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Volume 42, Issue 2
Special Issue on High Power Laser Facilities in Europe
Displaying 1-17 of 17 articles from this issue
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Special Issue on Frontier of Ultra-High Power Lasers in Europe
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[in Japanese]2014 Volume 42 Issue 2 Pages 106-
Published: 2014
Released on J-STAGE: September 07, 2020
JOURNAL FREE ACCESSAn instantaneous peak power generated with the advanced laser technology reached over peta-watt (PW, 1015 W) now. The focused intensity is possibly in the ultra-relativistic region, which opens a new experimental research. Some attractive themes are introduced.View full abstractDownload PDF (397K)
Special Issue
Laser Review
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Toshiki TAJIMA2014 Volume 42 Issue 2 Pages 111-
Published: 2014
Released on J-STAGE: September 07, 2020
JOURNAL FREE ACCESSDownload PDF (87K) -
Ken-ichi UEDA2014 Volume 42 Issue 2 Pages 113-
Published: 2014
Released on J-STAGE: September 07, 2020
JOURNAL FREE ACCESSLaser science and technology is recognized as one of the “Key Enable Technologies” in Europe, which can open next generation of sciences and industries in comming 10-20 years. Accoring this line, there are many active programs on high power laser development and applications. The activities in LASERLAB Euro, ELI, IZEST, XCLES and laser fusion programs are introduced. They challenge 200 PW in peak power for ultra-relativistic optics and 100 GeV to TeV particle acceleration. They expect new fronts on attosecond science, nuclear physics, and even nonlinear vacuum physics. I introduce the real activities of European laser facilities and compare the difference of background culture and scope on the future laser development between Eu and Japan. We can learn how to organize a long-term research and education progam under international collaboration networking.View full abstractDownload PDF (5493K) -
Masakatsu MURAKAMI2014 Volume 42 Issue 2 Pages 120-
Published: 2014
Released on J-STAGE: September 07, 2020
JOURNAL FREE ACCESSSince T. Maiman invented laser a half century ago, the technology has been made rapid progress. Today extremely intense laser with > 1024 W/cm2 is expected to open new paradigm of such high fi eld science as ion acceleration in ultrarelativistic regime, attosecond physics, and nonlinear QED with high potential for broad applications. A tight race is now running all over the world to develop large research infrastructures of Exawatt-class laser. Such European high power laser projects as ELI, IZEST, and XCELS, that are in progress, are overviewed.View full abstractDownload PDF (980K) -
Daniel URSESCU, Ovidiu TESILEANU, Mihail O. CERNAIANU, Sydney GALES, ...2014 Volume 42 Issue 2 Pages 123-
Published: 2014
Released on J-STAGE: September 07, 2020
JOURNAL FREE ACCESSExtreme Light Infrastructure (ELI) is a pan European research initiative selected on the European Strategy Forum on Research Infrastructures Roadmap that aims to build a European Large-scale Facility devoted to ultra intense laser and gamma beams interaction with matter. We report on the status of Extreme Light Infrastructure - Nuclear Physics (ELI-NP) facility, one of the three ELI pillars under construction, to be operational in 2018. Placed in Romania, ELI-NP has as core elements a couple of new generation 10 PW laser systems and a narrow bandwidth Compton backscattering gamma source with photon energies up to 19 MeV. ELI-NP will address nuclear photonics, nuclear astrophysics and quantum electrodynamics involving extreme photon fi elds. Applications in nuclear medicine, in detection and characterization of nuclear materials and in material science with positron sources are foreseen.View full abstractDownload PDF (532K) -
Catherine LE BLANC, Dimitrios PAPADOPOULOS, Gilles CHÉRIAUX, Patrick G ...2014 Volume 42 Issue 2 Pages 127-
Published: 2014
Released on J-STAGE: September 07, 2020
JOURNAL FREE ACCESSThe Apollon-10P is a laser infrastructure aiming to realize experiments at 10 PW peak power. It will be used to drive ultra-intense and ultra-short sources of particles (electrons, protons...), and for the generation of coherent and high energetic X rays. This laser facility is a multi beam line composed of one main laser expected to deliver on target 10 PW pulses at 1 shot per minute repetition rate (150 J in 15 fs at 800 nm), a 1 PW beam line, a probe with 10 TW and an uncompressed beam with an energy up to 250 J.View full abstractDownload PDF (999K) -
Jean-Luc MIQUEL, Dimitri BATANI, Nathalie BLANCHOT2020 Volume 42 Issue 2 Pages 131-
Published: 2020
Released on J-STAGE: September 07, 2020
