光纤型宽调谐中红外激光光源的设计与研制  

Design and development of a fiber-type widely tunable mid-IR laser source

作　　者：王会娟[1] 常建华[1,2] 赵恒磊[1] 赵佳生[1] 冯素娟[1] 郭强[1] 毛庆和[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所安徽省光子器件与材料重点实验室,安徽合肥230031 [2]南京信息工程大学电子与信息工程学院,江苏南京210044

出　　处：《量子电子学报》2011年第3期287-292,共6页Chinese Journal of Quantum Electronics

基　　金：中科院创新基金项目(CXJJ-10-M54);安徽省重点实验室建设项目

摘　　要：报道了一种光纤型宽调谐中红外差频产生(DFG)激光光源,该系统分别以掺镱光纤激光器(YDFL)和掺铒光纤激光器(EDFL)作为泵浦和信号源。为拓宽基频光调谐范围,采用了4个不同工作波段的YDFL,并通过电控光开关实现段间的快速切换,总调谐范围为1040～1110nm;采用电控偏振控制器(ECPC)分别对基频光偏振态进行精确快速控制,以提高系统转化效率;利用PID算法和负反馈技术分别稳定泵浦LD温度和驱动电流,并将其工作状态通过LCD实时显示。测试结果表明,该中红外激光系统可在3.04～3.72μm内连续调谐。A widely tunable mid-infrared difference frequency generation （DFG） laser source is reported which uses ytterbium doped fiber lasers （YDFL） and an erbium, doped fiber laser （EDFL） as the fundamental lights respectively. By using an electronically controlled optical switch to choose one of different tuning bands＇respectively supplied by four tunable YDFLs and to quickly switch among them, the whole tuning range of the pump light is broadened to be between 1040 nm and 1110 nm. Two electronically controlled polarization controllers （ECPC） respectively operating in 1060 nm and 1550 nm waveband are also used to precisely adjust polarizations of the pump and signal lights, so as to improve the conversion efficiency of the DFG system. The PID algorithm and feedback technique are used to control the temperature and driving current of the pump LDs, the controlled conditions are displayed with an LCD. The measurement resultsshow that the mid-infrared laser system may be continuously tuned within the range of 3.04 - 3.72μm.

关 键 词：激光技术 中红外 差频产生 光纤激光器 宽调谐 

分 类 号：TN252[电子电信—物理电子学]