====== He-Ne Laser ====== {{:physicsdemos:modern_physics:atomic_physics:hene_laser_1.jpeg?400|}} {{:physicsdemos:modern_physics:atomic_physics:hene_laser_2.jpeg?400|}} An open helium-neon laser may be used as a visual aid to discuss both the properties of laser light and how lasers work. L0 PIRA DCS 9B62.10