General Aim of Laser Beam Simulator
To verify that the profile for a laser beam is Gaussian and determine its characteristics using laser beam simulator.
Method
Laser Source-Photodiode Method in performing divergence of laser beam experiment.
Learning Objectives (ILOs)
By the end of the laser beam divergence experiment, student will learn:
Define the profile of a laser beam.
Set up an experiment to study the laser beam profile and laser divergence.
Determine the laser beams’ diameter.
Prove that the laser does not obey the inverse square law.
Theoretical Background / Context
- Most low-intensity laser sources emit laser beam with gaussian beam propagation
in the transverse direction. where 2 zis the beam diameter at which the beam intensity falls to Io/e 2.
- Also, due to the coherent property of the laser, it shouldn’t obey the inverse square law obeyed by ordinary light which can be demonstrated through a laser beam simulator.
Principle of Work
- By measuring the laser beam intensity using a photodiode sensor, as a function of the distance from the center of the beam in the transverse direction through laser simulation using a laser beam simulator, we obtain the profile for the gaussian laser beam which should be Gaussian.
- Hence, the beam diameter could be found. Plotting the beam profile at different distances from the source could be done by laser simulation online and determine the laser divergence which proves that the laser does not obey the inverse square law.
- The laser beam divergence measurement can be performed through simulation software laser beam or laser beam simulator online platforms.
- This laser divergence experiment demonstrates laser beam divergence characteristics, and the complete analysis can be conducted using laser beam simulation software or any laser simulator tool available for the laser beam divergence experiment.
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