Laser-induced breakdown spectroscopy technology is a recent research hotspot that employs lasers as excitation sources for material composition analysis. This technology is extensively applied in industries such as energy, mining, chemical engineering, and analysis. This book introduces in detail the pioneering theory and application technology of self-absorption-free laser-induced breakdown spectroscopy, offering a valuable theoretical foundation and research methods to address the bottleneck issues in the application of laser-induced breakdown spectroscopy. The book is primarily targeted at researchers, scholars, graduate students, and senior undergraduate students in fields related to optics, electronic information technology, and physics.