| 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 | 01011 | |
| Number of page(s) | 3 | |
| Section | Joint CLRC/ILRC Session: New Lidar Technologies and Methods | |
| DOI | https://doi.org/10.1051/epjconf/202636201011 | |
| Published online | 09 April 2026 | |
https://doi.org/10.1051/epjconf/202636201011
Time Resolved Laser Excited Resonance Emission Spectra of SO2 for Development of Resonance Raman LIDAR
Shikoku Research Institute Inc. 2109-8 Yashima-nishimachi, Takamatsu-shi, Kagawa-ken 761-0192, Japan This email address is being protected from spambots. You need JavaScript enabled to view it.
Published online: 9 April 2026
Abstract
Ns-scale time resolved laser excited resonance emission spectra of sulfur dioxide (SO2) gas were acquired in two different deep UV wavelength regions. Both wavelength regions are in electronic resonance of SO2 molecule but the temporal responses of the two emission spectra were different in ns time scale. When excited at 220.56 nm, the emission spectra were observed at almost the same time as the excitation laser and we conclude that the spectra were resonance Raman scattering. On the other hand, when excited at 279.60 nm, the emission spectra were observed approximately 5 ns after the excitation laser and we conclude that the spectra were resonance fluorescence. 5 ns difference in time is equivalent to 75 cm in distance measurement of ToF LIDAR, which is not negligible in short range or precision-needed situations.
© The Authors, published by EDP Sciences, 2026
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.