In order to study the influence of high temperature environment on the firing property of laser pyrotechnics,the thermal field simulation model of laser pyrotechnics was established,and the optical test system was set up,to explore the laser spot size change of self-focusing lens of laser pyrotechnics under 100℃temperature condition.The simulation results show that there is a length deformation of 92.4 μm for the self-focusing lens under high temperature condition,which results in the laser spot size increasing from 94 μm to 150 μm;The test results show that the output laser spot of the tested laser pyrotechnic varies from 243 μm to 272 μm,the increase of self-focusing lens deformation leads to the decrease of stimulation power density of the laser pyrotechnics and the action time delay.The study indicates that the deformation of self-focusing lens under high temperature reduces the firing reliability of the laser pyrotechnics.
关键词
激光火工品/自聚焦透镜/激光光斑/发火可靠性/高温环境
Key words
Laser pyrotechnics/Self-focusing lens/Laser spot/Firing reliability/High temperature environment
维普
万方数据