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Indian Journal of Pure & Applied Physics (IJPAP) >
IJPAP Vol.44 [2006] >
IJPAP Vol.44(02) [February 2006] >
| Title: | Effect of temperature on non-linear optical properties of InGaAs/GaAs single quantum dot |
| Authors: | Bafna, M K
Sen, P
Sen, P K |
| Keywords: | Semiconductor quantum dot
Temperature dependent non-linear absorption
Exciton
Biexciton
Third-order susceptibility |
| Issue Date: | Feb-2006 |
| Publisher: | CSIR |
| IPC Code: | B82B 3/00 |
| Abstract: | Based upon the semi-classical density matrix approach, a
detailed theoretical investigation has been made to analyze the effect of
temperature on non-linear optical properties of InGaAs/GaAs single quantum dot
(QD). The temperature effects have been incorporated via temperature dependent
(i) dephasing mechanism, (ii) band gap energy and (iii) population density. The
semiconductor QD has been chosen to be small enough such that the confinement
effect dominates over the Coulombic contribution. Detailed numerical estimates
of the non-linear refraction and absorption properties have been made.
Redshifts of the non-linear refraction and absorption peaks as well as
reduction in the induced polarization are found to occur with increasing
temperature. The present analysis further reveals that the non-linear gain
reduces at higher temperature. |
| Page(s): | 152-156 |
| ISSN: | 0975-1041 (Online); 0019-5596 (Print) |
| Source: | IJPAP Vol.44(02) [February 2006]
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