Kansai Photon Science Institute 　|　High-Intensity Laser Science Group

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Department of Advanced Photon Research

High-Intensity Laser Science Group

Leader: KANDO Masaki

Group members

Former member

Research topics

1. Laser-driven quantum beam geneartion

We study on the generation of quantume beams such as high-energy ions, electrons, X-rays etc., which are accelerated by a high electric fields when a high-peak power, short-pulse laser is foucsed to a small spot.
Carbon ions are of interest for downsizing existing cancer therapy machines and we are developing a laser based injector under the new concept "Quantum Scalpel". Heavy ions are also important for nuclear physics. 

Laser electron acceleration is studied to realize a compact X-ray free-electron laser system and a compact gamma-ray source for science and industry.

2. Ultra-High Field Science

We achieved a focused intensity of ~10²² W/cm², which was the highest intensity in the world in 2017. With this intensity or higher, we explore new phenomena explored theoretically, numerically, and experimentally. 

3. Upgrade and Improvements of J-KAREN-P Laser

In collaboration with Advanced Laser Group, we continuously improve and upgrade the performance of J-KAREN-P laser. The J-KAREN-P laser is based on double chirped pulse amplification (CPA) to produce high-contrast, high-intensitiy laser pulses at 0.1 Hz.

Some selected publications (peer-reviewed)

2022

• Experimental demonstration of 7-femtosecond electron timing fluctuation in laser wakefield acceleration
  Kai Huang, Zhan Jin, Nobuhiko Nakanii, Tomonao Hosokai, Masaki Kando
  Appl. Phys. Exp. 15, 036001 (2022).
  https://doi.org/10.35848/1882-0786/ac5237

2021

• Relativistic flying laser focus by a laser-produced parabolic plasma mirror
  Tae Moon Jeong, Sergei V. Bulanov, Petr Valenta, Georg Korn, Timur Zh. Esirkepov, James K. Koga, Alexander S. Pirozhkov, Masaki Kando, and Stepan S. Bulanov
  Phys. Rev. A 104, 053533 (2021). https://doi.org/10.1103/PhysRevA.104.053533
   
• Gamma factory searches for extremely weakly interacting particles​s
  Sreemanti Chakraborti, Jonathan L. Feng, James K. Koga, and Mauro Valli, 
  Phys. Rev. D 104, 055023 (2021). https://doi.org/10.1103/PhysRevD.104.055023
   
• Denoising application for electron spectrometer in laser-driven ion acceleration using a Simulation-supervised Learning based CDAE 
  Tatsuhiko Miyatake, Keiichiro Shiokawa, Hironao Sakaki, Nicholas P. Dover, Mamiko Nishiuchi, Hazel F. Lowe, Kotaro Kondo, Akira Kon, Masaki Kando, Kiminori Kondob, Yukinobu Watanabe
  Nucl. Instru. Meth. A 999, 165227 (2021). https://doi.org/10.1016/j.nima.2021.165227

• Proton beam quality enhancement by spectral phase control of a PW-class laser system 
  T. Ziegler, D. Albach, C. Bernert, S. Bock, F.-E. Brack, T. E. Cowan, N. P. Dover, M. Garten, L. Gaus, R. Gebhardt, I. Goethel, U. Helbig, A. Irman, H. Kiriyama, T. Kluge, A. Kon, S. Kraft, F. Kroll, M. Koeser, J. Metzkes-Ng, M. Nishiuchi, L. Obst-Huebl, T. Püschel, M. Rehwald, H.-P. Schlenvoigt, U. Schramm, & K. Zeil
  Scientific Reports 11, 7338 (2021). https://www.nature.com/articles/s41598-021-86547-x

​2020

• Characterization of Accumulated B-Integral of Regenerative Amplifier Based CPA Systems
  S. Bock, F. M. Herrmann, T. Püschel, U. Helbig, R. Gebhardt, J. J. Lötfering, R. Pausch, K. Zeil, T. Ziegler, A. Irman, T. Oksenhendler, A. Kon, M. Nishuishi, H. Kiriyama, K. Kondo, T. Toncian, and U. Schramm, Crystals 10, 1 (2020). https://doi.org/10.3390/cryst10090847
   
