6D20.50 • Gratings: Crossed Gratings and Laser

Location: Floor Demo

Instructions / Notes:

• Two identicle gratings can each be rotated in a laser beam.
• They will be initially set so there is a linear pattern on the wall.
• Rotate one grating to produce a 2D array of dots.

Photo Shows the Apparatus Used at the University of Texas at Austin

Last updated on June 8, 2026