用光管探测气体

来源 :激光与光电子学进展 | 被引量 : 0次 | 上传用户:s83436776
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利用改进的Gerchberg-Saxton(GS)算法和广义相衬(GPC)结构,用纯相位空间光调制器(SLM)实现彩色图像的重现。提取出彩色图像的红、绿、蓝三色信息,利用改进的GS算法和相应波长的GPC结构,计算出输入面的纯相位分布。将所得相位分别编码加载到三个SLM上,用相应波长的激光分别照射三个SLM,在GPC输出面上进行合成,可以得到目标图像。与常规计算全息(CGH) 相比,该方法不需要移除零级衍射光,除具有较好的像质外,还提高了光能利用率;另外,根据不同波长设计固定的相衬滤波器(PCF)参量,不会
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本文首次报道稀土元素铕(Eu)的激光增强电离光谱.用紫外可调谐激光器检测到EuI 287.779um,EnI 287·887nm,EuI 289.254nm,Eul 289.303nm,EuI 289.383nm的单光子共振激光增强光谱.用可见区可调谐染料激光器检测到EuI的双光子共振激光增强电离光谱.对铕(Eu)原子激发和离化机理进行了讨论.稀土元素铕的检测限达10ng/ml.
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