CAJ | 학술논문

研制了一种快速退压式电光Q开关驱动器,它具有结构简单、稳定性好、体积小且成本低的优点。由基于PWM型集成控制器SG3525的升压型DC/DC开关电源提供0V至1500V的高压直流电平,稳定度在0.2%以内,纹波小于300mV;采用高压功率场效应管作为开关器件,获得了频率在1KHz至50KHz、高电平在0V至1200V可调、下降沿可达6ns的高压负脉冲;采用LiNbO3晶体作为电光晶体,运用于小功率Nd：YVO4激光器的电光调Q,工作在高电平为725V,频率为10KHz时,获得了脉宽约13ns的脉冲激光输出。
연제료일충쾌속퇴압식전광Q개관구동기,타구유결구간단、은정성호、체적소차성본저적우점。유기우PWM형집성공제기SG3525적승압형DC/DC개관전원제공0V지1500V적고압직류전평,은정도재0.2%이내,문파소우300mV;채용고압공솔장효응관작위개관기건,획득료빈솔재1KHz지50KHz、고전평재0V지1200V가조、하강연가체6ns적고압부맥충;채용LiNbO3정체작위전광정체,운용우소공솔Nd：YVO4격광기적전광조Q,공작재고전평위725V,빈솔위10KHz시,획득료맥관약13ns적맥충격광수출。
A quick back-pressure electro-optic Q-switch driver is developed,with advantages of simple structure,good stability,small size and low cost.The 0-1500V high voltage DC level with stability of less than 0.2% and ripple less than 300mV is provided by a step-up DC / DC switching power supply based on the PWM-type integrated controller SG3525.Using high-pressure power MOSFET as a switching device,a high-voltage negative pulse with frequency at 1-50KHz,high level in the 0-1200V adjustable and falling up to 6ns is obtained.Using LiNbO3 crystal as electro-optic crystal in a low-power Nd：YVO4 Q-switched laser,a laser pulse with width of about 13ns and frequency of 10KHz is output operating in the high level of 725V.