Femtosecond two-color three-pulse photon echoes for studying dephasing in silicon quantum dots
Using spectrally resolved femtosecond two-color three-pulse photon echo measurements we are able to study the dynamics of photo-excited carriers in near-spherical silicon quantum dots with an average size of 4.3 nm. The inhomogeneous broadening, dephasing time, and phase memory during carrier transfer can be obtained from this study.
KeywordsProbe Pulse Coherence Time Phase Memory Photon Echo Dephasing Time
We thank Dr. E.-C. Cho from the ARC Centre of Excellence for Advanced Silicon Photovoltaics and Photonics at The University of New South Wales for providing the sample and Mark Aizengendler and Alex Stanco from Lastek Laboratories for their contributions to the spectrometer and Garry CCD detector. This project is supported by the Australian Research Council Discovery Grant.
- 13.W. Zinth, W. Kaiser, Topics in Applied Physics, Vol. 60, (Springer-Verlag, Heidelberg, 1988)Google Scholar