Optical nonlinearities of alcoholic liquids under high-repetition-rate femtosecond lasers by single beam time-resolved eclipsed Z-scan
Optical nonlinearities of alcoholic liquids under high-repetition-rate femtosecond lasers by single beam time-resolved eclipsed Z-scan
复制标题
单光束时间分辨遮蔽 Z 扫描在高重复率飞秒激光下酒精液体的光学非线性
DOI：
10.1016/j.optlastec.2018.08.054
复制
发表时间：
2019-01
影响因子：
5
通讯作者：
Liu Weiwei
中科院分区：
文献类型：
--
作者：
Qi Pengfei;Su Qiang;Lu Dan;Lin Lie;Zhang Nan;Liu Weiwei
非线性光学液体的实验和应用往往由于快速自聚焦效应和慢速自散焦效应的存在和竞争而变得复杂。因此，液体非线性的时间分辨测量非常重要。在这项工作中，使用单光束时间分辨遮蔽Z扫描（即单束时间分辨Z扫描和遮蔽Z扫描方法的结合）演示了高重复率飞秒激光下酒精液体由于热效应累积而导致的光学非线性随时间的演化（酒精液体经常被用作许多有机非线性分子的溶剂并用于许多非线性光学实验）。由酒精液体的分子重新取向产生的纯自聚焦非线性可以通过简单的数据处理来精确提取。可以得出，甲醇和乙醇激光照射t=17.35和22.25μs后，热非线性光学效应累积的特征时间分别为479.28和601.62μs，快速自聚焦效应将被热非线性光学效应完全掩盖。 “组合”Z 扫描技术还可以广泛应用于其他先进材料。
The experiments and applications of nonlinear optical liquids are often complicated by the presence and competition of the fast self-focusing and slow self-defocusing effects. As a result, the time-resolved measurements of liquids nonlinearities are very crucial. In this work, the temporal evolution of optical nonlinearities due to the accumulation of thermal effect for alcoholic liquids—frequently adpoted as the solvent of many organic nonlinear molecules and used in many nonlinear optical experiments—under high-repetition-rate femtosecond lasers is demonstrated using single beam time-resolved eclipsed Z-scan, that is, the combination of single beam time-resolved Z-scan and eclipsed Z-scan methods. The pure self-focusing nonlinearities arising from molecular reorientation of alcoholic liquids can be precisely extracted by a simple data processing. It can be concluded that the characteristic time of the accumulation of thermal nonlinear optical effects is 479.28 and 601.62 μs, and the fast self-focusing effects will be completely masked by the thermal nonlinear optical effects aftert= 17.35 and 22.25 μs of laser irradiation for methanol and ethanol, respectively. The “combined” Z-scan technique can also have an extensive application for other advanced materials.
登录
查看更多内容
影响因子：
4.6
作者：
Nee CH;Yap SL;Tou TY;Chang HC;Yap SS
通讯作者：
Yap SS
影响因子：
5
作者：
M. Zidan;A. Arfan;A. Allahham
通讯作者：
M. Zidan;A. Arfan;A. Allahham
影响因子：
2.1
作者：
Falconieri, M;Salvetti, G
通讯作者：
Salvetti, G
影响因子：
10.9
作者：
A. C. Brandão-Silva;Rogério M.A. Lima;C. Fantini;A. J. Jesus-Silva;M. Alencar;J. Hickmann;Rishabh Jain;M. Strano;E. Fonseca
通讯作者：
A. C. Brandão-Silva;Rogério M.A. Lima;C. Fantini;A. J. Jesus-Silva;M. Alencar;J. Hickmann;Rishabh Jain;M. Strano;E. Fonseca
DOI：
10.1088/1464-4258/1/6/302
发表时间：
1999-11-01
期刊：
JOURNAL OF OPTICS A-PURE AND APPLIED OPTICS
影响因子：
--
作者：
Falconieri, M
通讯作者：
Falconieri, M