Ultrafast dynamics of InAs/GaAs quantum-dot microdisk lasers

K. J. Luo, J. Y. Xu, H. Cao, Y. Ma, S. H. Chang, S. T. Ho, G. S. Solomon

研究成果: Article同行評審

34 引文 斯高帕斯(Scopus)

摘要

The dynamical response of InAs/GaAs quantum-dot microdisk lasers has been experimentally investigated using femtosecond optical pumping. Because surface recombination and carrier diffusion are suppressed in the quantum dots, the response speed of a quantum-dot microdisk laser is much faster than that of a quantum-well microdisk laser. A turn-on time as short as 7.8 ps has been achieved in a quantum-dot microdisk laser at 5 K. The temperature dependence of the dynamical response of the quantum-dot microdisk lasers has also been studied over a wide temperature range. At the same pumping level, the turn-on time of the laser decreases as the temperature increases from 5 to 120 K. Such behavior may be due to a faster carrier relaxation process at higher temperature.

原文English
頁(從 - 到)3397-3399
頁數3
期刊Applied Physics Letters
78
發行號22
DOIs
出版狀態Published - 2001 五月 28

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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