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Enhanced nonlinearity for filamentation in gold-nanoparticle-doped water

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摘要 We report a universal approach based on the surface plasmon resonances(SPRs) attained in filamentation in water doped with gold nanoparticles for enhancing the nonlinear refractive index. The filament-induced supercontinuum spectrum in water overlaps with SPRs of gold nanospheres, which further leads to a modification on the Kerr nonlinear refractive index. In our experiment, the measured nonlinear refractive index(n2) in water doped with gold nanoparticles increases by six times, as compared with that in pure water. Such enhancement may be useful for filament-induced nonlinear applications with modest incident intensity.
作者 袁帅 王莉荣 刘峰江 周锋全 李敏 徐晖 聂源 南君义 曾和平 Shuai Yuan;Lirong Wang;Fengjiang Liu;Fengquan Zhou;Min Li;Hui Xu;Yuan Nie;Junyi Nan;Heping Zeng(不详)
出处 《中国光学快报:英文版》 SCIE EI CAS CSCD 2019年第3期75-79,共5页 Chinese Optics Letters
基金 the National Key Research and Development Program of China (No. 2018YFB0504400) the National Natural Science Foundation of China (Nos. 61505106 and 11504237) the Innovation Program of Shanghai Municipal Education Commission (No. 201701070007E00007) the Shanghai Chenguang Project (No. 15CG51).
作者简介 Corresponding author:曾和平,hpzeng@phy.ecuu.edu.cn.
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