RESONANT NONLINEAR OPTICAL-RESPONSE OF THE FULLERENES C-60 AND C-70

被引：83

作者：

FLOM, SR

PONG, RGS

BARTOLI, FJ

KAFAFI, ZH

机构：

[1] Naval Research Laboratory, Washington

来源：

PHYSICAL REVIEW B | 1992年 / 46卷 / 23期

关键词：

D O I：

10.1103/PhysRevB.46.15598

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Time-resolved degenerate four-wave mixing experiments were conducted on films of pure C60 and C70 using a picosecond tunable dye laser. The fullerenes exhibit a large third-order optical response, and their dynamics show wavelength and fluence dependence. The temporal response is characterized by a long-lived component attributed to the triplet excited state and an early decay associated with population of the singlet excited state. This fast response is considerably shortened at higher laser fluences and an excitonic singlet-singlet annihilation mechanism is proposed.

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页码：15598 / 15601

页数：4

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