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 |
| Publisher | SPIE |
| Volume | 9361 |
| ISBN (Print) | 9781628414516 |
| DOIs | |
| Publication status | Published - 2015 |
| Event | Ultrafast Phenomena and Nanophotonics XIX - San Francisco, United States Duration: 2015 Feb 8 → 2015 Feb 11 |
Other
| Other | Ultrafast Phenomena and Nanophotonics XIX |
|---|---|
| Country | United States |
| City | San Francisco |
| Period | 15/2/8 → 15/2/11 |
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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
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 proceeding › Conference contribution
}
TY - GEN
T1 - Time-resolved observation of excitonic dynamics under coherent terahertz excitation in GaAs quantum wells
AU - Uchida, K.
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.
AU - West, K. W.
PY - 2015
Y1 - 2015
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
UR - http://www.scopus.com/inward/record.url?scp=84931864471&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84931864471&partnerID=8YFLogxK
U2 - 10.1117/12.2078419
DO - 10.1117/12.2078419
M3 - Conference contribution
SN - 9781628414516
VL - 9361
BT - Ultrafast Phenomena and Nanophotonics XIX
PB - SPIE
ER -