Murzyn, P. et al. (2002) Picosecond intersubband dynamics in p-Si/SiGe quantum-well emitter structures. Applied Physics Letters, 80(8), pp. 1456-1458. (doi: 10.1063/1.1452794)
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Abstract
We report time-resolved (ps) studies of the dynamics of intersubband transitions in p-Si/SiGe multiquantum-well structures in the far-infrared (FIR) regime, ℏω<ℏωLO, utilizing the Dutch free electron laser, (entitled FELIX—free electron laser for infrared radiation). The calculated scattering rates for optic and acoustic phonon, and alloy scattering have been included in a rate equation model of the transient FIR intersubband absorption, and show excellent agreement with our degenerate pump-probe spectroscopy measurements where, after an initial rise time determined by the resolution of our measurement, we determine a decay time of ∼10 ps. This is found to be approximately constant in the temperature range from 4 to 100 K, in good agreement with the predictions of alloy scattering in the Si0.7Ge0.3 wells.
| Item Type: | Articles |
|---|---|
| Additional Information: | This Si/SiGe program is funded by DARPA on the USAF Contract No. F-19628-99-C-0074. |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Paul, Professor Douglas |
| Authors: | Murzyn, P., Pidgeon, C.R., Wells, J.P.R., Bradley, I.V., Ikonic, Z., Kelsall, R.W., Harrison, P., Lynch, S.A., Paul, D.J., Arnone, D.D., Robbins, D.J., Norris, D., and Cullis, A.G. |
| College/School: | College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering |
| Research Group: | Semiconductor Devices |
| Journal Name: | Applied Physics Letters |
| Publisher: | AIP Publishing |
| ISSN: | 0003-6951 |
| ISSN (Online): | 1077-3118 |
| Published Online: | 22 February 2002 |
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