Abstract
Picosecond pump probe measurements on waveguides containing a single GaAs/GaAlAs quantum well have enabled us to determine for the first time both electron and hole escape times from biased quantum wells. Contributions from excitonic saturation and field screening by photogenerated carriers can be clearly identified in the nonlinear transition signal and are quantitatively modeled. Preliminary analysis suggests that thermally assisted escape is dominant at room temperature, but discrepancies are found with conventional thermionic emission models.
| Original language | English |
|---|---|
| Pages (from-to) | 426-428 |
| Number of pages | 3 |
| Journal | Applied Physics Letters |
| Volume | 61 |
| Issue number | 4 |
| Publication status | Published - 27 Jul 1992 |
Cite this
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SIMULTANEOUS MEASUREMENT OF ELECTRON AND HOLE ESCAPE TIMES FROM BIASED SINGLE QUANTUM-WELLS. / CAVAILLES, J A ; MILLER, D A B ; CUNNINGHAM, J E ; WA, P L K ; MILLER, A .
In: Applied Physics Letters, Vol. 61, No. 4, 27.07.1992, p. 426-428.Research output: Contribution to journal › Article
TY - JOUR
T1 - SIMULTANEOUS MEASUREMENT OF ELECTRON AND HOLE ESCAPE TIMES FROM BIASED SINGLE QUANTUM-WELLS
AU - CAVAILLES, J A
AU - MILLER, D A B
AU - CUNNINGHAM, J E
AU - WA, P L K
AU - MILLER, A
PY - 1992/7/27
Y1 - 1992/7/27
N2 - Picosecond pump probe measurements on waveguides containing a single GaAs/GaAlAs quantum well have enabled us to determine for the first time both electron and hole escape times from biased quantum wells. Contributions from excitonic saturation and field screening by photogenerated carriers can be clearly identified in the nonlinear transition signal and are quantitatively modeled. Preliminary analysis suggests that thermally assisted escape is dominant at room temperature, but discrepancies are found with conventional thermionic emission models.
AB - Picosecond pump probe measurements on waveguides containing a single GaAs/GaAlAs quantum well have enabled us to determine for the first time both electron and hole escape times from biased quantum wells. Contributions from excitonic saturation and field screening by photogenerated carriers can be clearly identified in the nonlinear transition signal and are quantitatively modeled. Preliminary analysis suggests that thermally assisted escape is dominant at room temperature, but discrepancies are found with conventional thermionic emission models.
M3 - Article
VL - 61
SP - 426
EP - 428
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 4
ER -