athar_s
Newbie level 3
plz solvw this problem and give its solution
Given that the life time of the upper level of the λ=632.8 nm transition in He-Ne
laser is 1*10^-7 sec,calculate the degree of population inversion required to give a gain coefficient of 0.07 /m ignoring line-broadening effect.
ans=4.39*10^5 /m³
Given that the life time of the upper level of the λ=632.8 nm transition in He-Ne
laser is 1*10^-7 sec,calculate the degree of population inversion required to give a gain coefficient of 0.07 /m ignoring line-broadening effect.
ans=4.39*10^5 /m³