Determination of the Triplet State Lifetime of C<sub>60</sub>/Toluene Solution and C<sub>60</sub>Thin Films by Pump-Probe Method

• 作者: Cheng Bao Yao Elisee Kponou Jin Fang Wang Ping Yuan Yun Dong Zhang
• 来源期刊: 光学与光子学期刊(英文)
• 学科: 化学
• 关键词: Excited State LIFETIMES ALL-OPTICAL Switching FULLERENES
• 年，卷（期）: 2011,（2）
• 页码范围: 81-84
• 页数: 4页
• 分类号: O6

摘要

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.