Determination of the Triplet State Lifetime of C₆₀ /Toluene Solution and C₆₀ Thin Films by Pump-Probe Method

Cheng Bao Yao, Elisee Kponou, Yun Dong Zhang, Jin Fang Wang, Ping Yuan

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DOI: 10.4236/opj.2011.12013                

Abstract

Excited state lifetimes of C₆₀/toluene solution and C₆₀ films macromolecular were measured by pump-probe method. Relation between optical switching effect of material and pulse width of pumping field is briefly described. It is found that the faster switching speed of light is, the triplet state lifetime is shorter. A He-Ne laser, as a probe, passed through the sample in the pump-probe experiment. All-optical switching effect was realized. Changing the optical power of the pumping field, switching response of the sample and modulation depth were investigated. In certain experimental conditions, relation between transmission through the sample and response were measured by an oscilloscope. Triple state lifetime of the molecule is speculated. The result showed that C₆₀/toluene solution and C₆₀ film have a fast response time. They would be utilized in some applications, such as optical switches, photonic devices.

Keywords

Excited State Lifetimes, All-Optical Switching, Fullerenes

Conflicts of Interest

The authors declare no conflicts of interest.

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