Enhanced subwavelength photonic nanojet focusing via a graded-index round-head microcylinder

doi:10.1016/j.ijleo.2019.163973

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	Enhanced subwavelength photonic nanojet focusing via a graded-index round-head microcylinder
	H. D. Zhang
	2020
发表期刊	Optik
ISSN	0030-4026
卷号	203 页码:6
摘要	Photonic nanojet is a sub-wavelength focus generated by a dielectric microparticle, like microsphere and microcylinder. The formation of nanojet can be tuned by changing the refractive index distribution and geometrical parameters of the structure. Many applications based on photonic nanojet have been explored based on the special property of dielectric microparticles. In this letter, a graded-index structure that combines hemisphere and microcylinder is proposed, which can generate a sub-wavelength nanojet with a full width at a half maximum of 120.9 nm (0.24 lambda with 500 nm illumination wavelength). The influences of refraction index distribution and the length of cylinder on the properties of photonic nanojet are simulated and discussed. Moreover, the sensitivity of fabrication errors is analyzed to verify the feasibility of this structure.
DOI	10.1016/j.ijleo.2019.163973
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收录类别	SCI
语种	英语
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/64492
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	H. D. Zhang. Enhanced subwavelength photonic nanojet focusing via a graded-index round-head microcylinder[J]. Optik,2020,203:6.
APA	H. D. Zhang.(2020).Enhanced subwavelength photonic nanojet focusing via a graded-index round-head microcylinder.Optik,203,6.
MLA	H. D. Zhang."Enhanced subwavelength photonic nanojet focusing via a graded-index round-head microcylinder".Optik 203(2020):6.

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