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首页> 外文会议>Conference on Organic Light-Emitting Materials and Devices >Fast and ultrafast response of aligned organic nanofibers - towards organic nanolasers
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Fast and ultrafast response of aligned organic nanofibers - towards organic nanolasers

机译：将对齐的有机纳米纤维 - 朝向有机纳米玻璃的快速和超快响应

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Systematic investigations of luminescence lifetimes of organic phenylene nanofibers are presented as a function of intrinsic parameters such as morphology or bleaching factor as well as extrinsic parameters such as substrate material, coating or excitation intensity. By varying either one of these parameters, the decay times of the electronic excitation can be varied. This should have a strong influence on the efficiency of nanolasing, which is observed by increasing the excitation intensity of a femtosecond pump laser. Lasing action starts at pump fluences as low as a few μJ/cm2 per pulse. In ensemble measurements, the number of lasing modes depends strongly on the density of contributing nanofibers. In spatially resolved measurements, the nonlinear optical response of individual nanofibers is investigated. This enables us to make a correlation between the morphological features of the nanofibers, as deduced from atomic-force microscopy, and their lasing properties.
机译：系统研究有机亚苯基纳米纤维的生长寿命作为本质参数的函数，例如形态学或漂白因子以及外部参数，如衬底材料，涂层或激发强度。通过改变这些参数中的任何一个，可以改变电子激发的衰减时间。这应该对纳米溶液的效率产生强烈影响，这通过增加飞秒泵激光的激发强度观察。激光动作从泵流量开始，每个脉冲低至几μJ/ cm2。在集合测量中，激光模式的数量强烈取决于纳米纤维的贡献密度。在空间分辨的测量中，研究了各种纳米纤维的非线性光学响应。这使我们能够在原子力显微镜中推导的纳米纤维的形态学特征和它们的激光特性之间进行相关性。

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