[19a-211B-1~8] 4.1 Plasmonics and Nanophotonics

▲ [19a-211B-7] Metalens for structured light

〇(D)Mu Ku Chen¹, Cheng Hung Chu², Hsin Yu Kuo¹, Yu Han Chen¹, Ren Jie Lin¹, Tsung Lin Chung¹, Yi-Teng Huang¹, Jia-Wern Chen¹, Din Ping Tsai^1,2 (1.National Taiwan Univ., 2.Academia Sinica)

Keywords:metalens, structured light, achromatic

We demonstrate a GaN metalens array which can be regarded as a light shaping generator for the structured light generation. The metalens array consists of 60 x 60 metalenses which can project a 42 cm x 42 cm light spots area at the distance of 1.5 M. The distance can be estimated by identifying the deformation of light spot distribution. The advantages of this metadevice is light weight, small, ultrathin, durable and easy to compact with other devices. Our design provides a new avenue for the structured light applications such as distance sensing and 3D environmental construction.