In this Physics video in Hindi for class 12 we explained the Construction and Working of Helium Neon Laser with energy level diagram.

Dr. K. V. Madhuri Helium Neon Laser
LINK :    • Video  
#true_point
#bsc_physics
#helium_neon_laser
#he_ne_laser
#ruby_laser
#laser
#relation_between_einstein's_coefficients
#induced_absorption
#spontaneous_emission
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#induced_emission
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