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Semrock 滤光片

Semrock 滤光片

进阶拉曼光谱学

拉曼光谱允许通过分子独特的振动和旋转能级结构来检测和识别分子。与需要添加单独的荧光分子作为附加到实际目标分子的“标签”的荧光方法相反,拉曼光谱允许直接检测没有化学变化的分子。 然而,另一个重要的区别是散射的拉曼信号(作为激发功率的百分比)比相应的荧光信号弱几个数量级。因此,激光通常用作激发源以在紧密聚焦的光斑中提供高功率,并且使用非常灵敏的检测器来检测非常微弱的信号。

Semrock 备有广泛的 拉曼光谱边缘滤光片 可供选择, ,边缘波长从 224 nm 到 1550 nm。这些滤光片非常陡峭且透光率高,以至于它们的性能甚至比全息陷波滤光片还要好,但价格却不到其一半。现在,您可以在比以往任何时候都更靠近激光线的地方看到弱的信号。凭借其深激光线阻挡、宽和低纹波通带、久经考验的硬涂层牢靠性和高激光损伤阈值,它们提供好的性能。

激光到达检测器可能淹没相对较弱的拉曼信号,我们提供了 单陷波滤光片多陷波滤光片, 它们可以阻挡一条或多条激光线,同时在两侧传输光。对于有辨别力的拉曼测量,通过使用匹配的 MaxLine™ 激光净化滤光片 净化您的激光光谱,消除激光光谱噪声泄漏。

了解有关拉曼光谱的更多信息:

技术文档

拉曼光谱应用的滤光片类型

激光损伤阈值

相关应用

紫外拉曼光谱

相关出版物

用于拉曼光谱学的薄膜滤光片 2004 年 12 月版 光谱学

附加资源

雷尼绍拉曼光谱应用

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