大芯径石英光纤中皮秒脉冲激光的自聚焦

Self-focusing of picosecond pulses in large-core optical fibers

本文报道了对大芯径石英光纤中皮秒脉冲激光自聚焦现象的实验研究和理论分析.文中测量了自聚焦先场的近场光强轮廓,研究了自聚焦光场的时域和频域性质,并对环形自聚焦光场的成因进行了解释.

In this paper, experimental observation and theoretical analysis of self-focusing of picosecond laser pulses in large-core silica fibers are reported. The nean-field intensity distribution of self-focusing light field was measured. Temporal and spectral characteristics were recorded. A waveguide model was proposed to explain the formation of ring structure of the self-focusing light.