JOURNAL FREE ACCESSThe Laser Megajoule (LMJ) developed by the Commissariat à l’Energie Atomique et aux Energies Alternatives (CEA), will be a cornerstone of the French Simulation Program, which combines improvement of physics models, high performance numerical simulation, and experimental validation. LMJ is under construction at CEA CESTA at a primary stage of 1.5 MJ, 370 TW and 176 beams. LMJ will perform High Energy Density Physics (HEDP) experiments starting from the end of 2014. One of LMJ’s main goals is to obtain ignition and burn of DT-fi lled capsule imploded, through indirect drive scheme, inside rugby-shape hohlraum. The PETAL project consists in the addition of one short-pulse (500 fs to 10 ps) ultra-high-power, high-energy beam (few kJ) to LMJ. PETAL will offer a combination of a very high intensity multi-petawatt beam, synchronized with the nanosecond beams of LMJ. PETAL will expand the LMJ experimental fi eld on HEDP.View full abstractDownload PDF (660K) -
Marco GALIMBERTI, Ian MUSGRAVE, Alexis BOYLE, Cristina HERNANDEZ-GOMEZ ...2014 Volume 42 Issue 2 Pages 137-
Published: 2014
Released on J-STAGE: September 07, 2020
JOURNAL FREE ACCESSWe present the progress on the development of a high energy front-end capable of delivering pulses with energy over 7 J and bandwidth over 150 nm around the central wavelength of 910 nm. This system is composed of three stages: a seed generation using ps OPA techniques, a high repetition rate amplifi cation stage using OPCPA with LBO and an high energy stage using OPCPA with KD*P. This front-end is characterized by high contrast, good compressibility and proper achromatic propagation system.View full abstractDownload PDF (1212K) -
Andrey SHAYKIN, Igor KOSTYUKOV, Alexander SERGEEV, Efim KHAZANOV2014 Volume 42 Issue 2 Pages 141-
Published: 2014
Released on J-STAGE: September 07, 2020
JOURNAL FREE ACCESSThe goal of the XCELS project in Russia is establishing a large research infrastructure ‒ the Exawatt Center for Extreme Light Studies. The core of the planned infrastructure will be a new unique source of light having the power of about 0.2 Exawatt. This source constitutes a 12 channel × 15 PW laser system based on technique of optical parametric chirped pulse amplifi cation (OPCPA). The corresponding laser architecture was developed at the Institute of Applied Physics in Nizhny Novgorod where the fi rst Petawatt-class OPCPA laser in the world, called PEARL, was launched in 2007 and a multi-Petawatt system is now under construction. The fundamental processes of laser-matter interaction at Exawatt power belong to an absolutely new branch of science that will be the principal research task of the infrastructure. There will open up opportunities for studying the space-time structure of vacuum, nonlinear QED phenomena and unknown processes at the interface of the high-energy physics and the high-fi eld physics.View full abstractDownload PDF (1600K) -
Tomas MOCEK, Akira ENDO, Antonio LUCIANETTI, Danijela ROSTOHAR2014 Volume 42 Issue 2 Pages 145-
Published: 2014
Released on J-STAGE: September 07, 2020
JOURNAL FREE ACCESSThe main goal of HiLASE project (High average power pulsed LASErs) is to create a solid platform for development of advanced DPSSLs in the Czech Republic. Two key concepts are being explored within HiLASE: thin-disk laser amplifi ers to reach kW average output power, and cryogenically cooled multislab laser amplifi ers to reach 100 J at 10 Hz output, scalable to kJ regime. There are three separate thindisk beamlines under construction with different output parameters: Beamline A (750 mJ, 1.75 kHz, 3 ps), Beamline B (500 mJ, 1 kHz, 2 ps), and Beamline C (5 mJ, 100 kHz, 1 ps). In addition, a singlebeam 100 J class nanosecond laser system based on a gas-cooled cryogenic, diode-pumped Yb:YAG multi-slab architecture with wall-plug effi ciency >12% and repetition rates up to 10 Hz is now under construction and will be commissioned by August 2015. DPSSL systems deployed in the HiLASE facility shall be at a disposal of external users for testing and prototyping of various laser technologies, and for contract research and development.View full abstractDownload PDF (717K) -
William S. BROCKLESBY, Gerard MOUROU, Toshiki TAJIMA, Jens LIMPERT2014 Volume 42 Issue 2 Pages 149-
Published: 2014
Released on J-STAGE: September 07, 2020
JOURNAL FREE ACCESSThe ICAN project has developed a design for a high pulse energy laser which also has high average power and high efficiency. An outline of the design is given, and the potential applications for such a laser are discussed. The existence of a laser with these combined properties will hugely increase the applications feasible for petawatt lasers.View full abstractDownload PDF (1027K)
Laser Original
