CLEO 2019, San Jose, California, USA
May 10 - 15, 2019 (Mon. - Fri.), San Jose Convention Centor
Terahertz Single-Pixel Imaging System with Electrically Tunable Metamaterial Spatial Light Modulator
Wonwoo Lee, Hyunseung Jung, Hyunwoo Jo, Moon Sung Kang, and Hojin Lee
Abstract
Due to its penetrability and straightness of terahertz wave, terahertz imaging system has been extensively studied for real-time, high-resolution and accurate imaging systems. However, these imaging systems require high power sources or expensive and complex detectors and usually take a long time to acquire a single image. To overcome the limitations mentioned before, a single-pixel imaging system that had been used in optical imaging technique has been introduced into the terahertz range. In particular, through a single-pixel imaging system, it is possible to construct a terahertz imaging system using only a lamp and a bolometer detector instead of telescopic systems consisting of hundreds of terahertz parts, which gives great possibility for commercialization. In this work, we present electrically tunable terahertz spatial light modulator (SLM) based on ion-gel gating graphene metamaterials. From experimental results, we confirmed that the terahertz image could be successfully reconstructed corresponding to 93 % with the real object image at maximum.
