Publications

• Development of a portable and cost-effective femtosecond fibre laser synchronizable with synchrotron X-ray pulses,
  Keisuke Kaneshima, Takumi Kyoda, Shuta Sugeta, and Yoshihito Tanaka,
  Journal of Synchrotron Radiation 31(4), 821-828 (2024).
  
  
• Experimental demonstration to control the pulse length of coherent undulator radiation by chirped microbunching,
  Takashi Tanaka, Yuichiro Kida, Satoshi Hashimoto, Shuji Miyamoto, Tadashi Togashi, Hiromitsu Tomizawa, Aoi Gocho, Keisuke Kaneshima, and Yoshihito Tanaka,
  Physical Review Letters 131(14), 145001 (2023).
  
  
• Pulse-to-Pulse ultrafast dynamics of highly photoexcited Ge₂Sb₂Te₅ thin films,
  Masataka Kobayashi, Yusuke Arashida, Kanta Asakawa, Keisuke Kaneshima, Masashi Kuwahara, Kuniaki Konishi, Junji Yumoto, Makoto Kuwata-Gonokami, Jun Takeda, and Ikufumi Katayama,
  Japanese Journal of Applied Physics 62(2), 022001 (2023).
  
  
• Dispersion measurement of an objective lens for ultrafast microscopy,
  Keisuke Kaneshima, Takumi Minami, Takumi Kyoda, Yoshihito Tanaka,
  Optics Continuum 1(9), 1939-1945 (2022).
  
  
• High harmonic generation from GaSe in a deep-UV range well above the bandgap,
  Kotaro Imasaka, Yasushi Shinohara, Tomohiro Kaji, Keisuke Kaneshima, Nobuhisa Ishii, Jiro Itatani, Kenichi L. Ishikawa, Satoshi Ashihara,
  Optics Continuum 1(5), 1232-1247 (2022).
  
  
• Dynamic interference of the high harmonics from photoisomerizing 1,3-cyclohexadiene,
  Keisuke Kaneshima, Yuki Ninota, Taro Sekikawa,
  Journal of the Optical Society of America B 38(2), 441-447 (2021).
  
  
• Nanoscale phase change on Ge₂Sb₂Te₅ thin films induced by optical near fields with photoassisted scanning tunneling microscope,
  Kanta Asakawa, Dang-il Kim, Shotaro Yaguchi, Mikito Tsujii, Katsumasa Yoshioka, Keisuke Kaneshima, Yusuke Arashida, Shoji Yoshida, Hidemi Shigekawa, Masashi Kuwahara, Ikufumi Katayama, Jun Takeda,
  Applied Physics Letters 117(21), 211102-211102 (2020).
  
  
• 中赤外光パルスを用いた固体高次高調波発生とその偏光特性,
  石井順久, 金島圭佑, 夏沛宇, 斎藤成之, 金井輝人, 板谷治郎,
  レーザー研究 48(4), 168-173 (2020).
  
  
• Polarimetry of a single-order circularly polarized high harmonic separated by a time-delay compensated monochromator,
  Kengo Ito, Eisuke Haraguchi, Keisuke Kaneshima, Taro Sekikawa,
  Optics Express 27(26), 38735-38743 (2019).
  
  
• Resonant-like field enhancement by nanoscale grating-coupled propagating surface plasmons and localized surface plasmons in the mid-infrared range: Implications for ultrafast plasmonic electron sources,
  Tomoya Mizuno, Kengo Takeuchi, Keisuke Kaneshima, Nobuhisa Ishii, Teruto Kanai, Jiro Itatani,
  ACS Applied Nano Materials 2(11), 7067-7073 (2019).
  
  
• 位相安定な中赤外光源とサブサイクル分光,
  金島圭佑, 石井順久, 竹内健悟, 板谷治郎,
  固体物理 54(11), 705-712 (2019).
  
  
• 真空紫外高調波発生と超高速光電子分光・高次高調波分光への応用
  金島圭佑, 関川太郎,
  光学 48(9), 367-373 (2019).
  
  
• Ultrafast control of ferroelectricity with dynamical repositioning of protons in a supramolecular cocrystal studied by femtosecond nonlinear spectroscopy,
  Tsugumi Umanodan, Keisuke Kaneshima, Kengo Takeuchi, Nobuhisa Ishii, Jiro Itatani, Hideki Hirori, Yasuyuki Sanari, Koichiro Tanaka, Yoshihiko Kanemitsu, Tadahiko Ishikawa, Shin-ya Koshihara, Sachio Horiuchi, Yoichi Okimoto,
  Journal of the Physical Society of Japan 88(1), 013705 (2019).
  
