The enhancement of the Goos–Hänchen (GH) shift has become a research hotspot due to its promoted application of the GH effect in various fields. However, currently, the maximum GH shift is located at the reflectance dip, making it difficult to detect GH shift signals in practical applications. This paper proposes a new metasurface to achieve reflection-type bound states in the continuum (BIC). The GH shift can be significantly enhanced by the quasi-BIC with a high quality factor. The maximum GH shift can reach more than 400 times the resonant wavelength, and the maximum GH shift is located exactly at the reflection peak with unity reflectance, which can be applied to detect the GH shift signal. Finally, the metasurface is used to detect the variation in the refractive index, and the sensitivity can reach 3.58 × 10⁶ μm/RIU (refractive index unit) according to the simulation’s calculations. The findings provide a theoretical basis to prepare a metasurface with high refractive index sensitivity, a large GH shift, and high reflection.

As emerging new material, graphene has inspired great research interest. However, most of the studies focused on how to improve the absorption efficiency of graphene, but payed little attention on broadening absorption bandwidth while ensuring high absorption efficiency. In this work, we proposed a hybrid nanostructure, which not only can improve absorption efficiency but also can increase absorption bandwidth. The proposed hybrid nanostructure consists of a monolayer graphene sandwiched between three Ag gratings with different widths and a SiO₂ spacer on a Ag substrate, these three gratings and substrate can excite three independent magnetic dipole resonances. In our calculations, we numerically demonstrate the proposed hybrid structure can achieve graphene absorption bandwidth of 0.311 μm in near-infrared region with absorption exceeding 30% . We also studied absorption peaks dependence on gratings widths and SiO₂ spacer thickness, and explained the results using physical mechanism. Our research can provide a theoretical guidance for future device preparation.

The predecessor of China Optics was China Optics and Applied Optics Digest, which was founded in 1985. At that time, it was the only retrieval journal in the field of optics in China. At the end of 2008, China Optics and Applied Optics Digest was renamed 《中国光学》的前身是1985年创办的《中国光学与应用光学文摘》，当时是国内光学领域唯一的检索刊物。2008年底《中国光学与应用光学文摘》转型更名为《中国光学与应用光学》期刊，刊载内容突破了文摘的限制，正式成为学术刊物。

SP-QBIC resonances are highly sensitive to asymmetry parameters. Meanwhile, achieving polarization-wavelength-stable QBIC resonances in metasurfaces remains challenging. To address these issues, this study proposes hetero-material out-of-plane (HOP) metasurfaces. First, the influence of the asymmetry parameter on the resonance spectra of the HOP asymmetric metasurfaces (AMS) is analyzed. Compared with in-plane (IP) AMS, the QBIC resonance wavelength of the HOP AMS remains essentially stable as the asymmetry parameter varies, and both the resonance linewidth and the quality (Q) factor exhibit stronger robustness—especially when the hetero-material is located up the symmetric metasurface (HOP_u). Second, the effect of the refractive index of the hetero-material n_l on the resonance spectra of the HOP_u AMS and (the hetero material is located below the symmetric metasurface) HOP_b AMS is investigated. As the n_l increases, the QBIC resonance wavelengths of HOP AMS red-shift; meanwhile, the Q factor of the HOP_u gradually decreases, whereas that of the HOP_b AMS remains almost unchanged. Simulations reveal that HOP AMS resonances exhibit strong robustness against device fabrication errors. Finally, by varying the incident light polarization angle, it is verified that the proposed HOP AMS enables excitation polarization wavelength stable QBIC resonance. The multipole decomposition elucidates the physical mechanism by which HOP AMS can excite polarization wavelength stable SP-QBIC resonances. The key structural parameters of the HOP AMS for exciting polarization wavelength stable SP-QBIC resonance were confirmed. This study provides a theoretical foundation for designing and fabricating metasurfaces that support resonance stable and polarization wavelength stable QBIC resonances.

To instruct interior lighting design of aviation cockpit and ensure the work efficiency and comfort of pilots, and reduce safety accidents caused by light environment and visual fatigue during flight, it is important to establish a multi-dimensional ergonomic evaluation mechanism of cockpit light environment. In this paper, by improving Jdms' mental load theory, we establish a thorough experimental scheme based on physiological workload, mental workload, work performance and physiological work performance to evaluate the cockpit ergonomic under different light environment multi-dimensionally. Firstly, 12 evaluation indexes including job accuracy, job speed, blinking, heart rate variability, average fixation time, saccadic speed, mental demand, physical demand, operational performance, time demand, degree of confusion and degree of effort are obtained through the experiment, and then the weight of each evaluation index is calculated by entropy method to construct the ergonomic evaluation model. The evaluation results of physiological workload, mental load, work performance and physiological work performance were combined to obtain the final ergonomic evaluation results. According to our experimental results, it was found that light environment for pilot to get the highest ergonomic efficiency is 1500 lx light illumination and 5000K color temperature. The results provide a reference for the ergonomic experiment of aircraft cockpit and the design of aviation cockpit lighting system.