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A hypothetical molecular laser works
in 3 level energy system. The energies of the
levels. E₁, E2, and E3 are 0 eV, 0.18 eV and 0.30
eV respectively. If the laser transition takes
place between the levels E₂ and E₁ find the (1)
wavelength of radiation that excites the
molecules for the laser action.
1

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