| Issue |
EPJ Web Conf.
Volume 362, 2026
31st International Laser Radar Conference (ILRC 31) Held Together with the 22nd Coherent Laser Radar Conference (CLRC 22)
|
|
|---|---|---|
| Article Number | 01017 | |
| Number of page(s) | 4 | |
| Section | Joint CLRC/ILRC Session: New Lidar Technologies and Methods | |
| DOI | https://doi.org/10.1051/epjconf/202636201017 | |
| Published online | 09 April 2026 | |
https://doi.org/10.1051/epjconf/202636201017
Multiwavelength interferometer-based HSRL
(a) Max Planck Institute for Meteorology Bundesstraße 53, 20146 Hamburg, Germany
(b) National Institute of Research and Development for Optoelectronics INOE 2000 Atomistilor Street 409, RO077125 Magurele, Romania
(c) University of Warsaw, Faculty of Physics L.Pasteura 5, 02-093 Warsaw, Poland
(d) National Observatory of Athens I. Metaxa & Vas. Pavlou St., Penteli, GR-15236, Greece This email address is being protected from spambots. You need JavaScript enabled to view it.
Published online: 9 April 2026
Abstract
We present a lab prototype of a high spectral resolution UV lidar channel dedicated to calibrate and validate EarthCare lidar. A solution with two Fabry-Pérot etalons combined in line is proposed to achieve high spectral purity in splitting aerosol and molecular backscatter returns. Targeted spectral purity predicted in a model for molecular signal has been achieved with the prototype version. Decoupling etalons by turning wave polarization confirmed to be successful. Compact design implementing pressure tuning solution to adjust etalon effective mirror spacing proved to be efficient. Illuminating etalon from “the back” with He:Ne laser light and monitoring interference fringe diameter demonstrated to be a feasible technique to control etalon alignment.
© The Authors, published by EDP Sciences, 2026
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