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中国物理快报 2007
Nonlinear Optical Properties of Novel C60 Derivatives under Picosecond Laser ExcitationKeywords: 42,65,An,33,15,Kr,42,70,Nq Abstract: We investigate the third-order nonlinear optical properties of six novel fullerene derivatives under picosecond laser excitation by Z-scan technique. The experimental results reveal that all the derivatives have very large nonlinear absorption coefficient under 532 nm pulses excitation and great third-order nonlinear refraction index under 1064 nm pulses excitation. The molecular second hyperpolarizabilities are obtained from the experimental results.
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