Laser Diffraction - Gratings
To demonstrate diffraction (well, actually interference) by a grating.◙
Laser cart with slide-mounted gratings.◙
Several different gratings can be readily mounted into the laser beam to study the effect of grating spacing: (1) 570 slits per mm, (2) 15,000 slits per inch, and (3) a triple grating with 2400 slits per inch, 2500 slits per inch, and 13,400 slits per inch.
Kenneth S. Mendelson and Frank G. Karioris, The diffraction grating under nonuniform illumination, AJP 58, 954-956 (1990).