Open AccessUsing FADOF to eliminate the background light influence in ghost imaging
Author(s) -
Longfei Yin,
Dasheng Qian,
Ziwei Geng,
Haodi Zhan,
Guohua Wu
Publication year - 2022
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.468274
Subject(s) - optics , ghost imaging , detector , physics , stray light , optical filter , optical imaging , light intensity , photodetector , background noise , noise (video) , light beam , spectral imaging , computer science , artificial intelligence , acoustics , image (mathematics)
The high solar background during the day adversely affects the long distance daytime operations of ghost imaging. It is extremely hard to distinguish the signal light from the background noise light after they are both converted to voltage or current signals by the bucket detector, so spectral filtering before the detector is quite important. In this work, a Faraday anomalous dispersion optical filter (FADOF) is used in eliminating the background light influence in ghost imaging. Results of lab experiment show that the background light noise tolerance of the ghost imaging with FADOF is at least 18 times bigger than that with a 10 nm optical filter. The method has simple structure, great performance and great algorithms compatibility.