Date: Jan. 7, 2021

Source: Institute of Photonics Technology

The journal Nature Communications has published a paper by the overseas innovation team of JNU’s Institute of Photonics Technology titled “π-phase modulated monolayer supercritical lens.”

Qin Fei, an associate researcher in the institute, and Boqing Liu, a doctoral candidate at Australian National University, are the first authors. Li Xiangping, a researcher in the institute, and Prof. Yuerui Lu of Australian National University are the corresponding authors. JNU is the first supporter of the research.

In conventional optical elements, the loss property of materials can reduce system performance, so it is necessary to eliminate the effect of loss in actual optical design. The research team found the loss-assisted phase singularity effect near the critical coupling point of an optical system. By using the loss-assisted phase regulation mechanism, the team realized the efficient phase regulation of visible light on 2D materials with atomic thicknesses, and demonstrated the planar supercritical lens approaching the physical thickness limit of the material and its far-field sub-diffraction-limited focusing property.

Qin’s research involves sub-diffraction-limited focusing by planar meta-lenses and super-resolution optical imaging technology application. He has published more than 40 papers in SCI journals including Nature Nanotechnology, Science Advances, Nature Communications and Advanced Materials, with over 2,100 total citations. His research team has been selected as an introduced innovative research and development team under the Pearl River Talent Recruitment Program. Qin heads many projects, including those of the Natural Science Foundation of Guangdong Province for Distinguished Young Scholars, the General Program and Youth Program of National Natural Science Foundation of China, and Science and Technology Plan Program of Guangzhou.

Link to paper: https://doi.org/10.1038/s41467-020-20278-x