Optimizing gated detection in high-jitter kilohertz powerchip laser-induced breakdown spectroscopy

Surface characterization of carbon fiber reinforced polymers by picosecond laser induced breakdown spectroscopy

“…The SNR varies for different gate delays and laser pulse energies. The plasma plume characteristics influence the optimum gate delay required to maximize the SNR [15,22]. An untreated, unintentionally contaminated CFRP was tested to examine the SNR of C I at 247.9 nm and Si I at 288.2 nm as a function of the gate delay.…”

Assessment of a low-energy high repetition rate DPSS laser for quantitative analysis of marine ferromanganese nodules by LIBS

“…6 that the SNR and SBR quickly dropped to zero and plasma decay time was about 500 ns at a repetition rate of 500 Hz. Previous kinetic investigations on plasma produced by an LE HRR DPSS laser on different types of samples (aluminium alloys, 40,42 steel, 43 air, 44 explosives, 45 and pure metals 46 ) showed that both intensity and plasma parameters were decayed up to several hundreds of nanoseconds. This is due to the low energy pumping in each plasma in comparison with the high energy mode (more than 1-10 mJ per pulse).…”

Compact diode-pumped Nd:YAG laser for remote analysis of low-alloy steels by laser-induced breakdown spectroscopy

“…Such a system must quantitatively analyze light elements from a distance of 400 mm. A powerchip Nd:YAG laser is a perspective and most lightweight solution for a number of LIBS applications; [20][21][22][23] however, such lasers provide a few hundred mJ pulses, which is not enough in our case. Recently, powerful ber lasers have been recognized as perspective tools for LIBS.…”