Wavelength dependence of all optical quasi-steady-state spatial solitons
全光准稳态空间孤子对波长的依赖性

A wavelength dependence phenomenon was observed in the experiments of all optical quasi steady state spatial solitons. Under the same condition of intensity, the longer the wavelength of signal beams, the longer the time duration of quasi steady state is. Particularly, when the wavelength of signal beams is long enough, such as 632 8nm, it was found that the soliton was a steady one which differs from that observed before. A theory is given for the phenomenon.