The time modulation is detrimental to high power laser facility and even can prevent fusion ignition, which must be eliminated or substantially suppressed at least. Time domain filtering technology is proposed to eliminate such a time modulation based on optical limiting (OL) effect. OL is a nonlinear optical process by which a material displays high transmission for low input intensity and low constant transmission at high input intensity or fluence. Characters of the main OL mechanisms are introduced. In addition, the realization methods of time domain filtering based on OL devices and the application prospect are discussed.