Laser-Induced Breakdown Spectroscopy (LIBS) and Laser-Induced Plasma Lasers (LIPL) in elongated Laser-Induced Plasma (LIP) are investigated. It is shown that LIBS and LIPL behavior versus ablation laser pulses are about the same, though LIBS emission is proportional to the atoms in excited states, but LIPL generation is proportional to the atoms in the ground state. Furthermore, two peaks are found in LIBS/LIPL intensities dependencies on laser pulses. The first peak is well-known in LIBS. The second, observed at large ablation pulses number (≥10⁴ pulses in our experimental conditions), may be attributed to the sample's thermal properties, especially thermal capacity and thermal diffusivity.

研究了拉长激光诱导等离子体 (LIP) 中的激光诱导击穿光谱 (LIBS) 和激光诱导等离子体激光器 (LIPL)。结果表明，LIBS 和 LIPL 行为与烧蚀激光脉冲的关系大致相同，虽然 LIBS 发射与处于激发态的原子成正比，但 LIPL 的产生与处于基态的原子成正比。此外，在 LIBS/LIPL 强度对激光脉冲的依赖性中发现了两个峰值。第一个峰在 LIBS 中是众所周知的。第二，在大消融脉冲数（在我们的实验条件下≥10 ⁴脉冲）下观察到的，可能归因于样品的热特性，尤其是热容量和热扩散率。