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Journal Articles

Laser wakefield accelerated electron beam monitoring and control

Koga, J. K.; Mori, Michiaki; Kotaki, Hideyuki; Bulanov, S. V.; Esirkepov, T. Z.; Kiriyama, Hiromitsu; Kando, Masaki

AIP Conference Proceedings 1721, p.050003_1 - 050003_8, 2016/03

Journal Articles

Revealing the second harmonic generation in a femtosecond laser-driven cluster-based plasma by analyzing shapes of Ar XVII spectral lines

Oks, E.*; Dalimier, E.*; Faenov, A.*; Pikuz, T.*; Fukuda, Yuji; Andreev, A.*; Koga, J. K.; Sakaki, Hironao; Kotaki, Hideyuki; Pirozhkov, A. S.; et al.

Optics Express (Internet), 23(25), p.31991 - 32005, 2015/12

 Times Cited Count:5 Percentile:60.78(Optics)

We present experiments dealing with a femtosecond laser-driven cluster-based plasma, where by analyzing the nonlinear phenomenon of satellites of spectral lines of Ar XVII, we revealed the nonlinear phenomenon of the generation of the second harmonic of the laser frequency. For performing this analysis we developed new results in the theory of satellites of spectral lines. From such lineshape analysis we found, in particular, that the efficiency of converting the short (40 fs) intense (3$$times$$10$$^{18}$$ W/cm$$^2$$) incident laser light into the second harmonic was 2%. This result is in the excellent agreement with the 2-Dimensional Particle-In-Cell (2D PIC) simulation that we also performed. There is also an order of magnitude agreement between the thresholds for the SHG found from the line shape analysis and from the 2D PIC simulations.

Journal Articles

Attractors and chaos of electron dynamics in electromagnetic standing waves

Esirkepov, T. Z.; Bulanov, S. S.*; Koga, J. K.; Kando, Masaki; Kondo, Kiminori; Rosanov, N. N.*; Korn, G.*; Bulanov, S. V.

Physics Letters A, 379(36), p.2044 - 2054, 2015/09

 Times Cited Count:35 Percentile:9.41(Physics, Multidisciplinary)

Journal Articles

Direct observation of the pulse width of an ultrashort electron beam

Kotaki, Hideyuki; Kawase, Keigo*; Hayashi, Yukio; Mori, Michiaki; Kando, Masaki; Koga, J. K.; Bulanov, S. V.

Journal of the Physical Society of Japan, 84(7), p.074501_1 - 074501_5, 2015/07

 Times Cited Count:5 Percentile:50.33(Physics, Multidisciplinary)

Journal Articles

Stochastic regimes in the driven oscillator with a step-like nonlinearity

Bulanov, S. V.; Yogo, Akifumi*; Esirkepov, T. Z.; Koga, J. K.; Bulanov, S. S.*; Kondo, Kiminori; Kando, Masaki

Physics of Plasmas, 22(6), p.063108_1 - 063108_11, 2015/06

 Times Cited Count:7 Percentile:52.67(Physics, Fluids & Plasmas)

Journal Articles

High-order harmonics from relativistic laser plasmas

Bulanov, S. V.; Esirkepov, T. Z.; Koga, J. K.; Pirozhkov, A. S.; Kondo, Kiminori; Kando, Masaki

Research Using Extreme Light; Entering New Frontiers with Petawatt-Class Lasers II (Proceedings of SPIE, Vol.9515), p.95150C_1 - 95150C_13, 2015/06

 Times Cited Count:0 Percentile:100

Journal Articles

High-contrast, high-intensity petawatt-class laser and applications

Kiriyama, Hiromitsu; Mori, Michiaki; Pirozhkov, A. S.; Ogura, Koichi; Sagisaka, Akito; Kon, Akira; Esirkepov, T. Z.; Hayashi, Yukio; Kotaki, Hideyuki; Kanasaki, Masato*; et al.

IEEE Journal of Selected Topics in Quantum Electronics, 21(1), p.1601118_1 - 1601118_18, 2015/01

 Times Cited Count:48 Percentile:3.36(Engineering, Electrical & Electronic)

This paper reviews the development of a high-contrast high-intensity petawatt-class Ti:sapphire chirped-pulse amplification (CPA) laser for research on high field science. We discuss in detail the design, performance and characterization of the laser. We also describe the on-going upgrade of the laser system and some applications for the laser in relativistic dominated laser-matter interactions.

Journal Articles

On the problems of relativistic laboratory astrophysics and fundamental physics with super powerful lasers

Bulanov, S. V.; Esirkepov, T. Z.; Kando, Masaki; Koga, J. K.; Kondo, Kiminori; Korn, G.*

Plasma Physics Reports, 41(1), p.1 - 51, 2015/01

 Times Cited Count:62 Percentile:1.12(Physics, Fluids & Plasmas)

Journal Articles

High order harmonics from relativistic electron spikes

Pirozhkov, A. S.; Kando, Masaki; Esirkepov, T. Z.; Faenov, A. Y.*; Pikuz, T. A.*; Kawachi, Tetsuya; Sagisaka, Akito; Koga, J. K.; Mori, Michiaki; Kawase, Keigo*; et al.

