期刊
OPTICS COMMUNICATIONS
卷 370, 期 -, 页码 140-144出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.optcom.2016.03.008
关键词
Microsphere; Super-resolution; Pupil mask; Diffraction limit; Near-field
类别
资金
- Ser Cymru National Research Networking Advanced Engineering and Materials, UK [NRNF66, NRN113]
Recent researches have shown small dielectric microspheres can perform as super-resolution lens to break optical diffraction limit for super-resolution applications. In this paper, we show for the first time that by combining a microsphere lens with a pupil mask, it is possible to precisely control the focusing properties of the lens, including the focusing spot size and focal length. Generally, the pupil mask can significantly reduce the spot size which means an improved resolution. The work is important for advancing microsphere-based super-resolution technologies, including fabrication and imaging. Crown Copyright (C) 2016 Published by Elsevier B.V. All rights reserved.
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