Code Number: 7G55.10
Demo Title: Diode Lasers
Condition: Excellent
Principle: Wavelengths of Diode Lasers
Area of Study: Modern Physics
Equipment:
Array of 6 LED lasers.
Procedure:
This laser array of 6 different colors is also used in 6D20.15 and 6D20.20.
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.
References:
- 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.
- Jennifer Sieben, "A Titanium:Sapphire Laser on a Chip", Physics Today, Vol. 77, #9, Sept. 2024, p. 14.