https://scholars.lib.ntu.edu.tw/handle/123456789/621094
標題: | High Contrast, Femtosecond Light Polarization Manipulation in Epsilon-near-Zero Material Coupled to a Plasmonic Nanoantenna Array | 作者: | Wang K. Li M. Hsiao H.-H. Zhang F. Seidel M. Liu A.-Y. Chen J. Devaux E. Genet C. Ebbesen T. HUI-HSIN HSIAO |
關鍵字: | anisotropic nonlinearity; epsilon-near-zero material; femtosecond optical modulation; plasmonic nanoantenna array; polarization manipulation | 公開日期: | 2021 | 卷: | 8 | 期: | 9 | 起(迄)頁: | 2791-2799 | 來源出版物: | ACS Photonics | 摘要: | Ultrafast manipulation of light polarization is crucial in many nonlinear optic and optoelectronic operations. However, most of the configurations are suffering from low modulation speed (gigahertz) or small contrast ratio. Here, by taking advantange of the anisotropic nonlinear response of indium tin oxide at its epsilon-near-zero region and plasmonic nanoantennas at their polarization-sensitive resonance, we achieve a large, ultrafast anisotropic modulation of light. A polarization elliptic rotation of 32.5° at 1.23 μm wavelength, and a phase delay between the oscillations of the linear polarization axes of π/7 within 600 fs response time is demonstrated. This approach constitutes a novel, efficient way to implement all-optical high-speed polarization modulators and retarders. © 2021 American Chemical Society |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85115641964&doi=10.1021%2facsphotonics.1c00971&partnerID=40&md5=4ecda472ce61cc397d356656a365cbad https://scholars.lib.ntu.edu.tw/handle/123456789/621094 |
DOI: | 10.1021/acsphotonics.1c00971 | SDG/關鍵字: | Light modulation; Light polarization; Nanoantennas; Optical signal processing; Plasmonics; Tin oxides; Anisotropic nonlinearity; Epsilon-near zeros; Epsilon-near-zero material; Femtosecond optical modulation; Femtoseconds; High contrast; Nanoantenna arrays; Plasmonic nanoantenna; Plasmonic nanoantenna array; Polarization manipulation; Anisotropy |
顯示於: | 工程科學及海洋工程學系 |
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