Remote terahertz spectroscopy from extended two-color plasma filaments: The ALTESSE 2 project

Abderazek Talbi; Binbin Zhou; Peter Uhd Jepsen; S. Skupin; A.  Courjaud; L.  Berge

doi:10.1209/0295-5075/acdc4c

Remote terahertz spectroscopy from extended two-color plasma filaments: The ALTESSE 2 project

Abderazek Talbi, Binbin Zhou, Peter Uhd Jepsen, S. Skupin, A. Courjaud, L. Berge

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Abstract

Coherent time-domain spectroscopy (TDS) using terahertz radiation is valuable for fundamental science, security, and medical applications. This study investigates the performance of air-biased coherent detection terahertz spectroscopy (ABCD-THz) when an extended plasma filament is created in the air over long distances. We report on the latest results obtained within the follow-up of the ALTESSE project (Berge L. ´ et al., EPL, 126 (2019) 24001) whose objective is to measure a set of spectral signatures characterizing suspicious materials over meter-long distances. As one of the most critical steps towards routinely applying this technique, we verified the feasibility of a remote THz time-domain spectroscopy by loosely focusing two-color ultrashort laser pulses at more than 3 meters from the laser source. The absorption spectra of amino acids and explosives analyzed in such a filamentation geometry are compared with those obtained using a standard ABCD scheme where the plasma is generated at much shorter distances of ∼ 30 cm.

Original language	English
Article number	10001
Journal	Europhysics Letters
Volume	143
Number of pages	8
ISSN	0295-5075
DOIs	https://doi.org/10.1209/0295-5075/acdc4c
Publication status	Published - 2023

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title = "Remote terahertz spectroscopy from extended two-color plasma filaments: The ALTESSE 2 project",

abstract = "Coherent time-domain spectroscopy (TDS) using terahertz radiation is valuable for fundamental science, security, and medical applications. This study investigates the performance of air-biased coherent detection terahertz spectroscopy (ABCD-THz) when an extended plasma filament is created in the air over long distances. We report on the latest results obtained within the follow-up of the ALTESSE project (Berge L. ´ et al., EPL, 126 (2019) 24001) whose objective is to measure a set of spectral signatures characterizing suspicious materials over meter-long distances. As one of the most critical steps towards routinely applying this technique, we verified the feasibility of a remote THz time-domain spectroscopy by loosely focusing two-color ultrashort laser pulses at more than 3 meters from the laser source. The absorption spectra of amino acids and explosives analyzed in such a filamentation geometry are compared with those obtained using a standard ABCD scheme where the plasma is generated at much shorter distances of ∼ 30 cm.",

author = "Abderazek Talbi and Binbin Zhou and Jepsen, {Peter Uhd} and S. Skupin and A. Courjaud and L. Berge",

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T1 - Remote terahertz spectroscopy from extended two-color plasma filaments: The ALTESSE 2 project

AU - Talbi, Abderazek

AU - Zhou, Binbin

AU - Jepsen, Peter Uhd

AU - Skupin, S.

AU - Courjaud, A.

AU - Berge, L.

PY - 2023

Y1 - 2023

N2 - Coherent time-domain spectroscopy (TDS) using terahertz radiation is valuable for fundamental science, security, and medical applications. This study investigates the performance of air-biased coherent detection terahertz spectroscopy (ABCD-THz) when an extended plasma filament is created in the air over long distances. We report on the latest results obtained within the follow-up of the ALTESSE project (Berge L. ´ et al., EPL, 126 (2019) 24001) whose objective is to measure a set of spectral signatures characterizing suspicious materials over meter-long distances. As one of the most critical steps towards routinely applying this technique, we verified the feasibility of a remote THz time-domain spectroscopy by loosely focusing two-color ultrashort laser pulses at more than 3 meters from the laser source. The absorption spectra of amino acids and explosives analyzed in such a filamentation geometry are compared with those obtained using a standard ABCD scheme where the plasma is generated at much shorter distances of ∼ 30 cm.

AB - Coherent time-domain spectroscopy (TDS) using terahertz radiation is valuable for fundamental science, security, and medical applications. This study investigates the performance of air-biased coherent detection terahertz spectroscopy (ABCD-THz) when an extended plasma filament is created in the air over long distances. We report on the latest results obtained within the follow-up of the ALTESSE project (Berge L. ´ et al., EPL, 126 (2019) 24001) whose objective is to measure a set of spectral signatures characterizing suspicious materials over meter-long distances. As one of the most critical steps towards routinely applying this technique, we verified the feasibility of a remote THz time-domain spectroscopy by loosely focusing two-color ultrashort laser pulses at more than 3 meters from the laser source. The absorption spectra of amino acids and explosives analyzed in such a filamentation geometry are compared with those obtained using a standard ABCD scheme where the plasma is generated at much shorter distances of ∼ 30 cm.

U2 - 10.1209/0295-5075/acdc4c

DO - 10.1209/0295-5075/acdc4c

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VL - 143

JO - Europhysics Letters

JF - Europhysics Letters

M1 - 10001

ER -

Remote terahertz spectroscopy from extended two-color plasma filaments: The ALTESSE 2 project

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