Chinese Optics Letters, 2005, 3 (0s): 125, Published Online: Mar. 5, 2007
Second-order nonlinear optical properties of centrosymmetric nanoparticles studied by hyper-Rayleigh scattering (HRS) technique 
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190.4410 Nonlinear optics, parametric processes 190.3970 Microparticle nonlinear optics 270.4180 Multiphoton processes 300.6410 Spectroscopy, multiphoton
Abstract
Hyper-Rayleigh scattering (HRS) technique has been used to study second-order nonlinear optical (NLO) properties of some centrosymmetric metal and semiconductor nanoparticles. All the samples display big "per particle" first hyperpolarizabilities 'beta'_(par). For centrosymmetric particles the contributions of multipolar radiations are very important to their second-order NLO responses. The metal nanoparticles show 'beta'_(par) two orders greater than that of the semiconductor ones, which can be explained by the enhancement of surface plasma resonance (SPR). It also reveals that the HRS signals are very sensitive to metal nanoparticles' aggregation.
Xin Wang, Yu Zhang, Gang Wang, Chunxiu Zhang, Degang Fu, Yaochun Shen, Zuhong Lu, Yiping Cui, Shizuyasu Ochiai , Yoshiyuki Uchida, Kenzo Kojima , Asao Ohashi . Second-order nonlinear optical properties of centrosymmetric nanoparticles studied by hyper-Rayleigh scattering (HRS) technique[J]. Chinese Optics Letters, 2005, 3(0s): 125.
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