Abstract
A relation between dipole moment and radiative lifetime of quantum dots for arbitrary indices of refraction of the quantum dot and surrounding medium is derived. As limiting cases several formulas already in use are obtained and their correct use is discussed. We proceed to discuss the relation between dipole moment and radiative lifetime in interface fluctuation quantum dots (IFQD's) taking into account nonsphericity effects. This introduces a dependence on the light propagation direction. We calculate how to account for the nonsphericity of an interface fluctuation quantum dot depending on its diameter and well thickness and find that the lifetime of a typical IFQD with a 50 nm diameter is reduced by about 10% due to nonsphericity effects.
| Original language | English (US) |
|---|---|
| Article number | 035327 |
| Pages (from-to) | 353271-353276 |
| Number of pages | 6 |
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 65 |
| Issue number | 3 |
| State | Published - Jan 15 2002 |
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ASJC Scopus subject areas
- Condensed Matter Physics
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Relation between dipole moment and radiative lifetime in interface fluctuation quantum dots. / Thränhardt, A.; Ell, C.; Khitrova, Galina; Gibbs, H. M.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 65, No. 3, 035327, 15.01.2002, p. 353271-353276.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Relation between dipole moment and radiative lifetime in interface fluctuation quantum dots
AU - Thränhardt, A.
AU - Ell, C.
AU - Khitrova, Galina
AU - Gibbs, H. M.
PY - 2002/1/15
Y1 - 2002/1/15
N2 - A relation between dipole moment and radiative lifetime of quantum dots for arbitrary indices of refraction of the quantum dot and surrounding medium is derived. As limiting cases several formulas already in use are obtained and their correct use is discussed. We proceed to discuss the relation between dipole moment and radiative lifetime in interface fluctuation quantum dots (IFQD's) taking into account nonsphericity effects. This introduces a dependence on the light propagation direction. We calculate how to account for the nonsphericity of an interface fluctuation quantum dot depending on its diameter and well thickness and find that the lifetime of a typical IFQD with a 50 nm diameter is reduced by about 10% due to nonsphericity effects.
AB - A relation between dipole moment and radiative lifetime of quantum dots for arbitrary indices of refraction of the quantum dot and surrounding medium is derived. As limiting cases several formulas already in use are obtained and their correct use is discussed. We proceed to discuss the relation between dipole moment and radiative lifetime in interface fluctuation quantum dots (IFQD's) taking into account nonsphericity effects. This introduces a dependence on the light propagation direction. We calculate how to account for the nonsphericity of an interface fluctuation quantum dot depending on its diameter and well thickness and find that the lifetime of a typical IFQD with a 50 nm diameter is reduced by about 10% due to nonsphericity effects.
UR - http://www.scopus.com/inward/record.url?scp=0037080745&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0037080745&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0037080745
VL - 65
SP - 353271
EP - 353276
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 0163-1829
IS - 3
M1 - 035327
ER -