The conditions for long distance propagation and self - guiding are given . 3 . an optical amplification system for 10 ps krf laser with polarization multiplexing is developed and the energy of 140 ml is extracted 发展了一种适用于超短脉冲激光的光学偏振放大技术,并应用于10pskrf激光放大系统中,可在有限的激光输出口径内有效地提取激光的输出能量。