【求助】激光拉曼中用到的notch filter

if the monochromator is used, usually, yes, you need a notch filter which rejects the stray light from laser. If double or triple spectrographs are used, the notch filter is not necessary.

second question: yes, for different wavelength laser radiation, you have to use different notch filter. You can check the transmittance curve to make the choice of filter.

notch filter 没有可调谐的吧，对应某一个激发波长，有一个相应的notch filter。操作的时候，如果切换波长，就要调换notch filter

可调谐的？太贵了。恐怕用不起的！！！窄带的，od也只有4，就是贵

可调谐的？太贵了。恐怕用不起的！！！窄带的，od也只有4，就是贵

可调谐的？太贵了。恐怕用不起的！！！窄带的，od也只有4，就是贵