Abstract
The influence of radiative coupling on the four-wave-mixing signals of multiple-quantum-well structures is investigated theoretically for excitation at the excitonic resonance. It is shown that amplitude and shape of the FWM signals depend strongly on the number of quantum wells N in the sample and on the periodicity of the structure. For a fixed delay time τ12, the signal amplitude of a Bragg structure increases quadratically with N due to constructive interference as long as the radiative decay rate Nγrad is small compared to the inverse delay time τ12-1. For large N, if the enhanced radiative decay rate exceeds the inverse delay time, superradiant emission leads to a decrease of the observed signals with increasing N. The signals of anti-Bragg structures with an odd number of quantum wells decrease with increasing N due to destructive interference effects whereas anti-Bragg structures with an even number of quantum wells behave similarly to Bragg structures.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 19-22 |
| Number of pages | 4 |
| Journal | Physica Status Solidi (A) Applied Research |
| Volume | 164 |
| Issue number | 1 |
| State | Published - 1997 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
Cite this
Four-wave-mixing in radiatively coupled multiple-quantum-well structures : A model study. / Haas, S.; Stroucken, T.; Knorr, A.; Jahnke, F.; Koch, Stephan W.
In: Physica Status Solidi (A) Applied Research, Vol. 164, No. 1, 1997, p. 19-22.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Four-wave-mixing in radiatively coupled multiple-quantum-well structures
T2 - A model study
AU - Haas, S.
AU - Stroucken, T.
AU - Knorr, A.
AU - Jahnke, F.
AU - Koch, Stephan W
PY - 1997
Y1 - 1997
N2 - The influence of radiative coupling on the four-wave-mixing signals of multiple-quantum-well structures is investigated theoretically for excitation at the excitonic resonance. It is shown that amplitude and shape of the FWM signals depend strongly on the number of quantum wells N in the sample and on the periodicity of the structure. For a fixed delay time τ12, the signal amplitude of a Bragg structure increases quadratically with N due to constructive interference as long as the radiative decay rate Nγrad is small compared to the inverse delay time τ12-1. For large N, if the enhanced radiative decay rate exceeds the inverse delay time, superradiant emission leads to a decrease of the observed signals with increasing N. The signals of anti-Bragg structures with an odd number of quantum wells decrease with increasing N due to destructive interference effects whereas anti-Bragg structures with an even number of quantum wells behave similarly to Bragg structures.
AB - The influence of radiative coupling on the four-wave-mixing signals of multiple-quantum-well structures is investigated theoretically for excitation at the excitonic resonance. It is shown that amplitude and shape of the FWM signals depend strongly on the number of quantum wells N in the sample and on the periodicity of the structure. For a fixed delay time τ12, the signal amplitude of a Bragg structure increases quadratically with N due to constructive interference as long as the radiative decay rate Nγrad is small compared to the inverse delay time τ12-1. For large N, if the enhanced radiative decay rate exceeds the inverse delay time, superradiant emission leads to a decrease of the observed signals with increasing N. The signals of anti-Bragg structures with an odd number of quantum wells decrease with increasing N due to destructive interference effects whereas anti-Bragg structures with an even number of quantum wells behave similarly to Bragg structures.
UR - http://www.scopus.com/inward/record.url?scp=0031276254&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0031276254&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0031276254
VL - 164
SP - 19
EP - 22
JO - Physica Status Solidi (A) Applied Research
JF - Physica Status Solidi (A) Applied Research
SN - 0031-8965
IS - 1
ER -