Spectral tomographic imaging with aplanatic metalens
Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
Author(s)
Detail(s)
Original language | English |
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Article number | 99 |
Number of pages | 8 |
Journal / Publication | Light: Science and Applications |
Volume | 8 |
Online published | 6 Nov 2019 |
Publication status | Published - 2019 |
Externally published | Yes |
Link(s)
DOI | DOI |
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Attachment(s) | Documents
Publisher's Copyright Statement
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Link to Scopus | https://www.scopus.com/record/display.uri?eid=2-s2.0-85074837690&origin=recordpage |
Permanent Link | https://scholars.cityu.edu.hk/en/publications/publication(0bdbe118-ad16-4095-85f9-89d2e0d12b28).html |
Abstract
Tomography is an informative imaging modality that is usually implemented by mechanical scanning, owing to the limited depth-of-field (DOF) in conventional systems. However, recent imaging systems are working towards more compact and stable architectures; therefore, developing nonmotion tomography is highly desirable. Here, we propose a metalens-based spectral imaging system with an aplanatic GaN metalens (NA = 0.78), in which large chromatic dispersion is used to access spectral focus tuning and optical zooming in the visible spectrum. After the function of wavelength-switched tomography was confirmed on cascaded samples, this aplanatic metalens is utilized to image microscopic frog egg cells and shows excellent tomographic images with distinct DOF features of the cell membrane and nucleus. Our approach makes good use of the large diffractive dispersion of the metalens and develops a new imaging technique that advances recent informative optical devices.
Research Area(s)
- BAND ACHROMATIC METALENS, BROAD-BAND, HIGH-EFFICIENCY, PHASE DISCONTINUITIES, FLAT LENSES, WAVE PLATE, POLARIZATION, REFLECTION, RESOLUTION, DESIGN
Citation Format(s)
Spectral tomographic imaging with aplanatic metalens. / Chen, Chen; Song, Wange; Chen, Jia-Wern et al.
In: Light: Science and Applications, Vol. 8, 99, 2019.Research output: Journal Publications and Reviews (RGC: 21, 22, 62) › 21_Publication in refereed journal › peer-review
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