Nonlinear Refraction and Absorption Properties of ZnS Semiconductor Quantum Dots

Heng Yu Tan; Qing Chang; Xi Wen Liu

doi:10.4028/www.scientific.net/MSF.900.65

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HomeMaterials Science ForumMaterials Science Forum Vol. 900Nonlinear Refraction and Absorption Properties of...

Nonlinear Refraction and Absorption Properties of ZnS Semiconductor Quantum Dots

Abstract:

The nonlinear absorption and nonlinear refraction properties of water soluble ZnS semiconductor quantum dots are studied by using Z-scan technique with the action of 400 nm and 532 nm femtosecond laser pulses. The experimental results show that the three order nonlinear effect of ZnS semiconductor quantum dot is stronger in 400 nm laser pulse, and it is weaker in 532 nm laser pulse. The three order nonlinear polarization coefficient of ZnS semiconductor quantum dot is 4.58×10^-13esu with the action of 400 nm laser pulse, it is 9.22×10^-14 esu with the action of 532nm laser pulse. The ZnS semiconductor quantum dot has a relatively good three order optical nonlinear effect with the action of 400nm wavelength laser pulse.

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Periodical:

Materials Science Forum (Volume 900)

Pages:

65-68

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.900.65

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Online since:

July 2017

Authors:

Heng Yu Tan*, Qing Chang, Xi Wen Liu

Keywords:

Nonlinear Absorption, Nonlinear Refraction, Quantum Dot, ZnS, Z-Scan

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