For a project I'm working on, I want to use a laser with photosensors to detect if the beam has been interrupted. I was figuring to just use a ~1mW red laser because I don't want it to cause any damage to whatever interrupts the beam.
I've used Cadmium-sulfide photosensors before, but never in conjunction with a laser. It's a round disk a little smaller than a dime. I was thinking to get a 2" piece of pipe the same diameter as the photosensor, paint the inside with flat black nonreflective paint, and mount the photosensor at the end, to block all ambient light.
Will a CdS photosensor work well with ~650nm red 1mW laser?