【摘要】 首先从理论上提出用液晶代替机械式可调谐衰减器中的半波片 (李国华 1992年 ,姚建铨 1983年 )的可能性 ,又通过实验证明了这一点 ,从而使得更加精确和方便地控制光强输出的变化 .更多还原

【Abstract】 In this paper, the possibility of substituting the half-wave plate of the attenuator assemble with the liquid crystal is suggested by theory analysis. Hence, the authors can control the output change of the incident intensity more precisely,then they use a pieces of BL-009 liquid crystals material to prove this point in experiment and make a relative analysis.更多还原