摘要
文中介绍了一种新型低成本、抗冲击、窄脉宽且自带驱动电路的脉冲半导体激光二极管。该激光二极管采用了一种基于环氧树脂材料的椭球形光束整形透镜对出射的激光光束进行整形。该透镜的设计既满足了激光二极管对体积的要求,同时也简化了封装的步骤且节约了成本。为了缩小体积,减小电路中的寄生效应对窄脉宽信号的影响,该激光二极管采用裸芯代替了常用的独立封装芯片,以多芯片模块的方式制作了驱动电路,并采用金属支架作为散热和信号输入的引脚。激光二极管制作完成后,采用驱动电路对激光二极管进行了测试。实验结果显示该激光二极管在快轴方向的发散角约为1.1°,在慢轴方向发散角约为3.3°,其脉宽可以达到50 ns以下,峰值功率可达35 W。
A new laser diode feature in low cost, shock resistance, narrow pulse was introduced. The laser diode was packaged with epoxy resin which can not only satisfies the requirement of the space but also makes the packaging easier for the shaper could be fabricated with the packaging. To reduce the size and the influence of the parasitic effect of the circuit, a multi-chip module was used to make up the driving circuit and a set of unpacked chip was used to replace the common packed chip. A metal bracket was used as the pins and the cooler of the laser diode. In the test of the laser diode, the divergence angle of the laser diode with the shaper is 1.1° in the fast-axial direction and 3.3° in the slow-axial direction. The max peak power of the laser diode in this kind of packaging is 35 W and the width of the optical pulse is less than 50 ns.
出处
《红外与激光工程》
EI
CSCD
北大核心
2015年第B12期178-182,共5页
Infrared and Laser Engineering
