大芯径光纤激光器的新进展(邀请论文)  

Recent Progress of Large Core Fiber Lasers (Invited Paper)

作　　者：楼祺洪[1] 周军[1] 张海波[1] 袁志军[1] 

机构地区：[1]中国科学院上海光学精密机械研究所,上海201800

出　　处：《中国激光》2010年第9期2235-2241,共7页Chinese Journal of Lasers

基　　金：国家863计划(2008AA03Z405)资助课题

摘　　要：光纤激光的输出功率在十余年内迅速上升,目前连续输出的光纤激光功率已达千瓦以上。由于光纤纤芯可承受功率和光纤纤芯大小有关,而加大纤芯直径会降低光束质量,为了进一步提高光纤激光输出功率而不降低光束质量,一种方法是设计超大模场双包层光纤,加大光纤中低阶模的直径;另一种方法是加大光纤的纤芯直径,并用各种方法改进它的光束质量。对以上两种方法进行介绍,并给出一部分实验结果。The output power of fiber lasers increased very fast during the past decades,more than kilowatt can be obtained from single fiber laser.In order to further increase the output power,the core diameter should be increased to avoid the damage of the core surface,but the beam quality will be decreased.In this paper,two methods are introduced： one is to design the large mode field fibers and another is increasing the core diameter with new technology to improve the beam quality.Some experimental results are given in detail.

关 键 词：光纤光学 光纤激光器 大芯径 大模场 模式选择 光纤设计 光纤缠绕 光纤拉锥 

分 类 号：TN248.1[电子电信—物理电子学] O436.1[机械工程—光学工程]