超短脉冲激光在气体中传播时会发生自聚焦、电离、吸收、散射、散焦和自相位调制等多种过程，其结果是人射激光的强度和光谱都将发生变化．得到巨大展宽的光谱则称为超连续光谱．在产生等离子体的情况下，赵连续光谱的产生是等离子体密度随时间变化引起人射激光非线性相移随时 Ultrashort pulsed lasers can undergo self-focusing, ionization, absorption, scattering, defocusing and self-phase modulation when propagating in gas. As a result, the intensity and spectrum of the human laser beam will change. Spectra that get a huge stretch are called supercontinuum. In the case of plasma generation, the generation of a continuous spectrum of Zhao is caused by the non-linear phase shift of the human-induced laser light due to changes in the plasma density over time