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Nonlinear absorption spectra for intersubband transitions of CdSe/ZnS spherical quantum dots
J. Nanophoton. 5, 051810 (Jun 10, 2011); http://dx.doi.org/10.1117/1.3599444
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Add to FacebookThe electronic structure and optical properties of a one-electron quantum dot (QD) were investigated by assuming a spherically symmetric confining potential of finite depth. In this particular case CdSe is surrounded by ZnS. The energy eigenvalues and wave functions dependence on QD dimension were calculated by using effective mass approximation. We also calculated energies of s, p, and d states, oscillator strengths, and the linear and third-order nonlinear intersubband optical absorption coefficients as a function of the QD dimension, incident photon energy, and incident optical intensity for the 1s-1p, 1p-1d, and 1p-2s transitions. Even in a simple composition, QD correct calculation of oscillator strength differs from the simplified approach in the most sensitive QD radius region below one Bohr radius.
© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE)
History
Received Feb 01, 2011
Accepted May 23, 2011
Revised Apr 28, 2011
Published online Jun 10, 2011
Accepted May 23, 2011
Revised Apr 28, 2011
Published online Jun 10, 2011
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Radmila Kostić and Dušanka Stojanović, "Nonlinear absorption spectra for intersubband transitions of CdSe/ZnS spherical quantum dots",
J. Nanophoton. 5, 051810 (Jun 10, 2011); http://dx.doi.org/10.1117/1.3599444
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