(ii) Consider the two-level system with E1 A21 6 x 108 s-1, Niand N2 are the populations of level E1 and E2, respectively and A21 is the Einstein coefficient of spontaneous emission. -13.6 eV and E2 = -3.4 eV. Assume %3D %3D (a) What is the frequency of light emitted due to transitions from E2 and E1? (b) What is the population ratio N2/N1 at T = 300 K?
(ii) Consider the two-level system with E1 A21 6 x 108 s-1, Niand N2 are the populations of level E1 and E2, respectively and A21 is the Einstein coefficient of spontaneous emission. -13.6 eV and E2 = -3.4 eV. Assume %3D %3D (a) What is the frequency of light emitted due to transitions from E2 and E1? (b) What is the population ratio N2/N1 at T = 300 K?
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Transcribed Image Text:(ii) Consider the two-level system with E1 = -13.6 eV and E2 = -3.4 eV. Assume
A21 x 6 x 108 s-1. N1 and N2 are the populations of level E1 and E2, respectively and
A21 is the Einstein coefficient of spontaneous emission.
%3D
(a) What is the frequency of light emitted due to transitions from E2 and E1?
(b) What is the population ratio N2/N1 at T = 300 K?
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