Dynamics of GaAs/AlGaAs microdisk lasers

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

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


Dynamic response of a GaAs/AlGaAs microdisk laser has been experimentally investigated using femtosecond optical pumping. Below the lasing threshold, the delay time of the emission pulse from the microdisk hardly changes with the pump power. Above the lasing threshold, the delay time is shortened dramatically, and it decreases with increasing the pump power. The theoretical simulation based on the rate equations reproduces the experimental observation after the effect of carrier diffusion is taken into account. The simulation result illustrates that the speed of a microdisk laser is limited mainly by the carrier diffusion in the disk plane.

Original languageEnglish (US)
Pages (from-to)2304-2306
Number of pages3
JournalApplied Physics Letters
Issue number15
StatePublished - Oct 9 2000

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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