Dai Yoshitomi's Homepage

論文

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Optics Expressの論文は、PDF版が無料で閲覧できます(2022年5月現在)。

  1. Mitsuya Takeuchi, Dai Yoshitomi, Ge Shuai, Kohei Kato, Hiroaki Furuse, Shinki Nakamura, Hiroyasu Sone, "Normal Dispersion Passively Mode-Locked, High-Concentration Ytterbium-Doped Bismuth-Based Fiber Laser," IEEJ Transactions on Electronics, Information and Systems Vol. 141 No. 12,pp. 1500-1502、(2021).
    doi: 10.1541/ieejeiss.141.1500
  2. Tatsunori Shibuya, Dai Yoshitomi, Daisuke Satoh, Kazuyuki Sakaue, Masahito Tanaka, Hideyuki Takada, Hiroshi Ogawa, Kenji Torizuka, Yohei Kobayashi, Ryunosuke Kuroda, "Ablation thresholds and morphological changes of poly-L-lacticacid for pulse durations in the femtosecond-to-picosecond regime," SURFACE AND INTERFACE ANALYSIS,-ECASIA SPECIAL ISSUE PAPER,pp. 1-5, (2020).
    doi: 10.1002/sia.6824
  3. Aiko Narazaki, Hideyuki Takada, Dai Yoshitomi, Kenji Torizuka, and Yohei Kobayashi, "Ultrafast Laser Processing of Ceramics: Comprehensive Survey of Laser Parameters," Journal of Laser Applications, Vol. 33, 012009 (2020).
    doi: 10.2351/7.0000310
  4. Aiko Narazaki, Hideyuki Takada, Dai Yoshitomi, Kenji Torizuka, and Yohei Kobayashi, "Study on nonthermal–thermal processing boundary in drilling of ceramics using ultrashort pulse laser system with variable parameters over a wide range," Applied Physics A, Vol. 126, 252 (2020).
    doi: 10.1007/s00339-020-3410-2
  5. Hideyuki Takada, Yuhei Chiba, Dai Yoshitomi, Kenji Torizuka, and Kazuhiko Misawa, "41-fs, 35-nJ, Green Pulse Generation from a Yb-doped Fiber Laser System," Optics Express Vol. 25, Issue 3,pp. 2115-2120 (2017).
    doi: 10.1364/OE.25.002115
  6. Dai Yoshitomi, and Kenji Torizuka, "Long-term stable passive synchronization between two-color mode-locked lasers with the aid of temperature stabilization," Optics Express Vol. 22, Issue 4, pp. 4091-4097 (2014).
    doi: 10.1364/OE.22.004091
  7. 曽根 宏靖、原田 康浩、中村 真毅、吉富 大、高田 英行、笠原 亮、鳥塚 健二 「低分散フォトニック結晶ファイバを用いた超広帯域光発生の諸特性」 電気学会論文誌C(電子・情報・システム部門誌)Vol. 132, No. 11, pp.1873-1879 (2012).
    doi: 10.1541/ieejeiss.132.1873
  8. Hiroyasu Sone, Dai Yoshitomi, Xiangyu Zhou, Yasuhiro Harada, Shinki Nakamura, Fatemeh Abrishamian, Ryo Kasahara, Kosuke Kikuchi, Kenji Torizuka, “Spectra and phases of supercontinuum pulses generated in tapered fiber and photonic-crystal-fiber with low dispersion,” The Review of Laser Engineering, Vol.39, No.11, pp.862-865 (2011).
  9. Dai Yoshitomi, Xiangyu Zhou, Yohei Kobayashi, Hideyuki Takada, and Kenji Torizuka, "Long-term stable passive synchronization of 50 μJ femtosecond Yb-doped fiber chirped-pulse amplifier with a mode-locked Ti:sapphire laser," Optics Express Vol. 18, Issue 25, pp. 26027-26036 (2010).
    doi: 10.1364/OE.18.026027
