非稳腔光束遮拦位置对远场光斑的影响  

Effect of Unstable Resonator Obscuring Position on Far Field Intensity

作　　者：牛志峰[1] 刘现魁[1] 

机构地区：[1]中国船舶重工集团公司第七一八研究所,河北邯郸056027

出　　处：《舰船防化》2015年第4期31-33,共3页

摘　　要：为了评估非稳腔环形光束遮拦位置偏移对远场光斑的影响，建立了偏心环形光束的计算模型，并利用夫琅和费衍射公式进行了计算。得到了不同偏心情况的激光束远场光斑强度分布曲线和环围能量分布。结果表明，偏心距越大的远场光斑主瓣能量占比越高，桶中功率也越高。计算结果对非稳定腔的装调以及偏心光束传输性能的评估具有一定的参考意义。In order to evaluate the influence over the far field beam by obscuring position shift of the unstable resonator, the mathematics model of the noncoaxial annular beam is built. The Fraunhofer diffraction formular is used to calculate the beam. The intensity distribution curves of the far field beam with different noncoaxial annular beams are calculated and the power in bucket curves is obtained. It is indicated that the further distance between centers of the beam is, the higher power in bucket of the far field beam is. The results have some referenced values on adjusting the unstable resonator and evaluating the performance of the annular beam.

关 键 词：非稳定腔 远场光斑 遮拦位置 光束质量 

分 类 号：TN242[电子电信—物理电子学]