Abstract
We study the far-infrared absorption properties of a thin GaAs film on Au. We show that a 1.2-μm GaAs film on Au can completely absorb an electromagnetic wave of 7.9 THz and totally reflect the waves of frequencies not very close to 7.9 THz. The uniformity of the layered structure enables observation of a quasi-monochromatic, nearly perfect absorption of 96% in a 1.4-μm GaAs film. The absorption can be high for a wide range of incident angles.
© 2015 Optical Society of America
Full Article | PDF ArticleMore Like This
Federico Lora Gonzalez and Michael J. Gordon
Opt. Lett. 40(7) 1512-1515 (2015)
Jihua Zhang, Ran Wei, Mohamed ElKabbash, E. Michael Campbell, and Chunlei Guo
Opt. Lett. 45(10) 2800-2803 (2020)
Huixu Deng, Zhigang Li, Liliana Stan, Daniel Rosenmann, David Czaplewski, Jie Gao, and Xiaodong Yang
Opt. Lett. 40(11) 2592-2595 (2015)