模式耦合、弯曲畸变、弯曲损耗是大模场光纤激光中重要的考虑因素。为了研究模场畸变对于大模场光纤光束质量的影响，理论研究了阶跃......

Mode distortion induced by stimulated Raman scattering (SRS) has become a new obstacle for the further development of hi......