  10. Xiangyu Zhou, Dai Yoshitomi, Yohei Kobayashi, and Kenji Torizuka, "1 W average-power 100 MHz repetition-rate 259 nm femtosecond deep ultraviolet pulse generation from ytterbium fiber amplifier," Optics Letters Vol. 35, Issue 10, pp. 1713-1715 (2010).
    doi: 10.1364/OL.35.001713
  11. Shunsuke Adachi, Nobuhisa Ishii, Teruto Kanai, Atsushi Kosuge, Jiro Itatani, Yohei Kobayashi, Dai Yoshitomi, Kenji Torizuka, and Shuntaro Watanabe, "5-fs, multi-mJ, CEP-locked parametric chirped-pulse amplifier pumped by a 450-nm source at 1 kHz," Optics Express Vol. 16, Issue 19, pp. 14341-14352 (2008).
    doi: 10.1364/OE.16.014341
  12. Xiangyu Zhou, Dai Yoshitomi, Yohei Kobayashi, and Kenji Torizuka, "Generation of 28-fs pulses from a mode-locked ytterbium fiber oscillator," Optics Express Vol. 16, Issue 10, pp. 7055-7059 (2008).
    doi: 10.1364/OE.16.007055
  13. Dai Yoshitomi, Yohei Kobayashi, and Kenji Torizuka, "Characterization of Fourier-synthesized optical waveforms from optically phase-locked femtosecond multicolor pulses," Optics Letters Vol. 33, Issue 24, pp. 2925-2927 (2008).
    doi: 10.1364/OL.33.002925
  14. Yohei Kobayashi, Dai Yoshitomi, Kakuya Iwata, Hideyuki Takada, and Kenji Torizuka, "Ultrashort pulse characterization by ultra-thin ZnO, GaN, and AlN crystals," Optics Express Vol. 15, Issue 15, pp. 9748-9754 (2007).
    doi: 10.1364/OE.15.009748
  15. Dai Yoshitomi, Yohei Kobayashi, Masayuki Kakehata, Hideyuki Takada, and Kenji Torizuka, "100-attosecond synchronization of two-color mode-locked lasers by use of optical phase locking," Springer Series in Optical Sciences Vol. 132 Ultrafast Optics V (Shuntaro Watanabe and Katsui Midorikawa eds.) pp. 389-396 (2006).
  16. Dai Yoshitomi, Yohei Kobayashi, Masayuki Kakehata, Hideyuki Takada, and Kenji Torizuka, "Synchronization of Ti:sapphire and Cr:forsterite mode-locked lasers with 100-attosecond precision by optical-phase stabilization," Optics Express Vol. 14, Issue 13, pp. 6359-6365 (2006).
    doi: 10.1364/OE.14.006359
  17. Dai Yoshitomi, Yohei Kobayashi, Masayuki Kakehata, Hideyuki Takada, Kenji Torizuka, Taketo Onuma, Hideki Yokoi, Takuro Sekiguchi, and Shinki Nakamura, "Ultralow-jitter passive timing stabilization of a mode-locked Er-doped fiber laser by injection of an optical pulse train," Optics Letters Vol. 31, Issue 22, pp. 3243-3245 (2006).
    doi: 10.1364/OL.31.003243
  18. Yohei Kobayashi, Dai Yoshitomi, Masayuki Kakehata, Hideyuki Takada, and Kenji Torizuka, "Long-term optical phase locking between femtosecond Ti:sapphire and Cr:forsterite lasers," Optics Letters Vol. 30, Issue 18, pp. 2496-2498 (2005).
    doi: 10.1364/OL.30.002496
  19. Dai Yoshitomi, Yohei Kobayashi, Hideyuki Takada, Masayuki Kakehata, and Kenji Torizuka, "100-attosecond timing jitter between two-color mode-locked lasers by active-passive hybrid synchronization," Optics Letters Vol. 30, Issue 11, pp. 1408-1410 (2005).
    doi: 10.1364/OL.30.001408

