磁控式全固态激光器输出功率稳定装置

 本发明公开了一种磁控式全固态激光器输出功率稳定装置,其特征在于,该装置包括磁控式镜片平移装置、全反射镜、全固态激光器的激光头、全固态激光器的输出镜、45°激光部分反射镜、光电探测器和控制器,磁控式镜片平移装置带动激光器的全反射镜前后移动改变腔长；45°激光部分反射镜在腔外放置,用于将少量激光反射至光电探测器,光电探测器将收集到的光信号转换为电信号,然后将电信号传送至控制器,控制器经过内部程序运算计算出合适的激光器腔长改变量,并发出相应的驱动电信号精确调节磁控式镜片平移装置的前后位移,带动全反射镜前后位移改变腔长,从而改变激光腔的腔内损耗,补偿功率波动。利用本发明,达到稳定激光器输出功率的效果

一种用于单频激光器的激光腔型

本发明公开了一种用于单频激光器的激光腔型，包括：用于光纤耦合输出的泵浦源；在45°的情况下，对于泵浦光高透，对于振荡光高反的第一平面镜；作为谐振腔的输出镜的第二平面镜；在45°的情况下，对于振荡光高反的第三平面镜；在45°的情况下，对于振荡光高反的第四平面镜；对于振荡光高透，具有一定焦距的第一透镜；对于振荡光高透，具有一定焦距的第二透镜；以及激光晶体。利用本发明，不仅可以方便摆放更多的元器件，而且通过改变透镜的焦距，可以很容易的实现激光腔的模式匹配

Marine information gathering, transmission, processing, and fusion: current status and future trends

海洋信息的获取、传输、处理和融合,不仅在海洋科学研究、环境调查、资源开发、权益维护与安全防卫中发挥重要的作用,也因其应用环境的特殊性而成为信息科学研究的热点之一.海洋信息技术近30年的发展分享信息理论的丰富成果,同时突显出传播物理、信号处理以及海洋环境的紧密关系,这种结合在其他信息领域较为少见.本文主要关注海上目标探测、识别理论及方法;水下目标探测机理和识别方法;水下通信与海空一体信息传输;海洋环境遥感遥测理论与方法;海洋数据处理与信息融合方法与技术等.旨在通过对海洋信息获取、传输、处理和融合前沿研究的评述,凝练若干海洋信息关键科学问题,为我国海洋信息基础理论与方法的发展提供思路.Marine information gathering, transmission, processing, and fusion play an important role in many areas, such as marine science research, environmental expedition, resource exploitation, and security and defense.Owing to its specific application environment, it has also become a popular information science research area.Like other branches of information science, the development of marine information technology over the last thirty years has benefited significantly from advances and achievements in general information theory. However, the manner in which it highlights the close bonding among propagation physics, signal processing, and the marine environment is seldom seen in other areas. This paper first gives a comprehensive overview of the current status of the theory and methods used in surface target acquisition, underwater target recognition, underwater communications and sea-air integrated information transmission, oceanic remote sensing, and data processing and information fusion. Subsequently, with the aim of helping to advance fundamental research on marine information important scientific problems to be addressed are presented.国家自然科学基金(批准号:61531017,61431020,61431005,61531015,61531018,41376104)资助项