiers based on KD*P (DKDP) crystals providing 14.5 J energy in the chirped pulse 910 nm central wavelength, and vacuum compressor. The final amplifier compressor are described detail. Scaling of such architecture to multipetawatt is discussed.
We give direct experimental evidence for the observation of full transverse self-modulation a long, relativistic proton bunch propagating through dense plasma. The exits plasma with periodic density modulation resulting from radial wakefield effects. show that is seeded by ionization front created using an intense laser pulse copropagating bunch. extends over length following seed point. By varying one order magnitude, we frequency scales expected dependence on density, i.e., it equal to...
The seeded self-modulation of a relativistic, charged particle bunch in plasma is shown to grow both along the and plasma, resulting transverse wakefield amplitudes that far exceed initial seed values.
AWAKE is a proton-driven plasma wakefield acceleration experiment. % We show that the experimental setup briefly described here ready for systematic study of seeded self-modulation 400\,GeV proton bunch in 10\,m-long rubidium with density adjustable from 1 to 10$\times10^{14}$\,cm$^{-3}$. short laser pulse used ionization vapor propagates all way along column, suggesting full vapor. occurs bunch, at time and follows affects bunch.
Abstract It was shown experimentally that for a 65-fs 17-J pulse, the effect of filamentation instability, also known as small-scale self-focusing, is much weaker than predicted by stationary and nonstationary theoretical models high B-integral values. Although this discrepancy has been left unexplained at moment, in practice no signs may allow breakthrough nonlinear pulse post-compression laser energy.
We use a relativistic ionization front to provide various initial transverse wakefield amplitudes for the self-modulation of long proton bunch in plasma. show experimentally that, with sufficient amplitude [$\ensuremath{\ge}(4.1\ifmmode\pm\else\textpm\fi{}0.4)\text{ }\text{ }\mathrm{MV}/\mathrm{m}$], phase modulation along is reproducible from event event, 3%--7% (of $2\ensuremath{\pi}$) rms variations all bunch. The not lower amplitudes. observe transition between these two regimes. Phase...
A new front-end laser system with optical synchronization of chirped femtosecond and pump pulses for the petawatt complex PEtawatt pARametric Laser (PEARL) has been developed. The provides a broader pulse spectrum, temporal shaping pulse, significant increase in stability parametric amplification stages PEARL.
<para xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> Small-scale self-focusing is the main cause of power limitation in nanosecond Nd:glass lasers. We report pioneer observation experiment laser beam noise amplification for <formula formulatype="inline"><tex Notation="TeX">$B$</tex> </formula>-integral (nonlinear phase) order unity, i.e., without destruction nonlinear medium. Analytical dependences coefficient on...
The specific features of experimental implementation a cross-correlator with scan rate above and spatial delay amplitude more than are considered. possibility measuring the width femtosecond pulses propagating in train duration repetition is demonstrated. A time resolution for maximum window attained. aimed at testing 3D laser driver an electron photo-injector.
A method for highly efficient fourth harmonic generation (FHG) retaining spatiotemporal intensity distribution of broadband chirped laser pulses is proposed. It based on the use with linear frequency chirps equal absolute magnitudes and opposite signs at oo-e type noncollinear second generation. Fourth can by obtained classical method, since pulse narrowband spectrally limited. possibility to retain three-dimensional (3D) structure field FHG a conversion efficiency <mml:math...
The use of the post-compression technique ensures gain in laser pulse peak power but at same time degrades beam focusability due to nonlinear wavefront distortions caused by a spatially nonuniform profile. In this paper substantial improvement post-compressed means adaptive optics was demonstrated experimentally. Strehl ratio increase from 0.16 0.43 measured. Simulations showed that intensity case reaches 0.52 theoretical limit.
A five-stage neodymium phosphate glass amplifier producing 1–1.5-ns radiation pulses of energy up to 110 J is described. The use a multistage spatial filter based on an aperture line provides efficient extraction the stored energy. exit filling factor 0.65 and output divergence equal three times diffraction-limited divergence. efficiency conversion second harmonic 60%. intended for pumping chirped-pulse optical parametric amplifier.
We describe spatial filters used in a Nd:glass laser with an output pulse energy up to 300 J and duration of 1 ns. This is designed for pumping chirped-pulse optical parametric amplifier. present data required choose the shape diameter filter lens, taking into account aberrations caused by spherical surfaces. Calculation optimal pinhole presented. Design features procedure their alignment are discussed detail.
We investigated a diode-pumped multipass disk Yb:KGW amplifier intended for amplifying train of 3D ellipsoidal pulses laser driver photocathode linear electron accelerator. The amplification geometry permitted increasing the energy broadband (about 10 nm) with repetition rate 1 MHz from 0.12 µJ to 39 µJ, despite large losses (two orders magnitude) introduced by beam shaper beam. distortions pulse envelope were minimal due optimal delay between moment pump switching on and arrival first train.
All the basic elements of a 300 J/1 ns Nd:glass laser with high-efficiency (70%) frequency conversion are described in detail. These include seed laser, system shaping spatial structure beam, six-cascade amplifier based on neodymium phosphate glass rods 10-100 mm diameter, and second-harmonic generator DKDP crystal ooe interaction. Reliable easy operation guaranteed long-term functioning as pump for output cascade chirped pulse parametric petawatt complex.
The AWAKE experiment requires an automated online rubidium (Rb) plasma density and gradient diagnostic for densities between 1 10⋅1014 cm−3. A linear along the source at percent level may be useful to improve electron acceleration process. Because of full laser ionization Rb vapor Rb+ within a radius mm, equals density. We measure both ends source, with high precision using, white light interferometry. At either end, broadband passes remotely controlled Mach–Zehnder interferometer built out...
The nonlinear nature of laser pulse post-compression inevitably leads to wavefront distortions. These distortions are nonstationary, i.e., they vary during the pulse, which significantly complicates use adaptive optics. We propose four approaches compensation by means standard mirrors, three can be implemented experimentally. Numerical simulations show that these allow achieving a focal spot intensity close case perfectly flat wavefront.
The AWAKE Collaboration has been formed in order to demonstrate proton-driven plasma wakefield acceleration for the first time. This technique could lead future colliders of high energy but a much reduced length when compared proposed linear accelerators. CERN SPS proton beam CNGS facility will be injected into 10 m cell where long bunches modulated significantly shorter micro-bunches. These micro-bunches then initiate strong with peak fields above 1 GV/m that harnessed accelerate bunch...