title: A flat spectral Faraday filter for sodium lidar.
abstract: We report a flat spectral Faraday anomalous dispersion optical filter (FS-FADOF) for sodium lidar. The physical and technical considerations for obtaining a FS-FADOF with a 3.5 GHz flat spectral transmission function are presented. It was found that the effective transmission of this filter was much higher (>94%) and more uniform than that of the ultranarrowband FADOF, and therefore were less sensitive to laser-frequency drift. Thus, the FS-FADOF can improve lidar efficiency and precision.
authors.affiliation: State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences-Wuhan National Laboratory for Optoelectronics Wuhan 430071, China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Yang
authors.forename: Xuewu
authors.initials: X
authors.lastname: Cheng
authors.forename: Faquan
authors.initials: F
authors.lastname: Li
authors.forename: Xiong
authors.initials: X
authors.lastname: Hu
authors.forename: Xin
authors.initials: X
authors.lastname: Lin
authors.forename: Shunsheng
authors.initials: S
authors.lastname: Gong