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

https://doi.org/10.1364/OE.23.031991

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 (310 W/cm) 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.

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

https://doi.org/10.1063/1.4817949

On the design of experiments to study extreme field limits

Bulanov, S. S.*; Chen, M.*; Schroeder, C. B.*; Esarey, E.*; Leemans, W. P.*; Bulanov, S. V.; Esirkepov, T. Z.; Kando, Masaki; Koga, J. K.; Zhidkov, A. G.*; et al.

AIP Conference Proceedings 1507, p.825 - 830, 2012/12

https://doi.org/10.1063/1.4773805

Extreme field limits in the interaction of laser light with ultrarelativistic electrons

Bulanov, S. V.; Esirkepov, T. Z.; Hayashi, Yukio; Kando, Masaki; Kiriyama, Hiromitsu; Koga, J. K.; Kondo, Kiminori; Kotaki, Hideyuki; Pirozhkov, A. S.; Bulanov, S. S.*; et al.

AIP Conference Proceedings 1465, p.87 - 96, 2012/07

https://doi.org/10.1063/1.4737545

On the design of experiments for the study of extreme field limits in the interaction of laser with ultrarelativistic electron beam

Bulanov, S. V.; Esirkepov, T. Z.; Hayashi, Yukio; Kando, Masaki; Kiriyama, Hiromitsu; Koga, J. K.; Kondo, Kiminori; Kotaki, Hideyuki; Pirozhkov, A. S.; Bulanov, S. S.*; et al.

Nuclear Instruments and Methods in Physics Research A, 660(1), p.31 - 42, 2011/12

https://doi.org/10.1016/j.nima.2011.09.029

Extreme field science

Bulanov, S. V.; Esirkepov, T. Z.; Hayashi, Yukio; Kando, Masaki; Kiriyama, Hiromitsu; Koga, J. K.; Kondo, Kiminori; Kotaki, Hideyuki; Pirozhkov, A. S.; Bulanov, S. S.*; et al.

Plasma Physics and Controlled Fusion, 53(12), p.124025_1 - 124025_13, 2011/11

https://doi.org/10.1088/0741-3335/53/12/124025

Characterization of electron self-injection in laser wake field acceleration due to the parametric resonance

Zhidkov, A.*; Koga, J. K.; Hosokai, Tomonao*; Fujii, Takashi*; Oishi, Yuji*; Nemoto, Koshichi*; Kodama, Ryosuke*

Physics of Plasmas, 17(8), p.083101_1 - 083101_6, 2010/08

https://doi.org/10.1063/1.3458669

High-power laser-driven source of ultra-short X-ray and gamma-ray pulses

Esirkepov, T. Z.; Bulanov, S. V.; Zhidkov, A.*; Pirozhkov, A. S.; Kando, Masaki

European Physical Journal D, 55(2), p.457 - 463, 2009/11

https://doi.org/10.1140/epjd/e2009-00172-y

Boosted high-harmonics pulse from a double-sided relativistic mirror

Esirkepov, T. Z.; Bulanov, S. V.; Kando, Masaki; Pirozhkov, A. S.; Zhidkov, A.*

Physical Review Letters, 103(2), p.025002_1 - 025002_4, 2009/07

https://doi.org/10.1103/PhysRevLett.103.025002

On the production of flat electron bunches for laser wakefield acceleration

Kando, Masaki; Fukuda, Yuji; Kotaki, Hideyuki; Koga, J. K.; Bulanov, S. V.; Tajima, Toshiki; Chao, A. W.*; Pitthan, R.*; Schuler, K.-P.*; Zhidkov, A. G.*; et al.

Journal of Experimental and Theoretical Physics, 105(5), p.916 - 926, 2007/11

https://doi.org/10.1134/S1063776107110064

We suggest a novel method for injection of electrons into the acceleration phase of particle accelerators, producing low emittance beams appropriate even for the demanding high energy Linear Collider specifications. We discuss the injection mechanism into the acceleration phase of the wake field in a plasma behind a high intensity laser pulse, which takes advantage of the laser polarization and focusing. As shown in three-dimensional particle-in-cell simulations of the interaction of an elongated in transverse direction laser pulse with an underdense plasma, the electrons, injected via the transverse wake wave breaking and accelerated by the wake wave, perform betatron oscillations with different amplitudes and frequencies along the two transverse coordinates. The polarization and focusing geometry lead to a way to produce relativistic electron bunches with asymmetric emittance (flat beam). An approach for generating flat laser accelerated ion beams is briefly discussed.