Consequences of femtosecond laser filament generation conditions in standoff laser induced breakdown spectroscopy

S. S. Harilal; J. Yeak; B. E. Brumfield; M. C. Phillips

doi:10.1364/OE.24.017941

Consequences of femtosecond laser filament generation conditions in standoff laser induced breakdown spectroscopy

S. S. Harilal, J. Yeak, B. E. Brumfield, M. C. Phillips

Research output: Contribution to journal › Article › peer-review

47 Scopus citations

Abstract

The combination of femtosecond laser filament ablation and emission spectroscopy is a potential analytical tool for standoff characterization of samples of interest. We compare the emission features and physical conditions of plasmas generated from metal targets using either by loosely focused femtosecond filaments or by lens-free filaments. Our results show that the filament generation conditions influence the plasma properties appreciably which include the atomic and molecular emission features, persistence and plasma fundamentals (temperature and density). The loosely focused fs pulse filaments are found to generate ablation plumes with higher temperature and density along with increased persistence compared to plumes generated by lens-free filaments.

Original language	English (US)
Pages (from-to)	17941-17949
Number of pages	9
Journal	Optics Express
Volume	24
Issue number	16
DOIs	https://doi.org/10.1364/OE.24.017941
State	Published - Aug 8 2016
Externally published	Yes

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1364/OE.24.017941

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title = "Consequences of femtosecond laser filament generation conditions in standoff laser induced breakdown spectroscopy",

abstract = "The combination of femtosecond laser filament ablation and emission spectroscopy is a potential analytical tool for standoff characterization of samples of interest. We compare the emission features and physical conditions of plasmas generated from metal targets using either by loosely focused femtosecond filaments or by lens-free filaments. Our results show that the filament generation conditions influence the plasma properties appreciably which include the atomic and molecular emission features, persistence and plasma fundamentals (temperature and density). The loosely focused fs pulse filaments are found to generate ablation plumes with higher temperature and density along with increased persistence compared to plumes generated by lens-free filaments.",

author = "Harilal, {S. S.} and J. Yeak and Brumfield, {B. E.} and Phillips, {M. C.}",

note = "Funding Information: This work was supported by DOE/NNSA Office of Nonproliferation and Verification Research and Development (NA-22). Pacific Northwest National Laboratory is operated for the U.S. Department of Energy by the Battelle Memorial Institute under Contract No. DE- AC05-76RLO1830. Publisher Copyright: {\textcopyright} 2016 Optical Society of America.",

year = "2016",

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doi = "10.1364/OE.24.017941",

language = "English (US)",

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T1 - Consequences of femtosecond laser filament generation conditions in standoff laser induced breakdown spectroscopy

AU - Harilal, S. S.

AU - Yeak, J.

AU - Brumfield, B. E.

AU - Phillips, M. C.

N1 - Funding Information: This work was supported by DOE/NNSA Office of Nonproliferation and Verification Research and Development (NA-22). Pacific Northwest National Laboratory is operated for the U.S. Department of Energy by the Battelle Memorial Institute under Contract No. DE- AC05-76RLO1830. Publisher Copyright: © 2016 Optical Society of America.

PY - 2016/8/8

Y1 - 2016/8/8

N2 - The combination of femtosecond laser filament ablation and emission spectroscopy is a potential analytical tool for standoff characterization of samples of interest. We compare the emission features and physical conditions of plasmas generated from metal targets using either by loosely focused femtosecond filaments or by lens-free filaments. Our results show that the filament generation conditions influence the plasma properties appreciably which include the atomic and molecular emission features, persistence and plasma fundamentals (temperature and density). The loosely focused fs pulse filaments are found to generate ablation plumes with higher temperature and density along with increased persistence compared to plumes generated by lens-free filaments.

AB - The combination of femtosecond laser filament ablation and emission spectroscopy is a potential analytical tool for standoff characterization of samples of interest. We compare the emission features and physical conditions of plasmas generated from metal targets using either by loosely focused femtosecond filaments or by lens-free filaments. Our results show that the filament generation conditions influence the plasma properties appreciably which include the atomic and molecular emission features, persistence and plasma fundamentals (temperature and density). The loosely focused fs pulse filaments are found to generate ablation plumes with higher temperature and density along with increased persistence compared to plumes generated by lens-free filaments.

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Consequences of femtosecond laser filament generation conditions in standoff laser induced breakdown spectroscopy

Abstract

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