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Asked: January 21, 20212021-01-21T10:48:45+00:00 2021-01-21T10:48:45+00:00In: MAKAUT

9(b). Obtain a relation between the Einstein’s A and B coefficients. In a He-Ne laser transition from $E_{3}$ to $E_{2}$ level gives a laser emission of wavelength 632.8nm. If the energy of the $E_{2}$ level is $15.2\times10^{19}$ J, how much pumping energy is required? Consider no energy loss.

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9(b). Obtain a relation between the Einstein’s A and B coefficients. In a He-Ne laser transition from $E_{3}$ to $E_{2}$ level gives a laser emission of wavelength 632.8nm. If the energy of the $E_{2}$ level is $15.2\times10^{19}$ J, how much pumping energy is required? Consider no energy loss.

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