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近年来，非线性光学材料以其特殊性质日益受到关注，并被广泛应用于各种领域．光限幅材料是一类在光强较弱时表现为线性吸收，而在光强较强时表现为吸收率增强的非线性吸收的材料．强光引起透射率减少可达到把入射光强和能量限制在一定范围，起到保护作用．其光限幅机制有很多
In recent years, nonlinear optical materials have attracted more attention due to their special properties and are widely used in various fields. Optical limiting materials are a class of nonlinear absorbing materials that exhibit linear absorption at weak light levels and exhibit enhanced absorption at higher light levels. Strong light caused by reduced transmittance can reach the incident light intensity and energy limited to a certain extent, play a protective role. There are many light limiting mechanisms