7G55.10 - Diode Lasers

Code Number:
Demo Title:
Diode Lasers
Wavelengths of Diode Lasers
Area of Study:
Modern Physics
Array of 6 LED lasers.

Adjust the lasers so that they are in a straight vertical line when turned on.  A grating placed in front of the lasers will show how the light is diffracted for each color of laser.  

CAUTION:  The batteries for each of these diode lasers must be inserted in the opposite direction from a flashlight.  In other words, the positive end of the batteries should be at the back cap of the lasers.

  • Abdulaziz M. Aljalal, "Michelson Interferometry With a Diode Laser", AJP, Vol. 90, #5, May 2022, p. 373.
  • Abdulaziz M. Aljalal, "Measuring the Speed of Light Using Optical Feedback from a Picosecond Diode Laser", AJP, Vol. 90, #3, March 2022, p. 211.
  • Robert E. Hebner Jr., J. Daniel Jones, Kaare J. Nygaard, "GaAs Laser Experiments for the Undergraduate Laboratory*", AJP, Vol. 41, #2, Feb. 1973, p. 217.

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