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Polarization-dependent optical Stark effect on Fraunhofer-type absorption in DP LIBS.
- Source :
-
Spectrochimica Acta Part B . Apr2024, Vol. 214, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
-
Abstract
- Polarization, broadening, and splitting in Fraunhofer-type absorption (FTA) spectra are observed in colinear Double-Pulse Lase-Induced Breakdown Spectroscopy (DP LIBS). Effects are attributable to the Optical Stark Effect (OSE) induced by the electric field of the second laser pulse within the first pulse-created plasma. This effect manifests exclusively in back-directed Laser-Induced Plasma (LIP) emission and during the presence of the second laser pulse. Notably, the OSE is absent in LIBS observations orthogonal to the direction of the laser beams. [Display omitted] • Some Fraunhofer-type absorption lines are polarized in the Double Pulse Laser-induced breakdown spectroscopy in back-directed laser-induced plasma emission geometry. • Polarization in Fraunhofer-type absorption is attributed to the Optical Stark effect induced by the electric field generated by the focused second laser beam. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 05848547
- Volume :
- 214
- Database :
- Academic Search Index
- Journal :
- Spectrochimica Acta Part B
- Publication Type :
- Academic Journal
- Accession number :
- 176407123
- Full Text :
- https://doi.org/10.1016/j.sab.2024.106886