J-GLOBAL ID:200901003313782430   Update date: Jun. 09, 2020

Kojima Osamu

コジマ オサム | Kojima Osamu
Affiliation and department:
Job title: Associate Professor
Research field  (2): Electric/electronic material engineering ,  Semiconductors, optical and atomic physics
Research keywords  (2): Ultrafast spectroscopy ,  Semiconductor optics
Papers (70):
  • KOJIMA OSAMU, Nagauchi Junpei, KITA TAKASHI. Exciton dynamics as a function of excitation intensity and double-pulse excitation in cyanine molecule thin films: Toward low-power optical switches. Journal of Applied Physics. 2019. 126. 033103-1-6
  • Shintaro Yamamoto, KOJIMA OSAMU, KITA TAKASHI. Effect of modulation of ultrafast transient carrier dynamics by interface on terahertz signal. Journal of Physics: Conference Series. 2019. 1220. 012013-1-4
  • KOJIMA OSAMU, Ryo Izumi, KITA TAKASHI. Effects of a thin nitrogen-doped layer on terahertz dynamics in GaAs containing InAs quantum dots. OSA Continuum. 2019. 2. 1621-1628
  • A. Majeed, P. Ivanov, B. Stevens, E. Clarke, I. Butler, D. Childs, KOJIMA OSAMU, R. Hogg. Broadband THz absorption spectrometer based on excitonic nonlinear optical effects. Light: Science & Applications. 2019. 8. 29-1-5
  • OSAMU KOJIMA, YUKI TARUI, HIDEKI SHIMAZU, KITA TAKASHI, AVAN MAJEED, PAVIO IVANOV, EDMUND CIARKE, RICHARD HOGG. Wide Frequency Tuning of Continuous Terahertz Wave Generated by Difference Frequency Mixing under Exciton-Excitation Conditions in a GaAs/AlAs Multiple Quantum Well. Physical Review Applied. 2018. A 10. pp. 044035-1-6
MISC (9):
  • KOJIMA Osamu. 高密度量子ドットの光物性. 月刊機能材料. 2011. Vol. 31, pp. 6-12
  • 菅野敦史, 菅野敦史, REDOUANE Katouf, REDOUANE Katouf, 小島磨, 小島磨, 小島磨, 早瀬(伊師)潤子, 早瀬(伊師, 潤子, 土屋昌弘, 土屋昌弘, 井須俊郎, 井須俊郎, 井須俊郎. 多連パルス入射時の弱閉じ込め励起子光力-効果サブピコ秒応答. 応用物理学関係連合講演会講演予稿集. 2008. 55th. 3. 1455
  • 菅野敦史, 菅野敦史, KATOUF Redouane, KATOUF Redouane, 小島磨, 小島磨, 小島磨, 早瀬(伊師)潤子, 早瀬(伊師, 潤子, 土屋昌弘, 土屋昌弘, 井須俊郎, 井須俊郎, 井須俊郎. 弱閉じ込め励起子系における光カー効果のピコ秒応答. 応用物理学会学術講演会講演予稿集. 2007. 68th. 3. 1419
  • Kojima O, Isu T, Ishi-Hayase J, Kanno A, Katouf Redouane, Sasaki M, Tsuchiya M. 23pPSA-91 Orientation decay of weakly confined excitons. Meeting abstracts of the Physical Society of Japan. 2007. 62. 2
  • 菅野敦史, 菅野敦史, 井須俊郎, 井須俊郎, 井須俊郎, 小島磨, 小島磨, 小島磨, 早瀬(伊師)潤子, 早瀬(伊師, 潤子, 佐々木雅英, 土屋昌弘, 土屋昌弘. GaAs薄膜中弱閉じ込め励起子の光学応答. 応用物理学関係連合講演会講演予稿集. 2007. 54th. 3. 1551
Patents (1):
  • テラヘルツ電磁波発生源、テラヘルツ電磁波発生装置
Books (2):
  • Quantum Dot Switches:Towards Nanoscale Power-Efficient All-Optical Signal Processing
    Quantum Dot Devices:Lecture Notes in Nanoscale Science and Technology 2012
  • Dynamics of Excitons Confined in Semiconductor Thin Films (in High-Power and Femtosecond Lasers : Properties, Materials and Applications (Lasers and Electro-optics Research and Technology))
    Nova Science Pub Inc 2009
Lectures and oral presentations  (288):
  • Extension of excitation energy to generate terahertz wave to smaller than GaAs bandgap energy due to growth of InAs quantum dots and nitrogen doped layer
    (Compound Semiconductor Week 2019 2019)
  • GaAs/AlAs多重量子井戸の励起子ダイナミクスと二次の非線形光学効果との関係
    (2019年第66回応用物理学会春季学術講演会 2019)
  • 励起子共鳴下での差周波混合によるテラヘルツ電磁波発生
    (第二回電子材料若手交流会(ISYSE) 2018)
  • GaAs/AlAs多重量子井戸における第二次高調波発生
    (第79回応用物理学会秋季学術講演会 2018)
  • Polarization characteristics of terahertz wave generated by differential frequency mixing under exciton excitation condition in a semiconductor quantum well
    (SPIE Optics+Photonics 2018)
Awards (2):
  • 2008/07 - ICOOPMA組織委員会 Best Poster Award Lengthening of photoluminescence decay time owing to expansion of electron envelope functions in stacked quantum dots
  • 2008/03 - Journal of Physical Society of Japan Editors' Choice 半導体励起子の超高速応答に関する研究
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