Abstract
We demonstrate changes in the propagation time of 180 femtosecond pulses in a quantum-dot semiconductor optical amplifier as function of pulse input power and bias current. The results interpreted as a result of pulse reshaping by gain saturation but are also analogous to coherent population oscillations. Relative pulse delays (i.e. pulse time delay to pulse FWHM ratio) up to 40% and relative advancements up to 15% are observed when the amplifier is biased at zero current and at currents well above transparency, respectively. Under gain conditions, no pulsedistortion is seen while a considerable pulse distortion occurs at zero bias.
| Original language | English |
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| Title of host publication | Nanostructures: Physics and Technology - 13th International Symposium, Proceedings |
| Place of Publication | St. Petersburg, Russia |
| Publisher | Ioffe Physico-Technical Institute |
| Publication date | 2005 |
| Pages | 81-82 |
| ISBN (Print) | 59-36-34017-1 |
| Publication status | Published - 2005 |
| Event | Nanostructures: Physics and Technology - St. Petersburg, Russia, Russian Federation Duration: 20 Jun 2005 → 25 Jun 2005 Conference number: 13th International Symposium |
Conference
| Conference | Nanostructures: Physics and Technology |
|---|---|
| Number | 13th International Symposium |
| Country/Territory | Russian Federation |
| City | St. Petersburg, Russia |
| Period | 20/06/2005 → 25/06/2005 |