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Yoshitaka MORI, Takashi SEKINE, Osamu KOMEDA, Yasuhiko NISHIMURA, Eisu ...2014 Volume 42 Issue 2 Pages 154-
Published: 2014
Released on J-STAGE: September 07, 2020
JOURNAL FREE ACCESSWe describe a repetitive fast-heating fusion driver called HAMA pumped by Diode Pumped Solid State Laser (DPSSL) to realize the counter irradiation of sequential implosion and heating laser beams. HAMA was designed to activate DPSSL for inertial confi nement fusion (ICF) research and to realize a unifi ed ICF machine for power plants. The details of a four-beam alignment scheme and the results of the counter irradiation of stainless plates are shown.View full abstractDownload PDF (882K) -
Akito SAGISAKA, Alexander S. PIROZHKOV, Mamiko NISHIUCHI, Koichi OGURA ...2014 Volume 42 Issue 2 Pages 160-
Published: 2014
Released on J-STAGE: September 07, 2020
JOURNAL FREE ACCESSWe have measured the proton yield from thin-foil targets irradiated with a high-intensity Ti:sapphire laser. The longitudinal extent of the preformed plasma protruding from the front surface of the target is reduced by decreasing the duration of the amplified spontaneous emission (ASE) before the main pulse. The maximum proton energy in the target normal direction increases when the size of the preformed plasma is controlled.View full abstractDownload PDF (357K) -
Hironao SAKAKI, Tatsuhiko SATO, Tetsuya KAI2014 Volume 42 Issue 2 Pages 163-
Published: 2014
Released on J-STAGE: September 07, 2020
JOURNAL FREE ACCESSA general-purpose Monte Carlo particle and heavy ion transport code system (PHITS), which consists of various quantum dynamics models, was used to study laser-driven ion acceleration. Our simulation reasonably predicted not only the laser-driven ion's trajectories detected by the monitors but also the radiation shielding of these particles.View full abstractDownload PDF (1095K) -
Masato KANASAKI, Yuji FUKUDA, Kiminori Kondo, Keiji ODA, Tomoya YAMAUC ...2014 Volume 42 Issue 2 Pages 168-
Published: 2014
Released on J-STAGE: September 07, 2020
JOURNAL FREE ACCESSIn laser-driven ion acceleration experiments using cluster-gas targets, a significant amount of fast electrons are produced that drive ion acceleration along with high energy ions with several-tens of MeV. In our recent experiment using CO2 clusters embedded in H2 gas conducted with the J-KAREN laser facility (1 J, 40 fs) at JAEA-KPSI, the energy of the electrons reached as high as 200 MeV. Such fast electrons can produce photo-neutrons by bremsstrahlung processes followed by (γ , n) reactions. When the CR-39 nuclear track detector is exposed to such photo-neutrons, it records the etchable tracks of recoiled protons depending on their energy as unwanted background signals. To precisely diagnose laser-accelerated protons using CR-39, we have developed the discrimination method for laseraccelerated protons and photo-neutrons on CR-39 based on the incident angle and the incident energy.View full abstractDownload PDF (639K) -
Keita SETO, James KOGA, Sen ZHANG2014 Volume 42 Issue 2 Pages 174-
Published: 2014
Released on J-STAGE: September 07, 2020
JOURNAL FREE ACCESSRadiation reaction is one of the remaining big problems in theoretical physics. When an electron has high energy, radiation from this electron might become significant. Since this regime involves laser intensities over 1022 W/cm2, we need to consider it under next generation laser-electron interactions. Moreover, radiation reaction is considered to represent the electron model in classical physics. Therefore, research into ultrahigh intense laser-high energy electron interactions has the potential to take us to the center and essence of physics. However, the Lorentz-Abraham-Dirac theory, which is the standard model of radiation reaction, has the difficulty of the run-away solution. In this paper, the history of the research of radiation reaction, our recent studies and the experimental design of this process will be presented.View full abstractDownload PDF (886K) -
Junji KAWANAKA, Hidetsugu YOSHIDA, Koji TSUBAKIMOTO, Kana FUJIOKA, Hid ...2014 Volume 42 Issue 2 Pages 179-
Published: 2014
Released on J-STAGE: September 07, 2020
JOURNAL FREE ACCESSA 50 PW, 10 fs ultrahigh-peak-power laser has been conceptually designed. The system is based on optical parametric chirped pulse amplifi cation. A 250 J DPSSL and a fl ash-lamp-pumped kJ laser, and a broadband OPCPA chain with partially deuterated KDP（pDKDP）crystals are designed as new repeatable pump sources and a few-cycle pulse amplifier, respectively. The pDKDP has been successfully grown at several different deuteration ratios. A broadband grating with high diffraction effi ciency in the compressor is under designing.View full abstractDownload PDF (2399K)
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