| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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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 |
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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.
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Received: 12 December 2011
Published: 31 July 2012
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| PACS: |
78.20.-e
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(Optical properties of bulk materials and thin films)
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78.20.Ci
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(Optical constants (including refractive index, complex dielectric constant, absorption, reflection and transmission coefficients, emissivity))
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78.20.Ek
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(Optical activity)
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