Dynamics of optical nonlinearities in CdSe/ZnS nanocrystals

J. H. Kyhm; K. Kyhm; K. Kyhm; S. M. Kim; H. S. Yang; Y. Masumoto

Conference on Lasers and Electro-Optics/Pacific Rim 2007
(Optica Publishing Group, 2007),
paper WP_091

Dynamics of optical nonlinearities in CdSe/ZnS nanocrystals

J. H. Kyhm, K. Kyhm, S. M. Kim, H. S. Yang, and Y. Masumoto

Conference on Lasers and Electro-Optics/Pacific Rim 2007

Seoul Republic of Korea
ISBN: 1-4244-1174-2

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Poster Session I (WP)

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J. H. Kyhm, K. Kyhm, S. M. Kim, H. S. Yang, and Y. Masumoto, "Dynamics of optical nonlinearities in CdSe/ZnS nanocrystals," in Conference on Lasers and Electro-Optics/Pacific Rim 2007, (Optica Publishing Group, 2007), paper WP_091.

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Abstract

We performed time-resolved luminescence and polarization-resolved pump-probe experiments in CdSe/ZnS nanocrystals (NCs) under low and high excitations at room temperatures. At high excitations, the PL spectra shows a red shift (0.54 meV) and two-step decay. In pump-probe experiments, we observed very fast spin-flip process (~1 ps) and population oscillation, which is attributed to the Rabi oscillation.

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