以下の論文は、産総研入所以前(東大物性研)の成果です。

  1. Xiangyu Zhou, Teruto Kanai, Dai Yoshitomi, Taro Sekikawa, and Shuntaro Watanabe, "Generation of high average power, 7.5-fs blue pulses at 5 kHz by adaptive phase control," Applied Physics B: Lasers and Optics Vol. 81, pp. 13-17 (2005).
    doi: 10.1007/s00340-005-1878-2
  2. Dai Yoshitomi, John Nees, Naoki Miyamoto, Taro Sekikawa, Teruto Kanai, Gerald Mourou, and Shuntaro Watanabe, "Phase-matched enhancements of high-harmonic soft X-rays by adaptive wave-front control with a genetic algorithm," Applied Physics B: Lasers and Optics Vol. 78, Issue 3-4, pp. 275-280 (2004).
    doi: 10.1007/s00340-003-1400-7
  3. Naoki Miyamoto, Masato Kamei, Dai Yoshitomi, Teruto Kanai, Taro Sekikawa, Takashi Nakajima, and Shuntaro Watanabe, "Observation of Two-Photon Above-Threshold Ionization of Rare Gases by xuv Harmonic Photons," Physical Review Letters Vol. 93, Issue 8, pp. 083903 (2004).
    doi: 10.1103/PhysRevLett.93.083903
  4. Dai Yoshitomi, Toshihiko Shimizu, Taro Sekikawa, and Shuntaro Watanabe, "Generation and focusing of submilliwatt-average-power 50-nm pulses by the fifth harmonic of a KrF laser," Optics Letters Vol. 27, Issue 24, pp. 2170-2172 (2002).
    doi: 10.1364/OL.27.002170
  5. Yasuo Nabekawa, Dai Yoshitomi, Taro Sekikawa, and Shuntaro Watanabe, "High-average-power femtosecond KrF excimer laser," IEEE Journal on Selected Topics in Quantum Electronics Vol. 7, Issue 4, pp. 551-558 (2001).
  6. Yasuo Nabekawa, Dai Yoshitomi, Taro Sekikawa, and Shuntaro Watanabe, "50-W average-power, 480-fs KrF excimer laser with gated gain amplification," Optics Letters Vol. 26, Issue 11, pp. 807-809 (2001).
    doi: 10.1364/OL.26.000807
  7. Yasuo Nabekawa, K. Sajiki, Dai Yoshitomi, Kiminori Kondo, and Shuntaro Watanabe, "High-repetition-rate high-average-power 300-fs KrF/Ti:sapphire hybrid laser," Optics Letters Vol. 21, Issue 9, pp. 647-649 (1996).
    doi: 10.1364/OL.21.000647

解説記事

  1. 吉富 大、高田 英行、鳥塚 健二、奈良崎 愛子、小林 洋平 「広域パラメータ自動可変超短パルスレーザー加工による迅速なパラメータ探索」 光アライアンス Vol. 33, No. 6,pp.11-15、(2022).
  2. 奈良崎 愛子、吉富 大、高田 英行、Serien Daniela 「先進レーザープロセス ~難加工材からバイオマテリアルまで~」 オプトロニクス Vol. 41, No. 4,pp.138-143 (2022).
  3. 吉富 大、高田 英行、奈良崎 愛子、鳥塚 健二、小林 洋平 「自動パラメータ可変レーザー加工装置」 TACMIX (2022).
  4. 吉富 大、高田 英行、奈良崎 愛子、鳥塚 健二、小林 洋平 「複合パラメータ自動可変超短パルスレーザー加工システムによる最適加工条件の迅速な探索」 レーザ協会誌 Vol. 45, No. 3,pp.1-6 (2020).
  5. 吉富 大 「アト秒精度光電場波形制御」 応用物理 Vol. 78, No. 2, pp. 141-144 (2009).
    doi: 10.11470/oubutsu.78.2_141

以下は、産総研入所以前(東大物性研)の成果です。

  1. 吉富 大、宮本 直樹、関川 太郎、金井 輝人、渡部 俊太郎 「アダプティブ光学素子を用いた高輝度軟X線発生=遺伝的アルゴリズムで最適波面を探る=」 光アライアンス Vol. 17, No. 1, pp. 30-34 (2006).
  2. 吉富 大、渡部 俊太郎 「アダプティブ光学素子を用いた高次高調波発生の最適化」 オプトロニクス Vol. 23, No. 3, pp. 114-118 (2004).
特許

  1. 吉富 大、鳥塚 健二 「チャープパルス増幅装置」 日本国特許 第6202316号.
  2. 吉富大、小林洋平、鳥塚健二 「クロック伝送装置」 日本国特許 第4478800号.
  3. Dai Yoshitomi, Yohei Kobayashi, Kenji Torizuka, "Clock transfer device," US Patent 7508851.

