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

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

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    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.

    Original languageEnglish
    Title of host publicationUltrafast Phenomena and Nanophotonics XIX
    PublisherSPIE
    Volume9361
    ISBN (Print)9781628414516
    DOIs
    Publication statusPublished - 2015
    EventUltrafast Phenomena and Nanophotonics XIX - San Francisco, United States
    Duration: 2015 Feb 82015 Feb 11

    Other

    OtherUltrafast Phenomena and Nanophotonics XIX
    CountryUnited States
    CitySan Francisco
    Period15/2/815/2/11

    Fingerprint

    Quantum Well
    Gallium Arsenide
    Excitons
    Semiconductor quantum wells
    Excitation
    quantum wells
    Exciton
    excitons
    excitation
    Ionization
    electric pulses
    Time delay
    Modulation
    Pumps
    Spectroscopy
    Delay Time
    time lag
    pumps
    Nonlinear Dynamics
    Pump

    Keywords

    • Exciton
    • Nonlinear optics
    • Quantum well
    • THz spectroscopy
    • Ultrafast phenomena

    ASJC Scopus subject areas

    • Applied Mathematics
    • Computer Science Applications
    • Electrical and Electronic Engineering
    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

    Cite this

    Uchida, K., Hirori, H., Aoki, T., Wolpert, C., Tanaka, K., Mochizuki, T., ... West, K. W. (2015). Time-resolved observation of excitonic dynamics under coherent terahertz excitation in GaAs quantum wells. In Ultrafast Phenomena and Nanophotonics XIX (Vol. 9361). [93611L] SPIE. https://doi.org/10.1117/12.2078419

    Time-resolved observation of excitonic dynamics under coherent terahertz excitation in GaAs quantum wells. / Uchida, K.; Hirori, H.; Aoki, Takao; Wolpert, C.; Tanaka, K.; Mochizuki, T.; Kim, C.; Yoshita, M.; Akiyama, H.; Pfeiffer, L. N.; West, K. W.

    Ultrafast Phenomena and Nanophotonics XIX. Vol. 9361 SPIE, 2015. 93611L.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Uchida, K, Hirori, H, Aoki, T, Wolpert, C, Tanaka, K, Mochizuki, T, Kim, C, Yoshita, M, Akiyama, H, Pfeiffer, LN & West, KW 2015, Time-resolved observation of excitonic dynamics under coherent terahertz excitation in GaAs quantum wells. in Ultrafast Phenomena and Nanophotonics XIX. vol. 9361, 93611L, SPIE, Ultrafast Phenomena and Nanophotonics XIX, San Francisco, United States, 15/2/8. https://doi.org/10.1117/12.2078419
    Uchida K, Hirori H, Aoki T, Wolpert C, Tanaka K, Mochizuki T et al. Time-resolved observation of excitonic dynamics under coherent terahertz excitation in GaAs quantum wells. In Ultrafast Phenomena and Nanophotonics XIX. Vol. 9361. SPIE. 2015. 93611L https://doi.org/10.1117/12.2078419
    Uchida, K. ; Hirori, H. ; Aoki, Takao ; Wolpert, C. ; Tanaka, K. ; Mochizuki, T. ; Kim, C. ; Yoshita, M. ; Akiyama, H. ; Pfeiffer, L. N. ; West, K. W. / Time-resolved observation of excitonic dynamics under coherent terahertz excitation in GaAs quantum wells. Ultrafast Phenomena and Nanophotonics XIX. Vol. 9361 SPIE, 2015.
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    AU - Hirori, H.

    AU - Aoki, Takao

    AU - Wolpert, C.

    AU - Tanaka, K.

    AU - Mochizuki, T.

    AU - Kim, C.

    AU - Yoshita, M.

    AU - Akiyama, H.

    AU - Pfeiffer, L. N.

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