Abstract
A Method Employing an Integrated Femtosecond (Fs) and Nanosecond (Ns) Dual-Laser System Was Developed to Generate Plasma with Desired Radical Species from Gas Mixtures Via a Fs Laser Pulse and Then to Excite Selected Radical Species to Higher Electronic States using a Wavelength-Tunable Ns Laser Pulse. an Optical Spectrometer Was Used to Measure the Emission Spectra and Identify the Transition from the Excited Electronic State to the Ground State. the Proposed Technique Has Been Demonstrated for an N2-CO2 Mixture with Various Time Delays between the Two Fs and Ns Pulses. the Results Have Indicated that the Population of Selected Radical Species at the Excited Electronic State Can Be Increased using the Subsequent Ns Laser Pulse, Which Also Enhances the Intensity of Emission Spectra Allowing Better Identifications of the Radical Species. This Technique Holds a Promise of Detection and Identification of Signature Plasma Species, Particularly for Trace Elements and Long-Distance Standoff Detections. © 2014 Society for Applied Spectroscopy.
Recommended Citation
C. H. Lin et al., "Femtosecond and Nanosecond Dual-Laser Optical Emission Spectroscopy of Gas Mixtures," Applied Spectroscopy, vol. 68, no. 2, pp. 222 - 225, SAGE Publications; Optica, Feb 2014.
The definitive version is available at https://doi.org/10.1366/13-07237
Department(s)
Mechanical and Aerospace Engineering
International Standard Serial Number (ISSN)
1943-3530; 0003-7028
Document Type
Article - Journal
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2023 SAGE Publications; Optica, All rights reserved.
Publication Date
01 Feb 2014