• Relativistic Flying Forcibly Oscillating Reflective Diffraction Grating
  Jie Mu, T. Zh. Esirkepov, Petr Valenta, Yanjun Gu, Tae Moon Jeong, Alexander S. Pirozhkov, James K. Koga, Masaki Kando, Georg Korn, and Sergei V. Bulanov, Phys. Rev. E, 102, 053202 (2020). https://doi.org/10.1103/PhysRevE.102.053202
   
• Electron-Positron Pair Creation in the Electric Fields Generated by Micro-bubble Implosions 
  James K. Koga, Masakatsu Murakami, Alexey V. Arefiev, Yoshihide Nakamiya, Stepan S. Bulanov, Sergei V. Bulanov, Physics Letters A　384, 126854 (2020). 
  https://doi.org/10.1016/j.physleta.2020.126854
   
• Ion species discrimination method by linear energy transfer measurement in Fujifilm BAS-SR Imaging Plate
  M. Nishiuchi, H. Sakaki, N. P. Dover, T. Miyahara, K. Shiokawa, S. Manabe, T. Miyatake, Ko. Kondo, Ke. Kondo, Y. Iwata, Y. Watanabe, and Ki. Kondo , Rev. Sci. Instru. 91, 093305 (2020). 
  https://doi.org/10.1063/5.0016515
• High intensity laser driven oxygen source from CW laser heated Ti tape targets
  Kotaro Kondo, Mamiko Nishiuchi, Hironao Sakaki, Nicholas P. Dover, Hazel F. Lowe, Takumi Miyahara, Yukinobu Watanabe, Tim Ziegler, Karl Zeil, Ulrich Schramm, Emma J. Ditter, George S. Hicks, Oliver C. Ettlinger, Zulfikar Najmudin, Hiromitsu Kiriyama, Masaki Kando and Kiminori Kondo, Crystals 10, 837 (2020). 
  https://doi.org/10.3390/cryst10090837
   
• Topological investigation of laser ion acceleration
  T. Morita, Plasma Phys. Control. Fusion 62, 105003 (2020).
  https://dx.doi.org/10.1088/1361-6587/aba766
   
• New algorithm using L1 regularization for measuring electron energy spectra
  Hironao Sakaki, Tomohiro Yamashita, Takashi Akagi, Mamiko Nishiuchi, Nicholas P. Dover, Hazel F. Lowe, Kotaro Kondo, Akira Kon, Masaki Kando, Yasuhiko Tachibana, Takayuki Obata, Keiichiro Shiokawa, Tatsuhiko Miyatake, and Yukinobu Watanabe, Review of Scientific Instruments 91, 075116 (2020).
  https://doi.org/10.1063/1.5144897
   
• Single-shot electro-optic sampling on the temporal structure of laser wakefield accelerated electrons
  Kai Huang, Hideyuki Kotaki, Michiaki Mori, Yukio Hayashi, Nobuhiko Nakanii and Masaki Kando, Crystals 2020, 10(8), 640 (2020).
  https://doi.org/10.3390/cryst10080640
   
• Single-shot measurement of post-pulse-generated pre-pulse
  Akira Kon, Mamiko Nishiuchi, Hiromitsu Kiriyama, Masaki Kando, Stefan Bock, Tim Ziegler, Thomas Pueschel, Karl Zeil, Ulrich Schramm and Kiminori Kondo, Crystals, 10(8), 657 (2020).
  https://doi.org/10.3390/cryst10080657
   
• Dynamics of laser-driven heavy-ion acceleration clarified by ion charge states
  M. Nishiuchi, N. P. Dover, M. Hata, H. Sakaki, Ko. Kondo, H. F. Lowe, T. Miyahara, H. Kiriyama, J. K. Koga, N. Iwata, M. A. Alkhimova, A. S. Pirozhkov, A. Ya. Faenov, T. A. Pikuz, A. Sagisaka, Y. Watanabe, M. Kando, K. Kondo, E. J. Ditter, O. C. Ettlinger, G. S. Hicks, Z. Najmudin, T. Ziegler, K. Zeil, U. Schramm and Y. Sentoku, Phys. Rev. Research 2, 033081 (2020).
  https://doi.org/10.1103/PhysRevResearch.2.033081
   
