Interference & Diffraction of a Laser
- Interference and diffraction of lasers can be demonstrated with slits or diffraction gratings
- For light rays, such as a laser light through two slits, an interference pattern forms on the screen
Laser light interference experiment
- Constructive interference is shown as bright fringes on the screen
- The highest intensity is in the middle
- Destructive interference is shown as the dark fringes on the screen
- These have zero intensity