It is likely that all pupils will have experienced laser technology in their homes or at school but may well not familiar with the range of uses of lasers, their operation and safety.

Episode 504-2 (PDF, 19 KB) gives details of the safety measures required.

Ruby laser; Photon avalanche

Lasers form rather more of a 'tool' and so demonstration experiments are relatively few. However some ideas and an explanation of the workings and other details of a laser are given.