Phys. Rev. B 75, 113302 (2007) [4 pages]Coherent response of a quantum dot exciton driven by a rectangular spectrum optical pulseReceived 8 December 2006; published 7 March 2007 We observe strong nonlinear absorption in the excitation profile of a single InGaAs quantum dot exciton driven by a rectangular spectrum optical pulse, in a region of detuning where the linear response is weak. Here the exciton is resonant with the temporal side-lobes of the pulse, which drive a damped Rabi oscillation. Good agreement is found between experiment and a two-level atom model. In the nonlinear regime the excitation profile exhibits features from both the rectangular spectrum and the two peaks present in the spectrum of the autocorrelation of the pulse. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.75.113302
DOI:
10.1103/PhysRevB.75.113302
PACS:
73.21.La, 03.67.Hk, 85.35.Ds
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.