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14 October 2022 Fabrication of polarization-sensitive metasurfaces by femtosecond laser direct writing
Dongfang Li, Tianyu Zhao, Yanping Yuan, Xinyang Guo, Jimin Chen
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Proceedings Volume 12343, 2nd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2022); 123431X (2022) https://doi.org/10.1117/12.2649120
Event: 2nd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2022), 2022, Qingdao, China
Abstract
Plasmonic colors produced by the resonant interaction between light and metallic nanostructures have been extensively studied. However, the current manufacturing methods for plasmonic metasurfaces rely heavily on lithography and templates, which are prohibitive in terms of scalability, process complexity, efficiency, and economy, severely limiting their wide application. In this study, a method to fabricate polarization-sensitive metal-insulator-metal metasurfaces by femtosecond laser-induced dewetting of gold films has been proposed. The elongation direction of the dewetted nanostructures is controlled by the laser polarization. The structural colors formed by the metasurface are sensitive to the polarization of illumination light. By adjusting the laser power and scanning speed, the metasurfaces can appear yellow, red, and green. This method is expected to be applied in anti-counterfeiting and optical multiplexing.
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Dongfang Li, Tianyu Zhao, Yanping Yuan, Xinyang Guo, and Jimin Chen "Fabrication of polarization-sensitive metasurfaces by femtosecond laser direct writing", Proc. SPIE 12343, 2nd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2022), 123431X (14 October 2022); https://doi.org/10.1117/12.2649120
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KEYWORDS
Femtosecond phenomena
Dewetting
Nanostructures
Plasmonics
Laser processing
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