Details
| Original language | English |
|---|---|
| Pages (from-to) | 206-209 |
| Number of pages | 4 |
| Journal | Physica Scripta |
| Volume | 1992 |
| Issue number | T45 |
| Publication status | Published - 1992 |
| Externally published | Yes |
Abstract
We have studied wide quantum well structures with various spectroscopic tools. The effects originating from lateral quantization are found to be strongly dependent on the state under investigation and on the excited carrier density. While conventional low-intensity photoluminescence excitation spectroscopy reveals the quantization of the exciton’s center-of-mass motion, two-photon absorption spectroscopy indicates that higher excitonic states are completely quantized by the lateral confinement. The energy positions are found to be in good agreement with one-dimensional (1D) subband calculations. Additionally, transitions between 1D subbands can be found under high excitation conditions. The singularity of the 1D-density of states is reflected by distinct peaks in the time resolved spectra of a dense electron-hole plasma, which is optically excited by high power laser pulses.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
- Mathematics(all)
- Mathematical Physics
- Physics and Astronomy(all)
- Condensed Matter Physics
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In: Physica Scripta, Vol. 1992, No. T45, 1992, p. 206-209.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Linear and nonlinear optical properties of gaas quantum wires
T2 - center-of-mass, excitonic and electron-hole plasma quantization
AU - Lage, H.
AU - Heitmann, D.
AU - Oestreich, Michael
AU - Cingolani, R.
PY - 1992
Y1 - 1992
N2 - We have studied wide quantum well structures with various spectroscopic tools. The effects originating from lateral quantization are found to be strongly dependent on the state under investigation and on the excited carrier density. While conventional low-intensity photoluminescence excitation spectroscopy reveals the quantization of the exciton’s center-of-mass motion, two-photon absorption spectroscopy indicates that higher excitonic states are completely quantized by the lateral confinement. The energy positions are found to be in good agreement with one-dimensional (1D) subband calculations. Additionally, transitions between 1D subbands can be found under high excitation conditions. The singularity of the 1D-density of states is reflected by distinct peaks in the time resolved spectra of a dense electron-hole plasma, which is optically excited by high power laser pulses.
AB - We have studied wide quantum well structures with various spectroscopic tools. The effects originating from lateral quantization are found to be strongly dependent on the state under investigation and on the excited carrier density. While conventional low-intensity photoluminescence excitation spectroscopy reveals the quantization of the exciton’s center-of-mass motion, two-photon absorption spectroscopy indicates that higher excitonic states are completely quantized by the lateral confinement. The energy positions are found to be in good agreement with one-dimensional (1D) subband calculations. Additionally, transitions between 1D subbands can be found under high excitation conditions. The singularity of the 1D-density of states is reflected by distinct peaks in the time resolved spectra of a dense electron-hole plasma, which is optically excited by high power laser pulses.
UR - http://www.scopus.com/inward/record.url?scp=84956133776&partnerID=8YFLogxK
U2 - 10.1088/0031-8949/1992/T45/043
DO - 10.1088/0031-8949/1992/T45/043
M3 - Article
AN - SCOPUS:84956133776
VL - 1992
SP - 206
EP - 209
JO - Physica Scripta
JF - Physica Scripta
SN - 0031-8949
IS - T45
ER -