High-speed ghost imaging by an unpredictable optical phased array

被引:1
|
作者
Sun, Xuyang [1 ,2 ]
Chen, Hui [1 ,2 ]
Qiu, Bingni [1 ,2 ]
Wang, Gao [1 ,2 ]
Xu, Wanting [3 ]
Luo, Sheng [1 ,2 ]
Yuan, Yuan [1 ,2 ]
Chen, Bing [1 ,2 ]
Zheng, Huaibin [1 ,2 ]
He, Yuchen [1 ,2 ]
Xu, Zhuo [1 ,2 ]
机构
[1] Xi An Jiao Tong Univ, Elect Mat Res Lab, Key Lab Minist Educ, Xian, Peoples R China
[2] Xi An Jiao Tong Univ, Int Ctr Dielect Res, Xian, Peoples R China
[3] Xian Polytech Univ, Sch Sci, Xian, Peoples R China
来源
FRONTIERS IN PHYSICS | 2022年 / 10卷
基金
中国国家自然科学基金;
关键词
ghost imaging; optical phased array; high-speed imaging; naked-eye; speckle patterns; LIGHT;
D O I
10.3389/fphy.2022.1072482
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
Ghost imaging (GI) retrieves an image from the correlation between a sequence of illumination patterns on the object and their corresponding bucket detections. Traditionally, GI requires the precise information of the illumination patterns, which raises technology barriers on building a high-speed illumination source, limiting the scope of its application. In this study, we propose a high-speed GI system, which implements a self-correlation with a purely optical operation without determining illumination patterns. The light source is an optical phased array (OPA), built of a set of waveguide-type electro-optic phase modulators. The OPA is driven to randomly change the phases in every 200 ns, generating speckle patterns at a rate of 5 MHz. Although the speckle patterns are not predictable or post-determinable, with the help of the naked-eye GI scheme, the system in real time optically generates the images of the object at a frame rate of more than 1 kHz, which can be directly observed by eyes or using a camera. This method avoids acquiring the information of the illumination, thus providing a simple and easy way to realize high-speed GI. It also inspires a different way of applying OPAs to high-speed imaging.
引用
收藏
页数:8
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