A micro-iridescent focus generated from a microsphere on a reflective nanograting

doi:10.1007/s00339-022-05744-1

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	A micro-iridescent focus generated from a microsphere on a reflective nanograting
	S. Zhou; Y. Z. Shi; K. W. Li and W. C. Zhou
	2022
发表期刊	Applied Physics a-Materials Science & Processing
ISSN	0947-8396
卷号	128 期号:7 页码:6
摘要	Nanoscale high-intensity illuminations can be produced by dielectric microspheres, which are used for super-resolution imaging and optical nonlinear enhancement. Herein, a microscale chromatic dispersion assisted of a microsphere is experimentally presented. We find that a micro-iridescent focus can be generated from a microsphere put on a reflective nanograting under an oblique white-light illumination. The size of the micro-iridescent focus is smaller than the diameter of the microsphere, and the long wavelengths of light contributing to the micro-iridescent focus are distributed farther away from the microsphere. Furthermore, a curved-iridescent focus can also be obtained. Finally, it shows that the direction of the micro-iridescent focus is perpendicular to that of the reflective nanograting and the role of oblique illumination in experiments is discussed numerically. Our works present that a microsphere on a reflective nanograting can produce a microscale chromatic dispersion. This novel structure may have potential applications in the miniaturization of optical spectrometers.
DOI	10.1007/s00339-022-05744-1
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收录类别	sci ; ei
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/181722/66840
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	S. Zhou,Y. Z. Shi,K. W. Li and W. C. Zhou. A micro-iridescent focus generated from a microsphere on a reflective nanograting[J]. Applied Physics a-Materials Science & Processing,2022,128(7):6.
APA	S. Zhou,Y. Z. Shi,&K. W. Li and W. C. Zhou.(2022).A micro-iridescent focus generated from a microsphere on a reflective nanograting.Applied Physics a-Materials Science & Processing,128(7),6.
MLA	S. Zhou,et al."A micro-iridescent focus generated from a microsphere on a reflective nanograting".Applied Physics a-Materials Science & Processing 128.7(2022):6.

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