E-mail Alert
RSS2024 Vol. 7, No. 2
Cover story: Zhang JC, Zhang MK, Fan YB et al. Miniature tunable Airy beam optical meta-device. Opto-Electron Adv 7, 230171 (2024).
Tunable Airy beams, crucial for applications like optical manipulation and laser fabrication, have faced challenges in terms of compactness, integration feasibility, and the need for enhanced tunability for dynamic trajectory manipulation. To address these issues, Professor Shumin Xiao from Harbin Institute of Technology and Professor Din Ping Tsai from City University of Hong Kong present a novel approach in this study. They introduce a new platform for Airy beam manipulation using a bilayer meta-device. This method encodes cubic and off-axis Fresnel lens phase profiles onto two metasurfaces. It allows us to dynamically manipulate the trajectories of Airy beams by rotating these two metasurfaces. The validity of this strategy is confirmed through simulations and experimental results. By overcoming existing limitations, the proposed meta-device serves as a foundation for expanding the applicability of Airy beams in various applications, including light-sheet microscopy, laser fabrication, optical tweezers, etc.
Back cover story: Armas D, Matias IR, Lopez-Gonzalez MC et al. Generation of lossy mode resonances (LMR) using perovskite nanofilms. Opto-Electron Adv 7, 230072 (2024).
Perovskite, a material very well known for its exceptional optical and electrical properties, has long been at the forefront of scientific exploration. Researchers from the Public University of Navarra and the Rey Juan Carlos University, both in Spain, have experimentally demonstrated for the first time the creation of devices based on lossy mode resonance (LMR) by depositing perovskite coatings on planar waveguides. These LMR-based devices are extremely sensitive refractometers where the key is in the precise selection of materials for the thin film, at the same time, perovskite emerges as a novel candidate with which light interacts, modulating its properties depending on the external environment. Overall, this study highlights the potential of perovskite thin films for the development of new LMR-based devices that can be used for environmental monitoring, industrial sensing, and gas sensing, among other multiple applications.
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Prof. Xiangang Luo
