Nonlinear optical investigations of Quinine and Quinotoxine salts by Z-scan technique
Nonlinear optical investigations of Quinine and Quinotoxine salts by Z-scan technique
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DOI：
10.1016/j.optlastec.2016.10.004
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发表时间：
2017-03
影响因子：
5
通讯作者：
M. Zidan;A. Arfan;A. Allahham
中科院分区：
文献类型：
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作者：
M. Zidan;A. Arfan;A. Allahham
采用Z扫描技术研究了奎宁及其盐1-（羧甲基）-6-甲氧基-4-（3-（3-乙烯基哌啶-4-基）丙酰基）喹啉-1-鎓（Quinotoxine）的非线性光学性质。使用UV-可见光、FTIR和NMR测量对两种盐进行表征。表征光谱证实了所制备的“奎诺毒素“盐的预期分子结构。z扫描测量用CW二极管激光器在635 nm波长和26 mW功率下进行。测量了样品的非线性吸收系数（β）、非线性折射率（n2）、基态吸收截面（σg）、激发态吸收截面（σex）和热光系数。结果表明，σ ex大于σ g，说明反饱和吸收（RSA）是导致吸收非线性的主要机制.结果表明，这种材料应该被认为是一个有前途的候选人，为未来的光学器件应用。
Z-scan technique was used to investigate the nonlinear optical properties of Quinine and 1-(carboxymethyl)-6-methoxy-4-(3-(3-vinylpiperidin-4-yl) propanoyl) quinolin-1-ium chloride (Quinotoxine) salts. The two salts were characterized using UV–visible, FTIR and NMR measurements. The characterization spectra confirm the expected molecular structure of the prepared “Quinotoxine “ salt. The z-scan measurements were performed with a CW Diode laser at 635 nm wavelength and 26 mW power. The nonlinear absorption coefficient (β), nonlinear refractive index (n2), the ground-state absorption cross sections (σg), the excited-state absorption cross sections (σex) and thermo-optic coefficient of the samples were determined. Our results reveal that the σexis higher than the σgindicating that the reverse saturable absorption (RSA) is the dominating mechanism for the observed absorption nonlinearities. The results suggest that this material should be considered as a promising candidate for future optical devices applications.