  
• Time-resolved high-harmonic spectroscopy of ultrafast photoisomerization dynamics,
  Keisuke Kaneshima, Yuki Ninota, Taro Sekikawa,
  Optics Express 26(23) 31039-31054 (2018).
  
  
• Circular dichroism in high-order harmonic generation from chiral molecules,
  Yoichi Harada, Eisuke Haraguchi, Keisuke Kaneshima, Taro Sekikawa,
  Physical Review A 98(2), 021401(R) (2018).
  
  
• Polarization-resolved study of high harmonics from bulk semiconductors,
  Keisuke Kaneshima, Yasushi Shinohara, Kengo Takeuchi, Nobuhisa Ishii, Kotaro Imasaka, Tomohiro Kaji, Satoshi Ashihara, Kenichi L. Ishikawa, Jiro Itatani,
  Physical Review Letters 120(24), 243903 (2018).
  
  
• Generation of sub-two-cycle millijoule infrared pulses in an optical parametric chirped-pulse amplifier and their application to soft x-ray absorption spectroscopy with high-flux high harmonics,
  Nobuhisa Ishii, Keisuke Kaneshima, Teruto Kanai, Shuntaro Watanabe, Jiro Itatani,
  Journal of Optics 20(1), 014003 (2018).
  
  
• 高強度中赤外光源によって拓かれる固体強光子場科学,
  金島圭佑, 水野智也, 石井順久, 板谷治郎,
  応用物理 86(10), 892-896 (2017).
  
  
• Carrier-envelope phase mapping in laser-induced electron diffraction,
  Henning Geiseler, Nobuhisa Ishii, Keisuke Kaneshima, Florian Geier, Teruto Kanai, Oleg I. Tolstikhin, Toru Morishita, Jiro Itatani,
  Physical Review A 94(3) 033417 (2016).
  
  
• Generation of spectrally stable 6.5-fs visible pulses via filamentation in krypton,
  Keisuke Kaneshima, Kengo Takeuchi, Nobuhisa Ishii, Jiro Itatani,
  High Power Laser Science and Engineering 4 e17 (2016).
  
  
• Generation of carrier-envelope phase-stable mid-infrared pulses via dual-wavelength optical parametric amplification,
  Keisuke Kaneshima, Nobuhisa Ishii, Kengo Takeuchi, Jiro Itatani,
  Optics Express 24(8), 8660-8665 (2016).
  
  
• Generation of ultrashort intense optical pulses at 1.6 μm from a bismuth triborate-based optical parametric chirped pulse amplifier with carrier-envelope phase stabilization,
  Nobuhisa Ishii, Keisuke Kaneshima, Teruto Kanai, Shuntaro Watanabe, Jiro Itatani,
  Journal of Optics 17(9), 094001 (2015).
  
  
• Ultrabroadband infrared chirped mirrors characterized by a white-light Michelson interferometer
  Keisuke Kaneshima, Muneo Sugiura, Koichi Tamura, Nobuhisa Ishii, Jiro Itatani,
  Applied Physics B-Lasers and Optics 119(2), 347-353 (2015).
  
  
• Long-term passive stabilization of the carrier-envelope phase of an intense infrared few-cycle pulse source,
  Henning Geiseler, Nobuhisa Ishii, Keisuke Kaneshima, Teruto Kanai, Jiro Itatani,
  Applied Physics B-Lasers and Optics 117(3), 941-946 (2014).
  
  
• High-energy half-cycle cutoffs in high harmonic and rescattered electron spectra using waveform-controlled few-cycle infrared pulses,
  Henning Geiseler, Nobuhisa Ishii, Keisuke Kaneshima, Kenta Kitano, Teruto Kanai, Jiro Itatani,
  Journal of Physics B-Atomic Molecular and Optical Physics 47(20), 204011 (2014).
  
  
• Carrier-envelope phase-dependent high harmonic generation in the water window using few-cycle infrared pulses,
  Nobuhisa Ishii, Keisuke Kaneshima, Kenta Kitano, Teruto Kanai, Shuntaro Watanabe, Jiro Itatani,
  Nature Communications 5, 3331 (2014).
  
  
• Sub-two-cycle, carrier-envelope phase-stable, intense optical pulses at 1.6 μm from a BiB₃O₆ optical parametric chirped-pulse amplifier,
  Nobuhisa Ishii, Keisuke Kaneshima, Kenta Kitano, Teruto Kanai, Shuntaro Watanabe, Jiro Itatani,
  Optics letters 37(20), 4182-4184 (2012).