Large-area pixelated metasurface beam deflector on a 12-inch glass wafer for random point generation

Large-area pixelated metasurface beam deflector on a 12-inch glass wafer for random point generation

Nanophotonics

10.1515/nanoph-2019-0208

https://doi.org/10.1515/nanoph-2019-0208

Nanxi Li, Yuan Hsing Fu, Yuan Dong, Ting Hu, Zhengji Xu, Qize Zhong, Dongdong Li, Keng Heng Lai, Shiyang Zhu, Qunying Lin, Yuandong Gu, Navab Singh

large area, metasurface, glass wafer, optical deflector.

17 September 2019

Li, N., Fu, Y., Dong, Y., Hu, T., Xu, Z., Zhong, Q., Li, D., Lai, K., Zhu, S., Lin, Q., Gu, Y., & Singh, N. (2019). Large-area pixelated metasurface beam deflector on a 12-inch glass wafer for random point generation, Nanophotonics, 8(10), 1855-1861. doi: https://doi.org/10.1515/nanoph-2019-0208

Metasurface-based beam deflector, as an important optical element to bend the light propagation direction, has drawn a lot of interests in research to achieve miniaturization of devices and reduction of system complexity. Based on the 12-inch immersion lithography technology, in this work, an ultra-thin and large-area pixelated metasurface beam deflector with a footprint of 2500 × 2500 μm, formed by nanopillars with diameters from 221 to 396 nm, is demonstrated on a 12-inch glass wafer. The 21 × 21 array of deflectors is designed to bend the input light in different directions and to generate 441 random points. In addition, the layer transfer on the 12-inch glass wafer makes the device working in transmission mode at a 940-nm wavelength. The random point array generated from the experiment shows good match with the design. This pixelated metasurface beam deflector can generate random points simultaneously and has potential to make beam steering by switching each pixel of the beam deflector, which can be applied on motion detection, facial recognition, and light detection and ranging.

http://creativecommons.org/licenses/by/4.0/

RIE2020 Advanced Manufacturing and Engineering (AME) Domain’s Core Funds: SERC Strategic Funds (A1818g0028).

https://oar.a-star.edu.sg/communities-collections/articles/16244

2192-8614

Institute of Microelectronics