Laser Beam Simulator: Laser Beam Divergence Experiment

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.