Upconversion-based lidar measurements of atmospheric CO2

Optics Express
Lasse HøgstedtPeter Tidemand-Lichtenberg

Abstract

For the first time an upconversion based detection scheme is demonstrated for lidar measurements of atmospheric CO2-concentrations, with a hard target at a range of 3 km and atmospheric backscatter from a range of ~450 m. The pulsed signals at 1572 nm are upconverted to 635 nm, and detected by a photomultiplier tube, to test how the upconversion technology performs in a long range detection system. The upconversion approach is compared to an existing direct detection scheme using a near-IR detector with respect to signal-to-noise ratio and quantum efficiency. It is for the first time analyzed how the field-of-view of a receiver system, for long range detection, depends critically on the parameters for the nonlinear up-conversion process, and how to optimize these parameters in future systems.

Citations

Oct 19, 2017·Optics Express·Sebastian WolfFrank Kühnemann
Apr 1, 2020·Applied Optics·Max WidarssonFredrik Laurell
Feb 25, 2018·Optics Express·Lichun MengPeter John Rodrigo
May 29, 2018·Optics Express·Romain DemurClaude Fabre
May 16, 2017·Nature Communications·M MancinelliL Pavesi

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