Prechtel, L. and Manus, S. and Schuh, D. and Wegscheider, W. and Holleitner, A. W. (2010) Spatially resolved ultrafast transport current in GaAs photoswitches. APPLIED PHYSICS LETTERS, 96 (26): 261110. ISSN 0003-6951, 1077-3118
Full text not available from this repository. (Request a copy)Abstract
We apply a pump- and probe-scheme to coplanar stripline circuits to investigate the photocurrent response of GaAs photoswitches in time and space. We find a displacement current pulse, as reported earlier. We interpret a time-delayed second pulse as a transport current. In a time-of-flight analysis we determine the velocity of the photogenerated charge carriers in the transport current. It exceeds the Fermi and the single-particle quantum velocities. This suggests that the excitation of an electron-hole plasma and not single charge-carriers dominates the ultrafast transport current in GaAs photoswitches. (C) 2010 American Institute of Physics. [doi: 10.1063/1.3458819]
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ELECTRICAL PULSE GENERATION; COPLANAR TRANSMISSION-LINES; OPTOELECTRONIC MEASUREMENT; ILLUMINATION; DISPERSION; FIELD; gallium arsenide; III-V semiconductors; photoconducting switches; photoconductivity; photoemission; solid-state plasma; time of flight spectra |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Experimental and Applied Physics > Chair Professor Huber > Group Rupert Huber |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 28 Jul 2020 05:07 |
| Last Modified: | 28 Jul 2020 05:07 |
| URI: | https://pred.uni-regensburg.de/id/eprint/24544 |
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