Abstract
The optical properties of ultrathin Au films on silicon have been studied in the infrared over a wide frequency range from 200 to . Thick films show a Drude behavior; i.e., with increasing frequency the transmission increases; for films below the percolation threshold at about a negative slope for the frequency-dependent transmission is observed. When the thickness is further reduced, between 1 and an anomaly occurs: the relative transmission reaches maximum values above 100% compared with the bare substrate, indicating an antireflection coating of nanometer thickness for light of wavelength. This anomaly can be explained in the framework of effective-medium theories.
© 2007 Optical Society of America
Full Article | PDF ArticleMore Like This
Guojin Feng, Yuan Li, Yu Wang, Ping Li, Jingtao Zhu, and Li Zhao
Opt. Lett. 37(3) 299-301 (2012)
Er-Tao Hu, Qing-Yuan Cai, Rong-Jun Zhang, Yan-Feng Wei, Wen-Chao Zhou, Song-You Wang, Yu-Xiang Zheng, Wei Wei, and Liang-Yao Chen
Opt. Lett. 41(21) 4907-4910 (2016)
Gopakumar Ramakrishnan and Paul C. M. Planken
Opt. Lett. 36(13) 2572-2574 (2011)