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Gain-Assisted Giant Third-Order Nonlinearity of Epsilon-Near-Zero Multilayered Metamaterials
Shi, Wenjuan1,2; Liu, Hongjun1,3; Wang, Zhaolu1,2
作者部门瞬态光学研究室
2022-10
发表期刊NANOMATERIALS
ISSN2079-4991
卷号12期号:19
产权排序1
摘要

We investigate the third-order nonlinear optical properties of epsilon-near-zero (ENZ) Au/dye-doped fused silica multilayered metamaterials in the visible spectral range for TM incident by using nonlocal effective medium theory at different incidence angles. The nonlocal response affects the permittivity of anisotropic metamaterials when the thickness of the layer cannot be much smaller than the incident wavelength. By doping pump dye gain material within the dielectric layer to compensate for the metal loss, the imaginary part of the effective permittivity is reduced to 10(-4), and the optical nonlinear refractive index and nonlinear absorption coefficient are enhanced. The real and imaginary parts of the permittivity are simultaneously minimized when the central emission wavelength of the gain material is close to the ENZ wavelength, and the nonlinear refraction coefficient reaches the order of 10(-5) cm(2)/W, which is five orders of magnitude larger than that of the nonlinear response of the metamaterial without the gain medium. Our results demonstrate that a smaller imaginary part of the permittivity can be obtained by doping gain materials within the dielectric layer; it offers the promise of designing metamaterials with large nonlinearity at arbitrary wavelengths.

关键词epsilon-near-zero (ENZ) nonlocal effective medium theory multilayered metamaterials third-order nonlinear gain materials
DOI10.3390/nano12193499
收录类别SCI
语种英语
WOS记录号WOS:000866933700001
出版者MDPI
引用统计
文献类型期刊论文
条目标识符http://ir.opt.ac.cn/handle/181661/96177
专题瞬态光学研究室
通讯作者Liu, Hongjun
作者单位1.Chinese Acad Sci, Xian Inst Opt & Precis Mech, State Key Lab Transient Opt & Photon, Xian 710119, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100084, Peoples R China
3.Shanxi Univ, Collaborat Innovat Ctr Extreme Opt, Taiyuan 030006, Peoples R China
推荐引用方式
GB/T 7714
Shi, Wenjuan,Liu, Hongjun,Wang, Zhaolu. Gain-Assisted Giant Third-Order Nonlinearity of Epsilon-Near-Zero Multilayered Metamaterials[J]. NANOMATERIALS,2022,12(19).
APA Shi, Wenjuan,Liu, Hongjun,&Wang, Zhaolu.(2022).Gain-Assisted Giant Third-Order Nonlinearity of Epsilon-Near-Zero Multilayered Metamaterials.NANOMATERIALS,12(19).
MLA Shi, Wenjuan,et al."Gain-Assisted Giant Third-Order Nonlinearity of Epsilon-Near-Zero Multilayered Metamaterials".NANOMATERIALS 12.19(2022).
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