RAL-TR-2015-025, P. 22, 2015/00

Journal Articles

High order harmonics from relativistic electron spikes

Pirozhkov, A. S.; Kando, Masaki; Esirkepov, T. Z.; Gallegos, P.*; Ahmed, H.*; Ragozin, E. N.*; Faenov, A. Ya.*; Pikuz, T. A.*; Kawachi, Tetsuya; Sagisaka, Akito; et al.

New Journal of Physics (Internet), 16(9), p.093003_1 - 093003_30, 2014/09

 Times Cited Count:22 Percentile:20.08(Physics, Multidisciplinary)

Journal Articles

Prepulse and amplified spontaneous emission effects on the interaction of a petawatt class laser with thin solid targets

Esirkepov, T. Z.; Koga, J. K.; Sunahara, Atsushi*; Morita, Toshimasa; Nishikino, Masaharu; Kageyama, Kei*; Nagatomo, Hideo*; Nishihara, Katsunobu; Sagisaka, Akito; Kotaki, Hideyuki; et al.

Nuclear Instruments and Methods in Physics Research A, 745, p.150 - 163, 2014/05

 Times Cited Count:32 Percentile:3.01(Instruments & Instrumentation)

Journal Articles

Radiation reaction effects in cascade scattering of intense, tightly focused laser pulses by relativistic electrons; Classical approach

Zhidkov, A.*; Masuda, Shinichi*; Bulanov, S. S.*; Koga, J. K.; Hosokai, Tomonao*; Kodama, Ryosuke*

Physical Review Special Topics; Accelerators and Beams, 17(5), p.054001_1 - 054001_7, 2014/05

 Times Cited Count:10 Percentile:33.91(Physics, Nuclear)

Journal Articles

Stabilization of radiation reaction with vacuum polarization

Seto, Keita*; Zhang, S.*; Koga, J. K.; Nagatomo, Hideo*; Nakai, Mitsuo*; Mima, Kunioki*

Progress of Theoretical and Experimental Physics (Internet), 2014(4), p.043A01_1 - 043A01_10, 2014/04

 Times Cited Count:9 Percentile:37.48(Physics, Multidisciplinary)

Journal Articles

Delbr$"{u}$ck scattering calculation using the LoopTools package

Koga, J. K.; Hayakawa, Takehito

JPS Conference Proceedings (Internet), 1, p.016008_1 - 016008_4, 2014/03

Journal Articles

Possibility of radiation reaction observation under ultraintense laser

Seto, Keita*; Koga, J. K.; Zhang, S.*

Reza Kenkyu, 42(2), p.174 - 178, 2014/02

Journal Articles

Theoretical study of ultrarelativistic laser-electron interaction with radiation reaction

Seto, Keita*; Nagatomo, Hideo*; Koga, J. K.; Taguchi, Toshihiro*; Mima, Kunioki*

EPJ Web of Conferences, 59, p.17020_1 - 17020_4, 2013/11

 Times Cited Count:0 Percentile:100

Journal Articles

Nonlinear plasma wave in magnetized plasmas

Bulanov, S. V.; Esirkepov, T. Z.; Kando, Masaki; Koga, J. K.; Hosokai, Tomonao*; Zhidkov, A.*; Kodama, Ryosuke*

Physics of Plasmas, 20(8), p.083113_1 - 083113_10, 2013/08

 Times Cited Count:15 Percentile:35.69(Physics, Fluids & Plasmas)

Journal Articles

Controlling the generation of high frequency electromagnetic pulses with relativistic flying mirrors using an inhomogeneous plasma

Lobet, M.*; Kando, Masaki; Koga, J. K.; Esirkepov, T. Z.; Nakamura, Tatsufumi; Pirozhkov, A. S.; Bulanov, S. V.

Physics Letters A, 377, p.1114 - 1118, 2013/06

 Times Cited Count:11 Percentile:35.84(Physics, Multidisciplinary)

A method for the controlled generation of intense high frequency electromagnetic fields by a breaking Langmuir wave (relativistic flying mirrors) in a gradually inhomogeneous plasma is proposed. The wave breaking threshold depends on the local plasma density gradient. Compression, chirping and frequency multiplication of an electromagnetic wave reflected from relativistic mirrors is demonstrated using Particle-In-Cell simulations. Adjusting the shape of the density profile enables control of the reflected light properties.

Journal Articles

On extreme field limits in high power laser matter interactions; Radiation dominant regimes in high intensity electromagnetic wave interaction with electrons

Bulanov, S. V.; Esirkepov, T. Z.; Kando, Masaki; Koga, J. K.; Nakamura, Tatsufumi; Bulanov, S. S.*; Zhidkov, A.*; Kato, Yoshiaki; Korn, G.*

High-Power, High-Energy, and High-Intensity Laser Technology; and Research Using Extreme Light: Entering New Frontiers with Petawatt-Class Lasers (Proceedings of SPIE, Vol.8780), p.878015_1 - 878015_15, 2013/05

 Times Cited Count:8 Percentile:2.92

Journal Articles

Radiation reaction in ultrarelativistic laser-spinning electron interactions

Seto, Keita*; Nagatomo, Hideo*; Koga, J. K.; Mima, Kunioki*

Progress of Theoretical and Experimental Physics (Internet), 2013(5), p.053A01_1 - 053A01_10, 2013/05

 Times Cited Count:1 Percentile:86.51(Physics, Multidisciplinary)

260 (Records 1-20 displayed on this page)