• Status and progress of the J-KAREN-P high intensity laser system at QST
  Hiromitsu Kiriyama, Alexander, S. Pirozhkov, Mamiko Nishiuchi, Yuji Fukuda, Koichi Ogura, Akito Sagisaka, Yasuhiro Miyasaka, Hironao Sakaki, Nicholas P. Dover, Kotaro Kondo, Hazel F. Lowe, Akira Kon, James K. Koga, Timur Zh. Esirkepov, Nobuhiko Nakanii, Kai Huang, Masaki Kando, Kiminori Kondo, High Energy Density Physics 36, 100771 (2020). https://doi.org/10.1016/j.hedp.2020.100771 
   
• Observation of Burst Intensification by Singularity Emitting Radiation generated from relativistic plasma with a high-intensity laser
  A. Sagisaka, K. Ogura, T. Zh. Esirkepov, D. Neely, T. A. Pikuz, J. K. Koga, Y. Fukuda, H. Kotaki, Y. Hayashi, B. Gonzalez-Izquierdo, K. Huang, S. V. Bulanov, H. Kiriyama, K. Kondo, T. Kawachi, M. Kando, A. S. Pirozhkov, High Energy Density Physics, 36, 100751 (2020). https://doi.org/10.1016/j.hedp.2020.100751
   
• Light scattering by 4π-spherically-focused ultra-strong light field
  Tae Moon Jeong, Sergey Bulanov, Pavel V. Sasorov, Georg Korn, James Kevin Koga, Stepan S. Bulanov, Phys. Rev. A 28 (9), pp. 13991–14006 (2020).https://doi.org/10.1364/OE.387654
   
• Recoil effects on reflection from relativistic mirrors in laser plasmas
  P. Valenta, T. Zh. Esirkepov, J. K. Koga, A. S. Pirozhkov, M. Kando, T. Kawachi, Y.-K. Liu, P. Fang, P. Chen, J. Mu, G. Korn, O. Klimo, and S. V. Bulanov, Physics of Plasmas 27, 032109 (2020). https://doi.org/10.1063/1.5142084
   
• Optical probing of relativistic plasma singularities
  Timur Zh. Esirkepov, Jie Mu, Yanjun Gu, Tae Moon Jeong, Petr Valenta, Ondrej Klimo, James K. Koga, Masaki Kando, David Neely, Georg Korn, Sergei V. Bulanov, and Alexander S. Pirozhkov, Physics of Plasmas 27, 052103 (2020). https://doi.org/10.1063/5.0004525
   
• Characterization of ionization injection in gas mixtures irradiated by subpetawatt class laser pulses
  A. Zhidkov, N. Pathak, J. K. Koga, K. Huang, M. Kando, and T. Hosokai, Phys. Rev. Research 2, 013216 (2020). https://doi.org/10.1103/PhysRevResearch.2.013216
   
• Effect of Small Focus on Electron Heating and Proton Acceleration in Ultrarelativistic Laser-Solid Interactions
  N. P. Dover, M. Nishiuchi, H. Sakaki, Ko. Kondo, M. A. Alkhimova, A. Ya. Faenov, M. Hata, N. Iwata, H. Kiriyama, J. K. Koga, T. Miyahara, T. A. Pikuz, A. S. Pirozhkov, A. Sagisaka, Y. Sentoku, Y. Watanabe, M. Kando, and K. Kondo, Phys. Rev. Lett. 124, 084802 (2020). https://doi.org/10.1103/PhysRevLett.124.084802

   2019年

• Variation in electron emission time in weakly nonlinear laser wakefield acceleration
  K. Huang, H. Kotaki, M. Mori, T. Esirkepov, J. K. Koga, Y. Hayashi, N. Nakanii, S. V. Bulanov, and M. Kando, Phys. Rev. Accel. Beams 22, 121301 (2019). https://doi.org/10.1103/PhysRevAccelBeams.22.121301
   
• Multiple colliding laser pulses as a basis for studying high-field high-energy physics
  J. Magnusson, A. Gonoskov, M. Marklund, T. Zh. Esirkepov, J. K. Koga, K. Kondo, M. Kando, S. V. Bulanov, G. Korn, C. G. R. Geddes, C. B. Schroeder, E. Esarey, and S. S. Bulanov, Phys. Rev. A 100, 063404 (2019). https://doi.org/10.1103/PhysRevA.100.063404
   
