Enhancing robustness of ghost imaging against environment noise via cross-correlation in time domain

• DOI: 10.1364/oe.439519
• Publication Date: 2021-09-07T17:30:09Z
• Authors: Dong Li; Ding Yang; Shuai Sun; Yue-Gang Li; Liang Jiang; Hui-Zu Lin; Wei-Tao Liu
• Keywords: 0103 physical sciences; 01 natural sciences

Research towards practical applications of ghost imaging attracts more and more attention in recent years. Signal-to-noise ratio (SNR) of bucket results thus quality of images can be greatly affected by environmental noise, such as strong background light. We introduce temporal cross-correlation into typical ghost imaging to improve SNR of bucket value, taking temporal profile of illumination pulses as a prior information. Experimental results at sunny noontime verified our method, with the imaging quality greatly improved for the object at a distance of 1.3km. We also show the possibility of 3-dimensional imaging, experimentally.