摘要
为了提高双包层光纤激光器泵浦光的耦合效率,对泵浦光采用直角棱镜组进行了光束整形、空间滤波、非球面镜聚焦。实验测得滤波小孔尺寸为2mm×0.8mm时,聚焦光斑为325μm×200μm,系统的耦合效率为38％。该系统适当改进后可用于实施百瓦级光纤激光器的泵浦实验。
In order to raise the couple efficiency of pumping double cladding fiber laser, the beam is reshaped with rectangular prisms, spatial filtered and focused with aspheric lens. When the dimension of filter aperture is 2 mm×0. 8 mm, the size of the focused spot is 325 μm×200 μm, the coupling efficiency is 38%. The fiber laser in 100 watts level will be pumped successfully with the improved instruments investigated.
出处
《科学技术与工程》
2004年第2期115-117,共3页
Science Technology and Engineering
基金
国家自然科学基金(60244005)
