THE FRACTION FREQUENCY SCATTERING SPECTRA FOR AU CLUSTERS IN LIQUID
金原子团簇的分频散射光谱研究

The Au clusters in liquid is a nonlinear optical medium.A 1/2 fraction frequency scattering peak at 580nm (1/2?1.03?1015Hz) and a 1/3 fraction frequency scattering peak at 870nm (1/3?1.03?1015Hz) were obtained as the excited wavelength at 290nm (1.03?1015Hz).When the excited wavelength is at 580nm (5.02?1014Hz),a double frequency scattering peak at 290nm (2?5.02?1014Hz) and a 2/3 fraction frequency scattering peak at 870nm (2/3?5.02?1014Hz) display.When the excited wavelength is at 870nm (3.34?1014Hz),a three times frequency scattering peak at 290nm (3?3.34?1014Hz) and a 3/2 fraction frequency scattering peak at 580nm (3/2?3.34?1014Hz).The results show that fraction frequency scattering and double frequency scattering have the similar scattering behaviour as the resonance scattering.According to the interaction equation of the excited light and gold clusters,and Fourier transformation theory,some nonlinear scattering phenomena have been discussed.