Spatiotemporally resolved spectra of gaseous discharge between electrodes triggered by femtosecond laser filamentation
(2022) In Applied Physics B: Lasers and Optics 128(10).- Abstract
Atmospheric pressure discharge plasma is widely utilized in industry and science. However, due to the spatiotemporal uncertainty of the natural discharge, it is difficult to measure the discharge plasma spectra with a high spatiotemporal resolution. This prevents the accurate investigation of discharge plasma evolution and limits further applications. Here, we harnessed a femtosecond laser filament to trigger and guide a high-voltage discharge, i.e., the discharge plasma channel is rigorously controlled by the filament in both space and time. Therefore, the spectra of the plasma channel with a high spatiotemporal resolution could be measured using an imaging spectrometer. The spectra of the whole process of femtosecond laser... (More)
Atmospheric pressure discharge plasma is widely utilized in industry and science. However, due to the spatiotemporal uncertainty of the natural discharge, it is difficult to measure the discharge plasma spectra with a high spatiotemporal resolution. This prevents the accurate investigation of discharge plasma evolution and limits further applications. Here, we harnessed a femtosecond laser filament to trigger and guide a high-voltage discharge, i.e., the discharge plasma channel is rigorously controlled by the filament in both space and time. Therefore, the spectra of the plasma channel with a high spatiotemporal resolution could be measured using an imaging spectrometer. The spectra of the whole process of femtosecond laser filament-triggered discharge plasma are thoroughly studied. According to the spectral emission features, the whole process is divided into three stages: femtosecond laser filamentation, streamer propagation, and discharge. The spectral emissions at different stages can be utilized as required according to the spectral emission features. Based on the spatiotemporally resolved spectra of the streamer, the streamer propagation velocity is calculated to be about 3 × 105 m/s. In addition, atomic emissions from a discharge plasma triggered by femtosecond laser filament can be used for one-dimensional component measurements of flow fields.
(Less)
- author
- Gao, Qiang LU ; Zhu, Zhifeng ; Li, Bo LU ; Han, Lei and Li, Zhongshan LU
- organization
- publishing date
- 2022-10
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Applied Physics B: Lasers and Optics
- volume
- 128
- issue
- 10
- article number
- 184
- pages
- 10 pages
- publisher
- Springer
- external identifiers
-
- scopus:85138157413
- ISSN
- 0946-2171
- DOI
- 10.1007/s00340-022-07907-7
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
- id
- ca64c79a-012b-4e8f-80a9-1b06977c33b6
- date added to LUP
- 2022-10-14 08:58:02
- date last changed
- 2023-11-21 12:10:43
@article{ca64c79a-012b-4e8f-80a9-1b06977c33b6,
abstract = {{<p>Atmospheric pressure discharge plasma is widely utilized in industry and science. However, due to the spatiotemporal uncertainty of the natural discharge, it is difficult to measure the discharge plasma spectra with a high spatiotemporal resolution. This prevents the accurate investigation of discharge plasma evolution and limits further applications. Here, we harnessed a femtosecond laser filament to trigger and guide a high-voltage discharge, i.e., the discharge plasma channel is rigorously controlled by the filament in both space and time. Therefore, the spectra of the plasma channel with a high spatiotemporal resolution could be measured using an imaging spectrometer. The spectra of the whole process of femtosecond laser filament-triggered discharge plasma are thoroughly studied. According to the spectral emission features, the whole process is divided into three stages: femtosecond laser filamentation, streamer propagation, and discharge. The spectral emissions at different stages can be utilized as required according to the spectral emission features. Based on the spatiotemporally resolved spectra of the streamer, the streamer propagation velocity is calculated to be about 3 × 10<sup>5</sup> m/s. In addition, atomic emissions from a discharge plasma triggered by femtosecond laser filament can be used for one-dimensional component measurements of flow fields.</p>}},
author = {{Gao, Qiang and Zhu, Zhifeng and Li, Bo and Han, Lei and Li, Zhongshan}},
issn = {{0946-2171}},
language = {{eng}},
number = {{10}},
publisher = {{Springer}},
series = {{Applied Physics B: Lasers and Optics}},
title = {{Spatiotemporally resolved spectra of gaseous discharge between electrodes triggered by femtosecond laser filamentation}},
url = {{http://dx.doi.org/10.1007/s00340-022-07907-7}},
doi = {{10.1007/s00340-022-07907-7}},
volume = {{128}},
year = {{2022}},
}