High-Energy Nd :YAG Laser Technology Based on Dust-Cloud Pyrotechnic Pumping

To overcome the low efficiency of traditional pyrotechnic solid-state laser energy conversion, we design a dust cloud pyrotechnic-pumped Nd :YAG laser based on the thermal radiation model and Lambert–Beer law, which effectively addresses the issue of self-absorption during the combustion of traditional pyrotechnic compositions. Therefore, the laser output energy increases significantly. A laser energy of 2.15 J with a pulse width of 50 ms is achieved using 150 mg KClO₄/Zr/Al in this work. The energy-to-mass ratio reaches 14.34 J/g. Compared with the traditional pyrotechnic solid-state laser, the Nd :YAG laser pumped by a dust cloud showed a lower light threshold, higher energy efficiency, higher saturation limit, and better safety. In this work, we presents a novel and feasible solution for the development of compact and safe high-energy lasers.