I had to finally conduct this critical test, especially since Raman signals are so very weak and luminosity can suffer a bit because of the notch filter I will be using, so I used my tactical flashlight (Bell & Howell...yeah the one on T.V.) and my variable polarizing filter (which graduates from fully opened to fully closed 0 - 100 %)

The purpose here was clear and logical, the 1st panel showed a blank live screen coming from my camera, the spectrum is there you just can't see it because the luminosity is so low. The following panels show the progression from normal shutter exposure settings to the most extreme ISO sensitivity @ 25600.

The primary wavelengths are in the green (514nm - 590nm) and orange to red (590nm - 614nm). Which I can verifiably resolve with this camera's cmos detector.