Open AccessAtmospheric CO2 sensing using Scheimpflug-lidar based on a 157-µm fiber source
Author(s) -
Jim Larsson,
Joakim Bood,
Can Xu,
Yang Xiong,
Robert Lindberg,
Fredrik Laurell,
Mikkel Brydegaard
Publication year - 2019
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.27.017348
Subject(s) - lidar , optics , laser , materials science , remote sensing , scheimpflug principle , environmental science , physics , geology , cornea
A molecular laser-radar system, based on the Scheimpflug principle, has been constructed and demonstrated for remote sensing of atmospheric CO 2 concentrations using Differential Absorption Lidar (DIAL) in the (30012←00001) absorption band. The laser source is a Continues Wave (CW) Distributed-FeedBack (DFB) diode laser seeding an Erbium-doped fiber amplifier, emitting narrowband (3 MHz) tunable radiation with an output power of 1.3 W at 1.57 µm. The laser beam is expanded and transmitted to the atmosphere. The atmospheric backscattered signal is collected with a Newtonian telescope and detected with a linear InGaAs array detector satisfying the Scheimpflug condition. We present range-resolved measurements of atmospheric CO 2 concentration from a test range of 2 km located in the city of Lund, Sweden. We discuss and provide scalable results for CO 2 profiling with the Scheimpflug-lidar method.