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Anomalous enhancement of terahertz radiation from semi-insulating GaAs surfaces induced by optical pump
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| Zeitschriftentitel: | Applied Physics Letters |
|---|---|
| Personen und Körperschaften: | , , , , , |
| In: | Applied Physics Letters, 89, 2006, 8 |
| Medientyp: | E-Article |
| Sprache: | Englisch |
| veröffentlicht: |
AIP Publishing
|
| Schlagwörter: |
| author_facet |
Shi, Yulei Xu, Xinlong Yang, Yuping Yan, Wei Ma, Shihua Wang, Li Shi, Yulei Xu, Xinlong Yang, Yuping Yan, Wei Ma, Shihua Wang, Li |
|---|---|
| author |
Shi, Yulei Xu, Xinlong Yang, Yuping Yan, Wei Ma, Shihua Wang, Li |
| spellingShingle |
Shi, Yulei Xu, Xinlong Yang, Yuping Yan, Wei Ma, Shihua Wang, Li Applied Physics Letters Anomalous enhancement of terahertz radiation from semi-insulating GaAs surfaces induced by optical pump Physics and Astronomy (miscellaneous) |
| author_sort |
shi, yulei |
| spelling |
Shi, Yulei Xu, Xinlong Yang, Yuping Yan, Wei Ma, Shihua Wang, Li 0003-6951 1077-3118 AIP Publishing Physics and Astronomy (miscellaneous) http://dx.doi.org/10.1063/1.2338805 <jats:p>Femtosecond pump-generation studies of terahertz emission from semi-insulating GaAs surfaces have been investigated in detail. By changing the time delay between the pump and the generation pulses, we can follow the time evolution of the carrier transport with picosecond resolution. Abnormal increase in the amplitude of terahertz radiation subsequent to the excitation of pump pulse is observed, and it arises primarily from carrier capture in the trapping states with a time constant of about 20ps. Furthermore, the corresponding amplitude spectrum, pump power-dependent measurements, and temperature-dependent measurements are also discussed.</jats:p> Anomalous enhancement of terahertz radiation from semi-insulating GaAs surfaces induced by optical pump Applied Physics Letters |
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Applied Physics Letters |
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| title |
Anomalous enhancement of terahertz radiation from semi-insulating GaAs surfaces induced by optical pump |
| title_unstemmed |
Anomalous enhancement of terahertz radiation from semi-insulating GaAs surfaces induced by optical pump |
| title_full |
Anomalous enhancement of terahertz radiation from semi-insulating GaAs surfaces induced by optical pump |
| title_fullStr |
Anomalous enhancement of terahertz radiation from semi-insulating GaAs surfaces induced by optical pump |
| title_full_unstemmed |
Anomalous enhancement of terahertz radiation from semi-insulating GaAs surfaces induced by optical pump |
| title_short |
Anomalous enhancement of terahertz radiation from semi-insulating GaAs surfaces induced by optical pump |
| title_sort |
anomalous enhancement of terahertz radiation from semi-insulating gaas surfaces induced by optical pump |
| topic |
Physics and Astronomy (miscellaneous) |
| url |
http://dx.doi.org/10.1063/1.2338805 |
| publishDate |
2006 |
| physical |
|
| description |
<jats:p>Femtosecond pump-generation studies of terahertz emission from semi-insulating GaAs surfaces have been investigated in detail. By changing the time delay between the pump and the generation pulses, we can follow the time evolution of the carrier transport with picosecond resolution. Abnormal increase in the amplitude of terahertz radiation subsequent to the excitation of pump pulse is observed, and it arises primarily from carrier capture in the trapping states with a time constant of about 20ps. Furthermore, the corresponding amplitude spectrum, pump power-dependent measurements, and temperature-dependent measurements are also discussed.</jats:p> |
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| author | Shi, Yulei, Xu, Xinlong, Yang, Yuping, Yan, Wei, Ma, Shihua, Wang, Li |
| author_facet | Shi, Yulei, Xu, Xinlong, Yang, Yuping, Yan, Wei, Ma, Shihua, Wang, Li, Shi, Yulei, Xu, Xinlong, Yang, Yuping, Yan, Wei, Ma, Shihua, Wang, Li |
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| description | <jats:p>Femtosecond pump-generation studies of terahertz emission from semi-insulating GaAs surfaces have been investigated in detail. By changing the time delay between the pump and the generation pulses, we can follow the time evolution of the carrier transport with picosecond resolution. Abnormal increase in the amplitude of terahertz radiation subsequent to the excitation of pump pulse is observed, and it arises primarily from carrier capture in the trapping states with a time constant of about 20ps. Furthermore, the corresponding amplitude spectrum, pump power-dependent measurements, and temperature-dependent measurements are also discussed.</jats:p> |
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| institution | DE-Gla1, DE-Zi4, DE-15, DE-Pl11, DE-Rs1, DE-105, DE-14, DE-Ch1, DE-L229, DE-D275, DE-Bn3, DE-Brt1, DE-D161 |
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| spelling | Shi, Yulei Xu, Xinlong Yang, Yuping Yan, Wei Ma, Shihua Wang, Li 0003-6951 1077-3118 AIP Publishing Physics and Astronomy (miscellaneous) http://dx.doi.org/10.1063/1.2338805 <jats:p>Femtosecond pump-generation studies of terahertz emission from semi-insulating GaAs surfaces have been investigated in detail. By changing the time delay between the pump and the generation pulses, we can follow the time evolution of the carrier transport with picosecond resolution. Abnormal increase in the amplitude of terahertz radiation subsequent to the excitation of pump pulse is observed, and it arises primarily from carrier capture in the trapping states with a time constant of about 20ps. Furthermore, the corresponding amplitude spectrum, pump power-dependent measurements, and temperature-dependent measurements are also discussed.</jats:p> Anomalous enhancement of terahertz radiation from semi-insulating GaAs surfaces induced by optical pump Applied Physics Letters |
| spellingShingle | Shi, Yulei, Xu, Xinlong, Yang, Yuping, Yan, Wei, Ma, Shihua, Wang, Li, Applied Physics Letters, Anomalous enhancement of terahertz radiation from semi-insulating GaAs surfaces induced by optical pump, Physics and Astronomy (miscellaneous) |
| title | Anomalous enhancement of terahertz radiation from semi-insulating GaAs surfaces induced by optical pump |
| title_full | Anomalous enhancement of terahertz radiation from semi-insulating GaAs surfaces induced by optical pump |
| title_fullStr | Anomalous enhancement of terahertz radiation from semi-insulating GaAs surfaces induced by optical pump |
| title_full_unstemmed | Anomalous enhancement of terahertz radiation from semi-insulating GaAs surfaces induced by optical pump |
| title_short | Anomalous enhancement of terahertz radiation from semi-insulating GaAs surfaces induced by optical pump |
| title_sort | anomalous enhancement of terahertz radiation from semi-insulating gaas surfaces induced by optical pump |
| title_unstemmed | Anomalous enhancement of terahertz radiation from semi-insulating GaAs surfaces induced by optical pump |
| topic | Physics and Astronomy (miscellaneous) |
| url | http://dx.doi.org/10.1063/1.2338805 |