Time-resolved observation of excitonic dynamics under coherent terahertz excitation in GaAs quantum wells

K. Uchida, H. Hirori, T. Aoki, C. Wolpert, K. Tanaka, T. Mochizuki, C. Kim, M. Yoshita, H. Akiyama, L. N. Pfeiffer, K. W. West

研究成果: Conference contribution

抄録

By means of THz pump and optical probe spectroscopy, we observed that the incident THz pulse induces a strong spectral modulation of the 1s heavy-hole exciton peak of GaAs quantum wells due to Rabi splitting. Our precise measurements in the time domain show that the Rabi splitting follows the instantaneous THz electric pulse at extremely strong fields but persists up to a negative delay time of ∼1 ps at weak fields. This field dependent dynamics of the Rabi splitting indicates that the excitonic field ionization governs a nonperturbative nonlinear dynamics of excitons by causing a reduction of the dephasing time.

本文言語English
ホスト出版物のタイトルUltrafast Phenomena and Nanophotonics XIX
編集者Markus Betz, Kong-Thon Tsen, Abdulhakem Y. Elezzabi
出版社SPIE
ISBN(電子版)9781628414516
DOI
出版ステータスPublished - 2015
イベントUltrafast Phenomena and Nanophotonics XIX - San Francisco, United States
継続期間: 2015 2月 82015 2月 11

出版物シリーズ

名前Proceedings of SPIE - The International Society for Optical Engineering
9361
ISSN(印刷版)0277-786X
ISSN(電子版)1996-756X

Other

OtherUltrafast Phenomena and Nanophotonics XIX
国/地域United States
CitySan Francisco
Period15/2/815/2/11

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • コンピュータ サイエンスの応用
  • 応用数学
  • 電子工学および電気工学

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