Effect of solvents on optical coherence properties of CdSe/ZnS quantum dots in solution detected by femtosecond four-wave mixing

H. Kouzai; Y. Hirosawa; H. Miyagawa; N. Tsurumachi; S. Koshiba; S. Nakanishi; V. P. Biju; M. Ishikawa

Proceedings of the International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim 2011
(Optica Publishing Group, 2011),
paper J543

Effect of solvents on optical coherence properties of CdSe/ZnS quantum dots in solution detected by femtosecond four-wave mixing

H. Kouzai, Y. Hirosawa, H. Miyagawa, N. Tsurumachi, S. Koshiba, S. Nakanishi, V. P. Biju, and M. Ishikawa

Conference on Lasers and Electro-Optics/Pacific Rim 2011

Sydney Australia
28 August–1 September 2011
ISBN: 978-0-9775657-7-1

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H. Kouzai, Y. Hirosawa, H. Miyagawa, N. Tsurumachi, S. Koshiba, S. Nakanishi, V. P. Biju, and M. Ishikawa, "Effect of solvents on optical coherence properties of CdSe/ZnS quantum dots in solution detected by femtosecond four-wave mixing," in Proceedings of the International Quantum Electronics Conference and Conference on Lasers and Electro-Optics Pacific Rim 2011, (Optica Publishing Group, 2011), paper J543.

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Abstract

We report novel effect of solvents on optical coherence properties of CdSe/ZnS semiconductor quantum dots (QDs) in solution detected by femtosecond four-wave mixing (FWM) spectroscopy. The FWM signals of QDs show different time profiles and femtosecond coherence decays in three solvents. Our findings provide definite evidence that the interaction with solvent molecules predominantly determines optical coherence and line broadening properties of QDs in solution.

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