Chen, J., Fan, W.J., Ding, Y., Xu, Q., Zhang, X.W., Xu, D.W., Yoon, S.F. and Zhang, D.H. (2011) Nanostructure model and optical properties of InAs/GaAs quantum dot in vertical cavity surface emitting lasers. Opto-Electronics Review, 19(4), pp. 449-453. (doi: 10.2478/s11772-011-0043-1)
Full text not currently available from Enlighten.
Publisher's URL: http://dx.doi.org/10.2478/s11772-011-0043-1
Abstract
We apply 8-band k.p model to study InAs/GaAs quantum dots (QDs). The strain was calculated using the valence force field (VFF) model which includes the four nearest-neighbour interactions. For the optical properties, we take into account both homogeneous and non-homogeneous broadening for the optical spectrum. Our simulation result is in good agreement with the experimental micro-photoluminescence (μ-PL) result which is from InAs/GaAs QD vertical cavity surface emitting lasers (VCSELs) structure wafer at room temperature. Accordingly, our simulation model is used to predict the QD emission from this QD-VCSELs structure wafer at different temperature ranging from 200–400 K. The simulation results show a decrease of 41 meV of QD ground state (GS) transition energy from 250–350 K. The changes of QDGS transition energy with different temperature indicate the possible detuning range for 1.3-μm wave band QD-VCSELs applications without temperature control. Furthermore, QD differential gain at 300 K is computed based on this model, which will be useful for predicting the intrinsic modulation characteristics of QD-VCSELs.
Item Type: | Articles |
---|---|
Status: | Published |
Refereed: | Yes |
Glasgow Author(s) Enlighten ID: | Ding, Dr Ying |
Authors: | Chen, J., Fan, W.J., Ding, Y., Xu, Q., Zhang, X.W., Xu, D.W., Yoon, S.F., and Zhang, D.H. |
College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
Journal Name: | Opto-Electronics Review |
Publisher: | Association of Polish Electrical Engineers |
ISSN: | 1230-3402 |
ISSN (Online): | 1896-3757 |
University Staff: Request a correction | Enlighten Editors: Update this record