How do you make a laser with spark?

I just dont undertsand i used: 'metl, phot, clne, nscn, pscn i made it like as in the one before the last picture and i still cannot turn the laser out

but that yellow thing that clne right where else come the photon from? can somebody help me with teamviewer

what means off topic, nobody can help me on beginnersinfo?

you have teamviewer so you can let me see?