Laser-induced breakdown spectroscopy (LIBS) has emerged as a powerful analytical technique for the qualitative and quantitative elemental analysis of any sample in any form such as solid, liquid, or gas. The experimental simplicity, in situ analysis, nondestructive, and non-preparation of the sample have made it a preferred and accessible experimental technique. However, to improve its sensitivity for qualitative and quantitative analysis, several experimental techniques have been developed that enhance the LIBS signal intensities such as the dual-laser pulse technique, resonance-enhanced LIBS, sample heating, application of electric or magnetic fields, microwave discharge technique, etc. In this chapter, we will present some details of these experimental techniques to improve the signal intensities, limit of detection, and LIBS-based experiments.