Observation of Two-Photon Induced Excited-State Absorption Phenomena in C60 and C70 Derivatives
OUYANG Xin-Hua** , LU Liang, GE Zi-Yi
Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo 315201
Abstract ：Four fullerene dyads with different cabazole units, named a, b, c, d, were studied by using a femtosecond laser with 780 nm wavelength using Z-scan methods. Interestingly, all of them show strong two-photon induced excited-state absorption behaviors, which were observed firstly in femtosecond timescale. The values of their excited-state absorption cross-section were up to 6.07×10?18 , 7.27×10?18 , 3.86×10?18 and 4.51×10?18 cm?1 for a, b, c, and d, respectively.
收稿日期: 2011-12-12
出版日期: 2012-07-31
:
78.20.-e
(Optical properties of bulk materials and thin films)
78.20.Ci
(Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))
78.20.Ek
(Optical activity)
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2012, Vol. 29 