招待・依頼講演(筆頭のみ)
  1. 吉富 大 「自動パラメータ可変100Wレーザーシステムによる迅速な最適加工条件の探索」 多元技術融合光プロセス研究会第4回研究交流会(2019.12、東京大学物性研究所).
  2. 吉富 大、高田 英行、鳥塚 健二、小林 洋平 「最適加工条件探索のためのパラメータ可変高出力ファイバレーザーシステム」 レーザー学会学術講演会第39 回年次大会シンポジウム「スマートレーザー加工を牽引 する光源・プロセス技術」 (2019.1、東海大学高輪キャンパス).
  3. 吉富 大 「最適加工条件の効率的探索のための自動パラメータ可変レーザー加工システム」 レーザー加工学会講演会(2018.12、産総研臨海副都心センター).
  4. 吉富 大、高田 英行、鳥塚 健二、小林 洋平 「最適加工条件の効率的探索のための自動パラメータ可変高出力フェムト秒ファイバーレーザーシステム」 レーザー学会研究会「ファイバレーザー技術」(2018.11、名古屋大学).
  5. 吉富 大 「多波長パルス光の高精度同期とコヒーレント合成」 光応用工学特別研究会(2017.6、東京大学生産技術研究所).
  6. Dai Yoshitomi, "Synchronization of two-color fiber lasers for pulse synthesis," EMN Optoelectronics Meeting(2017.4, Victoria)
  7. 吉富 大 「多波長光パルスのコヒーレント合成による任意電界波形生成」 電子情報通信学会・超高速光エレクトロニクス研究会(2015.1、東京大柏キャンパス).
  8. Dai Yoshitomi, Yohei Kobayashi, Xiangyu Zhou, and Kenji Torizuka, "Fourier synthesis toward attosecond pulse generation," International workshop on attosecond laser science and technology (2008.3, Beijing).
  9. 吉富 大、大沼 岳人、谷 修一、青木 崇、周 翔宇、小林 洋平、鳥塚 健二 「超短パルスレーザーの精密制御技術」 電気学会光・量子デバイス研究会(2008.3、慶応大日吉キャンパス).
  10. 吉富 大、小林 洋平、鳥塚 健二 「2波長フェムト秒レーザーのタイミングと位相の高精度同期」 電子情報通信学会・超高速光エレクトロニクス研究会(2006.7、東京).
  11. 吉富 大、小林 洋平、鳥塚 健二 「多波長フェムト秒パルスの高精度タイミング同期・位相同期」 レーザー学会(2006.2、大宮ソニックシティ).
    doi: 10.2184/lsj.34.51(予稿)
国際学会発表(筆頭のみ)

