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The effect of different drying methods on band gap energy and femtosecond LIDT of nano-porous anti-reflective silica thin films

机译：不同干燥方法对纳米多孔抗反射二氧化硅薄膜带隙能和飞秒清单的影响

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In this work, nano-porous anti-reflective silica thin films are deposited on the quartz samples by dip-coating in silica sol-gel. After dip-coating, the samples are divided into three groups and each group is heated in an oven with a different drying method. The effect of the heating methods on the morphology and optical properties of the coated layers are studied by SEM imaging and measuring optical transmission of the samples. Then based on the transmission data and calculation of absorption coefficient of the layers, the band gap energy of the silica thin films is calculated. In addition, laser induced damage threshold (LIDT) of the samples are measured by using 35 fs, 100 mJ femtosecond laser pulses. It can be seen that there is a distinct correlation between band gap energy and LIDT of the samples which both of them have been affected by heating method of the coated samples.
机译：在这项工作中，通过在二氧化硅溶胶-凝胶中浸涂将纳米多孔抗反射二氧化硅薄膜沉积在石英样品上。浸涂后，将样品分为三组，每组在烘箱中以不同的干燥方法进行加热。通过SEM成像和测量样品的透光率，研究了加热方法对涂层形态和光学性能的影响。然后，基于透射数据和各层的吸收系数的计算，计算二氧化硅薄膜的带隙能量。此外，使用35 fs，100 mJ飞秒激光脉冲测量样品的激光诱导损伤阈值（LIDT）。可以看出，带隙能量和样品的LIDT之间存在明显的相关性，这两者都受到涂覆样品的加热方法的影响。

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