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http://dx.doi.org/10.1063/1.2208549

has been cited by the following article:

• TITLE: Power Dependent of Nonlinear Absorption Coefficient of CdSe-Au Hybrid Nanocomposites

  AUTHORS: Abeer Salah, Mona Bakr, Salah Hassabelnaby, Iftitan Azzouz, Yehia Badr

  KEYWORDS: Z-Scan, Nonlinear Absorption, Optical Limiting, CdSe:Au

  JOURNAL NAME: Optics and Photonics Journal, Vol.5 No.4, April 15, 2015

  ABSTRACT: Power dependent study of optical nonlinear absorption coefficient of semiconductor-plasmonic hybrid nanocomposites of CdSe:Au was investigated using Z-scan technique, provided with nanosecond pulses of second harmonic Nd:YAG laser. The prepared materials were characterized with linear absorption and High Resolution Transmission Electron Microscope (HRTEM) which confirm the quantum confinement of CdSe as well as the formation of CdSe:Au core shell quantum dots. An analysis of power dependence open aperture Z-scan was discussed. A change from saturable absorption (SA) to reverse saturable absorption (RSA) is observed with increasing the laser power. Also, an enhancement of the nonlinear absorption coefficient of CdSe:Au of larger sizes compared to Au nanoparticles was detected.