光学
光束转向
相控阵
材料科学
炸薯条
制作
波长
空间光调制器
硅上液晶
梁(结构)
光电子学
相控阵光学
光子学
计算机科学
物理
电信
液晶显示器
天线(收音机)
病理
医学
替代医学
作者
Min Chul Shin,Aseema Mohanty,K.A. Watson,Gaurang R. Bhatt,Christopher T. Phare,Steven A. Miller,Moshe Zadka,Brian S. Lee,Xingchen Ji,Ipshita Datta,Michal Lipson
出处
期刊:Optics Letters
[The Optical Society]
日期:2020-02-14
卷期号:45 (7): 1934-1934
被引量:117
摘要
Compact beam steering in the visible spectral range is required for a wide range of emerging applications, such as augmented and virtual reality displays, optical traps for quantum information processing, biological sensing, and stimulation. Optical phased arrays (OPAs) can shape and steer light to enable these applications with no moving parts on a compact chip. However, OPA demonstrations have been mainly limited to the near-infrared spectral range due to the fabrication and material challenges imposed by the shorter wavelengths. Here, we demonstrate the first chip-scale phased array operating at blue wavelengths (488 nm) using a high-confinement silicon nitride platform. We use a sparse aperiodic emitter layout to mitigate fabrication constraints at this short wavelength and achieve wide-angle beam steering over a 50° field of view with a full width at half-maximum beam size of 0.17°. Large-scale integration of this platform paves the way for fully reconfigurable chip-scale three-dimensional volumetric light projection across the entire visible range.
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