• The Utility of Applying Various Image Preprocessing Strategies to Reduce the Ambiguity in Deep Learning-based Clinical Image Diagnosis
  Yasuhiko Tachibana, Takayuki Obata, Jeff Kershaw, Hironao Sakaki, Takuya Urushihata, Tokuhiko Omatsu, Riwa Kishimoto, Tatsuya Higashi, Magnetic Resonance in Medical Sciences (2019). https://doi.org/10.2463/mrms.mp.2019-0021
   
• Probing and possible application of the QED vacuum with micro-bubble implosions induced by ultra-intense laser pulses
  James K. Koga, Masakatsu Murakami, Alexey V. Arefiev, Yoshihide Nakamiya, ", Matter and Radiation at Extremes, 4 (3), 034401 (2019).  https://aip.scitation.org/doi/10.1063/1.5086933
   
• Relativistic proton emission from ultrahigh-energy-density nanosphere generated by microbubble implosion
  M. Murakami, A. V. Arefiev, M. A. Zosa, J. K. Koga, Y. Nakamiya, Physics of Plasmas 26, 043112 (2019). https://doi.org/10.1063/1.5093043

   2018年

• High-contrast high-intensity repetitive petawatt laser
  Hiromitsu Kiriyama, Alexander S. Pirozhkov, Mamiko Nishiuchi, Yuji Fukuda, Koichi Ogura, Akito Sagisaka, Yasuhiro Miyasaka, Michiaki Mori, Hironao Sakaki, Nicholas P. Dover, Kotaro Kondo, James K. Koga, Timur Zh. Esirkepov, Masaki Kando, and Kiminori Kondo, Optics Letters 43 (11), pp. 2595-2598 (2018). https://doi.org/10.1364/OL.43.002595
   
• Relativistically upshifted higher harmonic generation via relativistic flying mirrors
  James. K Koga, Sergei V. Bulanov, Timur Zh. Esirkepov, Masaki Kando, Stepan S. Bulanov and Alexander S. Pirozhkov,  Plasma Physics and Controlled Fusion 60 (7), 074007 (2018). https://doi.org/10.1088/1361-6587/aac068
  Corrigendum: Relativistically upshifted higher harmonic generation via relativistic flying mirrors (2018 Plasma Phys. Control. Fusion 60 074007)
  https://doi.org/10.1088/1361-6587/aad012
   
• Coherent, Short-Pulse X-ray Generation via Relativistic Flying Mirrors
  Masaki Kando, Timur Zh. Esirkepov, James K. Koga, Alexander S. Pirozhkov and Sergei V. Bulanov, Quantum Beam Science 2 (2), 9 (2018) [Review]; https://doi.org/10.3390/qubs2020009
   
• On annihilation of the relativistic electron vortex pair in collisionless plasmas
  K. V. Lezhnin, F. F. Kamenets, T. Zh. Esirkepov and S. V. Bulanov, Journal of Plasma Physics 84 (6), 905840610 (2018); https://doi.org/10.1017/S0022377818001162

   2017年

1. Possible Precise Measurement of Delbrück Scattering Using Polarized Photon Beams
   James K. Koga and Takehito Hayakawa, Phys. Rev. Lett. 118, 204801 (2017). https://doi.org/10.1103/PhysRevLett.118.204801
    
2. High resolution X-ray spectra of stainless steel foils irradiated by femtosecond laser pulses with ultra-relativistic intensities
   M. A. Alkhimova, A. Ya. Faenov, I. Yu. Skobelev, T. A. Pikuz, M. Nishiuchi, H. Sakaki, A. S. Pirozhkov, A. Sagisaka, N. P. Dover, Ko. Kondo, K. Ogura, Y. Fukuda, H. Kiriyama, K. Nishitani, T. Miyahara, Y. Watanabe, S. A. Pikuz, M. Kando, R. Kodama, and K. Kondo, Optics Express 25 (23), pp. 29501-29511 (2017); https://doi.org/10.1364/OE.25.029501

Collaborations

• The Institute of Scientific and Industrial Research, Osaka University, Japan
• Institute of Laser Engineering, Osaka University, Japan
• Helmholtz Zentrum Dresden Rossendorf (HZDR), Germany
• ELI Beamlines, Czech Republic
• ELI Nuclear Physics, Romania