But to date no materials have exhibited strong enough nonlinear response to protect sensitive optical elements from laser-induced damage. , we researched the Graded Density Limiter and Tandem limiter.

为解决现有非线性材料的非线性不能达到有效激光防护效果的问题，我们又研究了串列光限幅器件及浓度剃度光限幅器件的光限幅效率的影响因素。

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