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首页> 外文会议>Organic, Metallo-Organic, and Polymeric Materials for Nonlinear Optical Applications >High-fluence laser photoluminescence in C60 solutions
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High-fluence laser photoluminescence in C60 solutions

机译：C60溶液中的高通量激光光致发光

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Abstract: The nonlinear absorptive properties of C$-60$/ are of significant interest. In this paper we describe spectral emission measurements on C$-60$//toluene solutions and neat toluene in the fluence regime of 3 to 1500 J/cm$+2$/ excited by nanosecond and picosecond pulses. Ten emission lines between 547 nm and 635 nm are observed in both toluene and C$-60$/ solutions. These lines are found to correlate well with published Raman spectra of toluene. In C$-60$/ solutions an additional broad double feature is observed with peaks at 692 nm and 732 nm matching the published fluorescence spectra of C$-60$/. At the highest fluences a broad new feature appears at 655 nm, grows nonlinearly, and saturates in the C$-60$/ solution. In the blue spectral region, at wavelengths shorter than the pump wavelength, a plethora of lines are observed in neat toluene between 340 and 520 nm and found to correlate with molecular disassociation products. No evidence for breakdown, however, is apparent in the C$-60$/ solutions. Both neat toluene and C$-60$/ solutions show evidence of photochemical reaction. !25
机译：摘要：C $ -60 $ /的非线性吸收特性引起了人们的极大兴趣。在本文中，我们描述了在纳秒和皮秒脉冲激发的3至1500 J / cm $ + 2 $ /的注量范围内，对C $ -60 $ //甲苯溶液和纯甲苯的光谱发射测量。在甲苯和C $ -60 $ /溶液中均观察到547 nm至635 nm之间的10条发射线。发现这些线与已发表的甲苯拉曼光谱很好地相关。在C $ -60 $ /溶液中，观察到了另外一个宽广的双重特征，在692 nm和732 nm处的峰与已公布的C $ -60 $ /荧光光谱相匹配。在最高通量下，一个广泛的新功能出现在655 nm处，呈非线性增长，并在C $ -60 $ /溶液中饱和。在蓝色光谱区域中，在比泵浦波长短的波长处，在340至520 nm的纯甲苯中观察到过多的谱线，并发现与分子解离产物相关。但是，在C $ -60 $ /解决方案中，没有细分的证据。纯甲苯和C $ -60 $ /溶液均显示出光化学反应的迹象。 ！25

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