Nd:YAG脉冲激光器双光路时分复用系统研究  

Nd:YAG Pulsed Laser Double-Pass Time-Sharing Multiplexing System

作　　者：张健[1] 张庆茂[1] 陈国[1] 李泽曦[1] 吴锐欢[1] 郭亮[1,2] 刘颂豪[1] 

机构地区：[1]华南师范大学广东省微纳光子功能材料与器件重点实验室,广东广州510006 [2]华南理工大学机械与汽车工程学院,广东广州510641

出　　处：《激光与光电子学进展》2013年第1期153-157,共5页Laser & Optoelectronics Progress

基　　金：中央财政支持地方高校专项资金(510-C10293);广东省教育部产学研结合重点项目(2010A090200048);广东省教育厅学科建设专项(CXZD1139);华南理工大学国家金属材料近净成形工程技术研究中心开放基金(2011006)资助课题

摘　　要：为满足多光路、多工位激光加工需求,采用Nd:YAG脉冲激光器为光源,研制出激光器双光路时分复用系统。提出了时分复用的具体实施方案,设计出能够实现时分复用分光的可控30°旋转分光装置以及对装置的工作状态实现实时控制的时分复用控制电路,并确定了系统的工作时序。最终在不降低输出功率的前提下,实现了激光的时分复用、双光路输出。实验利用能量计采集数据,对光路耦合效率进行计算,实验表明,在电流为50A、脉宽为4ms、能量为7.3J时,A路耦合效率为85.21%,B路耦合效率为85.23%,满足多工位加工需求。最后结合实际应用,将所设计的两光路,一路用于焊接,一路用于熔覆。In order to satisfy the need of multi-pass and multi-station laser processing, Nd： YAG pulsed laser is chosen as the light source and the laser double-pass time-sharing multiplexing system is developed. A concrete implementation scheme for time-sharing multiplexing is put forward, and in order to achieve time-sharing multiplexing beam splitting, controllable 30~ revolving beam splitting device is designed, besides, a time-sharing multiplexing control circuit is designed to achieve real-time control of the device, and the system working time sequence is determined. In this way, time-sharing multiplexing and multi-pass output can be realized under the premise of not reducing the output power. Energy meter is used to collect data for calculating the light path coupling efficiency. The results of experiments show that when the current is 50 A and pulse width is 4 ms, the coupling efficiency of path A is 85.21% and that of path B is 85.23%, in the state of which the demand of multi-station processing can be met. And combined with practical applications, two splitting light paths are designed, one is used for welding and the other for melting and coating.

关 键 词：激光器 双光路激光 时分复用 耦合效率 

分 类 号：TP23[自动化与计算机技术—检测技术与自动化装置] TP211.6[自动化与计算机技术—控制科学与工程]