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In the high-power solid-state lasers,laser parameters of the systems critical interface can be quantitatively given by laser parameter measurement devices for physics experiments and devices operating status monitoring.In the laser parameter measurement device,the CCD for measuring the near field distribution usually needs variable attenuation of laser pulse intensity,in order to make full use of the dynamic range.The liquid crystal variable optical attenuator is used for this purpose in our research,which shows a dynamic stability control of the laser irradiation on the CCD in a wide range of laser intensity.