  1. Dai Yoshitomi, Hideyuki Takada, Yohei Kobayashi, and Aiko Narazaki, "Effects of Fast Intensity Modulation on the Ultrafast Laser Ablation of Fused Silica," International Conference on Laser Ablation (COLA) (2022.4, Matsue).
  2. Dai Yoshitomi, Hideyuki Takada, Kenji Torizuka, and Yohei Kobayashi, "100-W Average-Power Femtosecond Fiber Laser System with Variable Parameters for Rapid Optimization of Laser Processing," Conference on Lasers and Electro-Optics (CLEO) (2019.5, San Jose).
  3. Dai Yoshitomi and Kenji Torizuka, "Integrated Two-Color Femtosecond Chirped-Pulse Fiber Amplification System at Wavelengths of 1050 and 1550 nm," Conference on Lasers and Electro-Optics (CLEO) (2016.6, San Jose).
  4. Dai Yoshitomi and Kenji Torizuka, "Synchronization of Two-Color Femtosecond Fiber Chirped-Pulse Amplifiers by Use of Dispersive-Wave Generation," Advanced Lasers and Photon Sources (ALPS) (2016.5, Yokohama).
  5. Dai Yoshitomi and Kenji Torizuka, "Passive Synchronization between Two-Color Mode-Locked Lasers with Long-Term Stability and Subfemtosecond Timing Jitter," Conference on Lasers and Electro-Optics (CLEO) (2014.6, San Jose).
  6. Dai Yoshitomi and Kenji Torizuka, "Long-term stable passive synchronization between two-color mode-locked lasers with temperature stabilization," Advanced Lasers and Photon Sources (ALPS) (2014.4, Yokohama).
  7. Dai Yoshitomi and Kenji Torizuka, "Temperature Stabilization of Yb-Doped Fiber Mode-Locked Oscillator for Long-Term Stable Passive Two-Color Synchronization," Conference on Lasers and Electro-Optics Pacific Rim (CLEO-PR) (2013.7, Kyoto).
  8. Dai Yoshitomi, Xiangyu Zhou, Yohei Kobayashi, Hideyuki Takada, and Kenji Torizuka, "Submicrojoule femtosecond multicolor pulse generation by a fiber-laser-pumped OPCPA for optical field synthesis," Advanced Lasers and Photon Sources (ALPS) (2012.4, Yokohama).
  9. Dai Yoshitomi, Xiangyu Zhou, Yohei Kobayashi, Hideyuki Takada, and Kenji Torizuka, "Long-Term Stable Passive Synchronization of 50-μJ, 690-fs, 0.4-MHz Yb-Doped Fiber Amplifier with a Mode-Locked Ti:Sapphire Laser," Conference on Lasers and Electro-Optics (CLEO) (2011.5, Baltimore).
  10. Dai Yoshitomi, Taisuke Kawasaki, Takashi Aoki, Yohei Kobayashi, Norio Nakamura, Tetsuya Homma, Hiroshi Kawada, and Kenji Torizuka, "Normal-Dispersion Passively Mode-Locked Ytterbium-Doped Fiber Laser with a Fundamental Repetition Rate Higher than 400 MHz," Conference on Lasers and Electro-Optics (CLEO) (2009.6, Baltimore).
  11. Dai Yoshitomi, Yohei Kobayashi, and Kenji Torizuka, "Relative-Phase Measurement of Multicolor Pulses for Characterization of Fourier-Synthesized Waveform," Conference on Lasers and Electro-Optics (CLEO) (2008.5, San Jose).
  12. Dai Yoshitomi, Yohei Kobayashi, Masayuki Kakehata, Hideyuki Takada, Kenji Torizuka, Taketo Onuma, Hideki Yokoi, Takuro Sekiguchi, Shinki Nakamura, "Ultralow-Jitter Passive Timing Stabilization of a Mode-Locked Fiber Laser by Injection of Reference Pulses," Conference on Lasers and Electro-Optics (CLEO) (2007.5, Baltimore).
  13. Dai Yoshitomi, Yohei Kobayashi, Masayuki Kakehata, Hideyuki Takada, and Kenji Torizuka, "100-Attosecond Synchronization of Two-Color Mode-Locked Lasers by Optical Phase-Locking," Conference on Lasers and Electro-Optics (CLEO) (2006.5, Long Beach).
  14. Dai Yoshitomi, Yohei Kobayashi, Masayuki Kakehata, Hideyuki Takada, and Kenji Torizuka, "Synchronization of Ti:sapphire and Cr:forsterite mode-locked lasers with a 100-attosecond accuracy," International Seminar on Progress and Excitement in AMO Physics (2006.1, Chofu).
  15. Dai Yoshitomi, Yohei Kobayashi, Masayuki Kakehata, Hideyuki Takada, and Kenji Torizuka, "100-attosecond synchronization of two-color mode-locked lasers by use of optical phase-locking," Joint Conference on Ultrafast Optics V and Applications of High Field and Short Wavelength Sources XI (2005.9, Nara).
  16. Dai Yoshitomi, Yohei Kobayashi, Masayuki Kakehata, Hideyuki Takada, and Kenji Torizuka, "Sub-100-attosecond timing jitter between two-color mode-locked lasers by active / passive hybrid synchronization," Conference on Lasers and Electro-Optics (CLEO) (2005.5, Baltimore).

以下は、産総研入所以前(東大物性研)の成果です。

  1. Dai Yoshitomi, John Nees, Naoki Miyamoto, Teruto Kanai, Taro Sekikawa, Gerald Mourou, and Shuntaro Watanabe, "Enhancement of high-harmonic soft x-rays by adaptive wave-front control with genetic algorithm," Conference on Lasers and Electro-Optics (CLEO) (2003.6, Baltimore).
  2. Dai Yoshitomi, Toshihiko Shimizu, Taro Sekikawa, and Shuntaro Watanabe, "Generation of coherent 50-nm microjoule pulses by the fifth harmonic of a KrF laser," Conference on Lasers and Electro-Optics (CLEO) (2002.5, Long Beach).