Abstract
A new phenomenon of an obvious dip of the transmission from subwavelength slits can be obtained if we change the wavelength of the incident light in the visible regime is proposed. Theory shows that there exist maximum reflectivities if we change wavelengths for different slit widths. The theoretical results are consistent with both finite-difference time-domain (FDTD) simulations and experiments.
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Acknowledgements
This work was partially supported by the National Natural Science Foundation of China (61705058), Natural Science Foundation of Jiangsu Province (BK20170302), the Fundamental Research Fund for the Central Universities of China (2016B12314) and the Changzhou Sci. & Tech. Program (CJ20179023). The authors would especially like to thank Prof. Reuven Gordon from University of Victoria for his guidance and support. The authors also thank Dr Yun Da from Nanjing University of Science and Technology for his helpful discussions and permission to use FDTD solutions.
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Su, W., Chen, K., Yi, T. et al. Suppressed transmission of light through single slit in gold film. Pramana - J Phys 91, 44 (2018). https://doi.org/10.1007/s12043-018-1607-0
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DOI: https://doi.org/10.1007/s12043-018-1607-0