Vacuum UV Nonlinear Metalens

Ming-Lun Tseng^1*, Michael Semmlinger², Ming Zhang², Catherine Arndt², Din Ping Tsai³, Peter Nordlander², Naomi J. Halas²

¹Institute of Electronics, National Yang Ming Chiao Tung University, Hsinchu, Taiwan
²Department of Electrical and Computer Engineering, Rice University, Houston, USA
³Department of Electrical Engineering, City University of Hong Kon, Kowloon, Hong Kong

* Presenter:Ming-Lun Tseng, email:mltseng@nycu.edu.tw

Vacuum ultraviolet light is of great importance to many critical applications. However, advancing the relevant technologies has met serious challenges due to the strong absorption of matter. In this paper, by using metasurface photonics (metaphotonics), we realize a planar nanostructured lens for VUV light generation. The reported metasurface lens (metalens) consists of an array of dielectric nanoantennas that show strong optical responses to visible light. Generation and focus of VUV light via an artificially designed nonlinear process in the reported metalens are experimentally demonstrated. This work demonstrates a novel route toward advanced VUV devices and systems.

Keywords: Metalens, Nonlinear metasurface, UV