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足球烯分子C₆₀及C₇₀的反饱和吸收性质与光限制效应

The reverse saturable absorption and optical limiting effects in buckminsterfullerene

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【作者】杨少辰；龚旗煌；孙宇星；夏宗炬；邹英华；费林；周锡煌；羌笛；顾振南；吴永庆；孙亦梁；

【Author】 YANG Shaochen GONG Qihuang SUN YuxinXIA Zengju ZOU Yinghua(Department of Physics, Peking University, Beijing 100871) FEI Lin ZHOU Xihuang QIANG Di GU ZhengnanWU Yongqing SUN Yiliang(Department of Chemistry, Peking University, Beijing 100871) (Received 15 July 1992)

【机构】北京大学物理系；北京大学化学系；北京大学化学系北京100871；北京100871；北京100871；

【摘要】报道了对足球烯分子纯C₆0及纯C₇0的光限制效应的研究结果,讨论了样品的浓度及三重态寿命对光限制阈值的影响.首次报道在足球稀分子中发现的三重态吸收饱和现象,并阐述了其产生的原因及对光限制效应的影响.更多还原

【Abstract】 The reverse saturable absorption and optical limiting effect in pure fullerene molecules C60and C70are reported. The discussions on the influences of concentrations and life-time of triplet states upon the critical energy fluence of optical limiting are given. The absorption induced by the transitions of triplet states of fullerene molecules exhibits a saturable process which is demonstrated for the first time to our knowledge. This phenomenon is reported and its influence on optical limiting is discussed.更多还原