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Title: Dual-comb spectroscopy of laser-induced plasmas

Abstract

Dual-comb spectroscopy has become a powerful spectroscopic technique in applications that rely on its broad spectral coverage combined with high frequency resolution capabilities. Experiments to date have primarily focused on detection and analysis of multiple gas species under semi-static conditions, with applications ranging from environmental monitoring of greenhouse gases to high resolution molecular spectroscopy. Here, we utilize dual-comb spectroscopy to demonstrate broadband, high-resolution, and time-resolved measurements in a laser induced plasma for the first time. As a first demonstration, we simultaneously detect trace amounts of Rb and K in solid samples with a single laser ablation shot, with transitions separated by over 6 THz (13 nm) and spectral resolution sufficient to resolve isotopic and ground state hyperfine splittings of the Rb D2 line. This new spectroscopic approach offers the broad spectral coverage found in the powerful techniques of laser-induced breakdown spectroscopy (LIBS) while providing the high-resolution and accuracy of cw laser-based spectroscopies.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1438977
Report Number(s):
PNNL-SA-132479
Journal ID: ISSN 2041-1723; DN2001000
DOE Contract Number:  
AC05-76RL01830
Resource Type:
Journal Article
Resource Relation:
Journal Name: Nature Communications; Journal Volume: 9; Journal Issue: 1
Country of Publication:
United States
Language:
English
Subject:
(140.3440) Laser-induced breakdown; (280.4788) Optical Sensing; (280.5395) Plasma Diagnostics; (020.3260) Isotope shifts; Frequency comb; laser absorption spectroscopy

Citation Formats

Bergevin, Jenna, Wu, Tsung-Han, Yeak, Jeremy, Brumfield, Brian E., Harilal, Sivanandan S., Phillips, Mark C., and Jones, R. Jason. Dual-comb spectroscopy of laser-induced plasmas. United States: N. p., 2018. Web. doi:10.1038/s41467-018-03703-0.
Bergevin, Jenna, Wu, Tsung-Han, Yeak, Jeremy, Brumfield, Brian E., Harilal, Sivanandan S., Phillips, Mark C., & Jones, R. Jason. Dual-comb spectroscopy of laser-induced plasmas. United States. doi:10.1038/s41467-018-03703-0.
Bergevin, Jenna, Wu, Tsung-Han, Yeak, Jeremy, Brumfield, Brian E., Harilal, Sivanandan S., Phillips, Mark C., and Jones, R. Jason. Wed . "Dual-comb spectroscopy of laser-induced plasmas". United States. doi:10.1038/s41467-018-03703-0.
@article{osti_1438977,
title = {Dual-comb spectroscopy of laser-induced plasmas},
author = {Bergevin, Jenna and Wu, Tsung-Han and Yeak, Jeremy and Brumfield, Brian E. and Harilal, Sivanandan S. and Phillips, Mark C. and Jones, R. Jason},
abstractNote = {Dual-comb spectroscopy has become a powerful spectroscopic technique in applications that rely on its broad spectral coverage combined with high frequency resolution capabilities. Experiments to date have primarily focused on detection and analysis of multiple gas species under semi-static conditions, with applications ranging from environmental monitoring of greenhouse gases to high resolution molecular spectroscopy. Here, we utilize dual-comb spectroscopy to demonstrate broadband, high-resolution, and time-resolved measurements in a laser induced plasma for the first time. As a first demonstration, we simultaneously detect trace amounts of Rb and K in solid samples with a single laser ablation shot, with transitions separated by over 6 THz (13 nm) and spectral resolution sufficient to resolve isotopic and ground state hyperfine splittings of the Rb D2 line. This new spectroscopic approach offers the broad spectral coverage found in the powerful techniques of laser-induced breakdown spectroscopy (LIBS) while providing the high-resolution and accuracy of cw laser-based spectroscopies.},
doi = {10.1038/s41467-018-03703-0},
journal = {Nature Communications},
number = 1,
volume = 9,
place = {United States},
year = {Wed Mar 28 00:00:00 EDT 2018},
month = {Wed Mar 28 00:00:00 EDT 2018}
}