Previous studies have demonstrated the refraction-type liquid crystal (LC)-based beam-steering devices within the visible wavelength range. However, these devices require substantial improvements in a steering angle for practical application. In this study, we first demonstrate that our device operates as a beam-steering device regardless of the wavelength of an incident laser beam. Furthermore, the steering angle can be improved by increasing the refractive index gradient and stacking four cells, increasing the steering angle by 10-fold.
机构:
Shenzhen Univ, Coll Elect Sci & Technol, Shenzhen 518060, Peoples R ChinaShenzhen Univ, Coll Elect Sci & Technol, Shenzhen 518060, Peoples R China
Ge, Lei
Luk, Kwai Man
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机构:
City Univ Hong Kong, State Key Lab Millimeter Waves, Hong Kong, Hong Kong, Peoples R ChinaShenzhen Univ, Coll Elect Sci & Technol, Shenzhen 518060, Peoples R China