Why RED BUBBLES are impossible… or are they?!

Okay. So here's one you can test. If you look at a laser spot. You see it almost sparkling. So is this the interference we are talking about? Like as the photons leave the photodiode the phase of the light is slightly different amongst the surface of the diode and it interferes with the other photons leaving bright spots and dark spots in the laser dot. I am definitely not saying that this is the case but it's something I wonder about because it makes sense.