Two-photon absorption of CdTe:Mn quantum dots in aqueous solution

Liu Liwei; Li Yu; Hu Siyi; Tao Haiyan; Chen Guibo; Tan Xin; Zhang Xihe

doi:10.3788/HPLPB20132502.0350

Volume 25 Issue 02

Dec. 2012

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Article Navigation > High Power Laser and Particle Beams > 2013 > 25(02): 350-354

Jia Rui, Wang Qingguo, Wang Shuqiao, et al. Model of field-to-line coupling in a reverberation chamber based on transmission line theory[J]. High Power Laser and Particle Beams, 2014, 26: 014006. doi: 10.3788/HPLPB201426.014006

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Liu Liwei, Li Yu, Hu Siyi, et al. Two-photon absorption of CdTe:Mn quantum dots in aqueous solution[J]. High Power Laser and Particle Beams, 2013, 25: 350-354. doi: 10.3788/HPLPB20132502.0350

Citation:

Liu Liwei, Li Yu, Hu Siyi, et al. Two-photon absorption of CdTe:Mn quantum dots in aqueous solution[J]. High Power Laser and Particle Beams, 2013, 25: 350-354. doi: 10.3788/HPLPB20132502.0350

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Two-photon absorption of CdTe:Mn quantum dots in aqueous solution

doi: 10.3788/HPLPB20132502.0350

1.
School of Science,Changchun University of Science and Technology,Changchun 130022,China

Received Date: 2012-04-10
Rev Recd Date: 2012-09-20
Publish Date: 2013-02-10

Abstract

Abstract

The two-photon absorption of water soluble CdTe quantum dots and Mn2+-doped CdTe quantum dots in four different sizes has been studied, by using the open Z-scan technique, with a Ti: sapphire laser at 800 nm wavelength, 50 fs pulsewidth, 1 kHz repetition frequency. The results show that, the two-photon absorption coefficient of CdTe: Mn quantum dots is 1.1 times that of CdTe quantum dots for the same growth time, and the relationship between the two-photon absorption coefficient of quantum dots and the particle size is inverse proportion, because the nonlinear absorption of CdTe: Mn quantum dots belongs to the saturated absorption. It is shown that Mn2+-doped quantum dots exhibit good two-photon absorption phenomenon, and have broad application prospects in optical switches and optical limiting devices.
- quantum dots,
- Z-scan,
- two-photon absorption,
- absorption spectrum,
- quantum size

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