Abstract

Laser-enhanced ionization can be used to interrogate the laser-generated plume. Relatively broad absorption spectral features due to the dense laser plumes have been studied by using two separate lasers to provide different vaporization and excitation conditions. By varying the time delay and the positions between the vaporization and excitation laser pulses, one can study the evolution of the laser-generated plumes. High sensitivity can be achieved even with the use of visible light for excitation.

Characteristics of plasma plume in ultrafast laser ablation with a weakly ionized air channel

Huaming Hou, Bo Yang, Xianglei Mao, Vassilia Zorba, Pengxu Ran, and Richard E. Russo
Opt. Express 26(10) 13425-13435 (2018)

Laser excitation and ionization of dense atomic vapors

T. B. Lucatorto and T. J. McIlrath
Appl. Opt. 19(23) 3948-3956 (1980)

High-resolution spectroscopy of laser ablation plumes using laser-induced fluorescence

S. S. Harilal, N. L. LaHaye, and M. C. Phillips
Opt. Express 25(3) 2312-2326 (2017)

Kinetic modeling of the laser-induced breakdown spectroscopy plume from metallic lead

Valeri I. Babushok, Frank C. DeLucia, Paul J. Dagdigian, Michael J. Nusca, and Andrzej W. Miziolek
Appl. Opt. 42(30) 5947-5962 (2003)

Laser-enhanced ionization detection of trace copper in high salt matrices

George J. Havrilla and Christopher C. Carter
Appl. Opt. 26(17) 3510-3515 (1987)