Properties of Laser Light: Coherent

This is part three of a three part investigation of the properties of LASER light from other light. Part 1: Monochromatic Light and Part 2: Collimated Light.

In this part, we’ll demonstrate that LASER light is coherent by comparing the interference pattern of a red LASER pointer to that of an LED light.

Grade Range: 9 to 14

Duration: 1/2 Hour – 1 Hour

Supplies:


NGSS Connections


PS4.B: Electromagnetic Radiation

  • Communicate technical information about how some technological devices use the principles of wave behavior and wave interactions with matter to transmit and capture information and energy. (HS-PS4-5)
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