Polarization-dependent optical Stark effect on Fraunhofer-type absorption in DP LIBS

被引：1
|
作者：
Nagli, L. [1 ]
Gaft, M. [1 ]
Raichlin, Y. [1 ]
机构：
[1] Ariel Univ, Phys Dept, Ariel, 40700, Israel
来源：
SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY | 2024年 / 214卷
关键词：
Optical stark effect; Laser -induced breakdown spectroscopy; Fraunhofer-type absorption; Polarization; INDUCED BREAKDOWN SPECTROSCOPY; LASER-INDUCED PLASMAS; ELEMENTAL ANALYSIS; EMISSION; LINES;
D O I：
10.1016/j.sab.2024.106886
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
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.
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页数：6
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