Open AccessTime-resolved resonance fluorescence spectroscopy for study of chemical reactions in laser-induced plasmas
Author(s) -
Lei Liu,
Leimin Deng,
Lisha Fan,
Xi Huang,
Yao Lu,
Xiaokang Shen,
Lan Jiang,
Jean François Silvain,
Yongfeng Lu
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.027000
Subject(s) - laser induced fluorescence , laser induced breakdown spectroscopy , spectroscopy , resonance fluorescence , laser , plasma , diatomic molecule , fluorescence spectroscopy , chemical reaction , triatomic molecule , time resolved spectroscopy , resonance (particle physics) , materials science , plasma diagnostics , analytical chemistry (journal) , fluorescence , chemistry , atomic physics , optics , molecule , organic chemistry , physics , quantum mechanics
Identification of chemical intermediates and study of chemical reaction pathways and mechanisms in laser-induced plasmas are important for laser-ablated applications. Laser-induced breakdown spectroscopy (LIBS), as a promising spectroscopic technique, is efficient for elemental analyses but can only provide limited information about chemical products in laser-induced plasmas. In this work, time-resolved resonance fluorescence spectroscopy was studied as a promising tool for the study of chemical reactions in laser-induced plasmas. Resonance fluorescence excitation of diatomic aluminum monoxide (AlO) and triatomic dialuminum monoxide (Al 2 O) was used to identify these chemical intermediates. Time-resolved fluorescence spectra of AlO and Al 2 O were used to observe the temporal evolution in laser-induced Al plasmas and to study their formation in the Al-O 2 chemistry in air.