Dual-band selective circular dichroism in mid-infrared chiral metasurfaces
Optics Express, ISSN: 1094-4087, Vol: 30, Issue: 11, Page: 20063-20075
2022
- 39Citations
- 93Usage
- 11Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Metrics Details
- Citations39
- Citation Indexes39
- 39
- CrossRef35
- Usage93
- Downloads88
- Abstract Views5
- Captures11
- Readers11
- 11
Article Description
Most chiral metamaterials and metasurfaces are designed to operate in a single wavelength band and with a certain circular dichroism (CD) value. Here, mid-infrared chiral metasurface absorbers with selective CD in dual-wavelength bands are designed and demonstrated. The dual-band CD selectivity and tunability in the chiral metasurface absorbers are enabled by the unique design of a unit cell with two coupled rectangular bars. It is shown that the sign of CD in each wavelength band can be independently controlled and flipped by simply adjusting the geometric parameters, the width and the length, of the vertical rectangular bars. The mechanism of the dual-band CD selection in the chiral metasurface absorber is further revealed by studying the electric field and magnetic field distributions of the antibonding and bonding modes supported in the coupled bars under circularly polarized incident light. Furthermore, the chiral resonance wavelength can be continuously increased by scaling up the geometric parameters of the metasurface unit cell. The demonstrated results will contribute to the advance of future mid-infrared applications such as chiral molecular sensing, thermophotovoltaics, and optical communication.
Bibliographic Details
https://scholarsmine.mst.edu/mec_aereng_facwork/4873; https://scholarsmine.mst.edu/mec_aereng_facwork/4939
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85130641894&origin=inward; http://dx.doi.org/10.1364/oe.457218; http://www.ncbi.nlm.nih.gov/pubmed/36221765; https://opg.optica.org/abstract.cfm?URI=oe-30-11-20063; https://scholarsmine.mst.edu/mec_aereng_facwork/4873; https://scholarsmine.mst.edu/cgi/viewcontent.cgi?article=6406&context=mec_aereng_facwork; https://scholarsmine.mst.edu/mec_aereng_facwork/4939; https://scholarsmine.mst.edu/cgi/viewcontent.cgi?article=6472&context=mec_aereng_facwork; https://dx.doi.org/10.1364/oe.457218; https://opg.optica.org/oe/fulltext.cfm?uri=oe-30-11-20063&id=473044
Optica Publishing Group
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