2D visualization of hot gas based on a mid-infrared molecular Faraday imaging filter Wu, Kuijun ; Luo, Zhongjie ; Feng, Yutao ; Yu, Guangbao ; Liu, Linmei ; Xiong, Yuanhui ; Li, Faquan Abstract Publication: Optics Letters Pub Date: August 2018 DOI: 10.1364/OL.43.003686 Bibcode: 2018OptL...43.3686W