The Relevance of Hanle Effect on Na and Fe Lidars
A laser resonant scattering process involves two steps, excitation and emission. That emission occurs spontaneously is well accepted. That the atoms involved in the emission are excited coherently by a laser beam leading to a non-isotropic angular distribution of emission (an antenna pattern) is not...
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2020-01-01
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doaj-f6075decadaa46ca9247ec880dcec00d2021-08-02T13:30:44ZengEDP SciencesEPJ Web of Conferences2100-014X2020-01-012370400810.1051/epjconf/202023704008epjconf_ilrc292020_04008The Relevance of Hanle Effect on Na and Fe LidarsShe Chiao-Yao (Joe)0Physics Department, Colorado State UniversityA laser resonant scattering process involves two steps, excitation and emission. That emission occurs spontaneously is well accepted. That the atoms involved in the emission are excited coherently by a laser beam leading to a non-isotropic angular distribution of emission (an antenna pattern) is not well known. The difference between coherent and incoherent excitation leads to the Hanle effect. In this paper, I discuss the physics of Hanle effect, and its influences on the backward scattering intensity of Na, K, and Fe atomic transitions and the associated Na and Fe resonant fluorescence lidar systems.https://www.epj-conferences.org/articles/epjconf/pdf/2020/13/epjconf_ilrc292020_04008.pdf |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
She Chiao-Yao (Joe) |
spellingShingle |
She Chiao-Yao (Joe) The Relevance of Hanle Effect on Na and Fe Lidars EPJ Web of Conferences |
author_facet |
She Chiao-Yao (Joe) |
author_sort |
She Chiao-Yao (Joe) |
title |
The Relevance of Hanle Effect on Na and Fe Lidars |
title_short |
The Relevance of Hanle Effect on Na and Fe Lidars |
title_full |
The Relevance of Hanle Effect on Na and Fe Lidars |
title_fullStr |
The Relevance of Hanle Effect on Na and Fe Lidars |
title_full_unstemmed |
The Relevance of Hanle Effect on Na and Fe Lidars |
title_sort |
relevance of hanle effect on na and fe lidars |
publisher |
EDP Sciences |
series |
EPJ Web of Conferences |
issn |
2100-014X |
publishDate |
2020-01-01 |
description |
A laser resonant scattering process involves two steps, excitation and emission. That emission occurs spontaneously is well accepted. That the atoms involved in the emission are excited coherently by a laser beam leading to a non-isotropic angular distribution of emission (an antenna pattern) is not well known. The difference between coherent and incoherent excitation leads to the Hanle effect. In this paper, I discuss the physics of Hanle effect, and its influences on the backward scattering intensity of Na, K, and Fe atomic transitions and the associated Na and Fe resonant fluorescence lidar systems. |
url |
https://www.epj-conferences.org/articles/epjconf/pdf/2020/13/epjconf_ilrc292020_04008.pdf |
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AT shechiaoyaojoe therelevanceofhanleeffectonnaandfelidars AT shechiaoyaojoe relevanceofhanleeffectonnaandfelidars |
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