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arXiv physics/0401003physics.optics
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高灵敏度吸收系数和光学非线性测量的单一实验装置

Single Experimental Setup for High Sensitive Absorption Coefficient and Optical Nonlinearities Measurements

A. Sharan, S. Abbas Hosseini, D. Goswami

摘要:

准确地知道样品的吸收系数是测量材料三阶光学非线性的前提,这对于未知样品来说是一个严重的限制。介绍了一种在一个实验装置中同时测量材料的吸收系数和三阶非线性光学系数的方法。我们使用双光束泵浦探测实验和传统的单光束z扫描在不同的条件下,以实现这一目标。在泵浦-探测z扫描实验中,我们还证明了非相互作用的探测光与泵浦光之间的反直觉耦合。

英文摘要:

Accurate knowledge of absorption coefficient of a sample is a prerequisite for measuring the third order optical nonlinearity of materials, which can be a serious limitation for unknown samples. We introduce a method, which measures both the absorption coefficient and the third order optical nonlinearity of materials with high sensitivity in a single experimental arrangement. We use a dual-beam pump-probe experiment and conventional single-beam z-scan under different conditions to achieve this goal. We also demonstrate a counterintuitive coupling of the non-interacting probe-beam with the pump-beam in pump-probe z-scan experiment.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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