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

doi:10.1117/12.2078419

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

School of Advanced Science and Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 language	English
Title of host publication	Ultrafast Phenomena and Nanophotonics XIX
Editors	Markus Betz, Kong-Thon Tsen, Abdulhakem Y. Elezzabi
Publisher	SPIE
ISBN (Electronic)	9781628414516
DOIs	https://doi.org/10.1117/12.2078419
Publication status	Published - 2015
Event	Ultrafast Phenomena and Nanophotonics XIX - San Francisco, United States Duration: 2015 Feb 8 → 2015 Feb 11

Publication series

Name	Proceedings of SPIE - The International Society for Optical Engineering
Volume	9361
ISSN (Print)	0277-786X
ISSN (Electronic)	1996-756X

Other

Other	Ultrafast Phenomena and Nanophotonics XIX
Country/Territory	United States
City	San Francisco
Period	15/2/8 → 15/2/11

Keywords

Exciton
Nonlinear optics
Quantum well
THz spectroscopy
Ultrafast phenomena

ASJC Scopus subject areas

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

Access to Document

10.1117/12.2078419

Cite this

Uchida, K., Hirori, H., Aoki, T., Wolpert, C., Tanaka, K., Mochizuki, T., Kim, C., Yoshita, M., Akiyama, H., Pfeiffer, L. N., & West, K. W. (2015). Time-resolved observation of excitonic dynamics under coherent terahertz excitation in GaAs quantum wells. In M. Betz, K-T. Tsen, & A. Y. Elezzabi (Eds.), Ultrafast Phenomena and Nanophotonics XIX Article 93611L (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9361). 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, T. et al.
Ultrafast Phenomena and Nanophotonics XIX. ed. / Markus Betz; Kong-Thon Tsen; Abdulhakem Y. Elezzabi. SPIE, 2015. 93611L (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9361).

Research output: Chapter in Book/Report/Conference proceeding › Conference 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 M Betz, K-T Tsen & AY Elezzabi (eds), Ultrafast Phenomena and Nanophotonics XIX., 93611L, Proceedings of SPIE - The International Society for Optical Engineering, vol. 9361, 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 Betz M, Tsen K-T, Elezzabi AY, editors, Ultrafast Phenomena and Nanophotonics XIX. SPIE. 2015. 93611L. (Proceedings of SPIE - The International Society for Optical Engineering). doi: 10.1117/12.2078419

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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.",

keywords = "Exciton, Nonlinear optics, Quantum well, THz spectroscopy, Ultrafast phenomena",

author = "K. Uchida and H. Hirori and T. Aoki and C. Wolpert and K. Tanaka and T. Mochizuki and C. Kim and M. Yoshita and H. Akiyama and Pfeiffer, {L. N.} and West, {K. W.}",

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AU - Uchida, K.

AU - Hirori, H.

AU - Aoki, T.

AU - Wolpert, C.

AU - Tanaka, K.

AU - Mochizuki, T.

AU - Kim, C.

AU - Yoshita, M.

AU - Akiyama, H.

AU - Pfeiffer, L. N.

AU - West, K. W.

PY - 2015

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N2 - 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.

AB - 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.

KW - Exciton

KW - Nonlinear optics

KW - Quantum well

KW - THz spectroscopy

KW - Ultrafast phenomena

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BT - Ultrafast Phenomena and Nanophotonics XIX

A2 - Betz, Markus

A2 - Tsen, Kong-Thon

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PB - SPIE

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Y2 - 8 February 2015 through 11 February 2015

ER -

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

Abstract

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