2.1 ev Group Metastable second 1.67 ev 1.17 ev (1.06 um) 0.50 eV First O ev Ground state Figure 30.65 Neodymium atoms in glass have these energy levels, one of which is metastable. The group of levels above the metastable state is convenient for achieving a population inversion, since photons of many different energies can be absorbed by atoms in the ground state.
2.1 ev Group Metastable second 1.67 ev 1.17 ev (1.06 um) 0.50 eV First O ev Ground state Figure 30.65 Neodymium atoms in glass have these energy levels, one of which is metastable. The group of levels above the metastable state is convenient for achieving a population inversion, since photons of many different energies can be absorbed by atoms in the ground state.
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Chapter1: Units, Trigonometry. And Vectors
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Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Some of the most powerful lasers are based on the energy levels of neodymium in solids, such as glass, as shown .
(a) What average
1.06 μm

Transcribed Image Text:2.1 ev
Group
Metastable
second
1.67 ev
1.17 ev (1.06 um)
0.50 eV
First
O ev
Ground state
Figure 30.65 Neodymium atoms in glass have these energy levels, one
of which is metastable. The group of levels above the metastable state
is convenient for achieving a population inversion, since photons of
many different energies can be absorbed by atoms in the ground state.
Expert Solution

Answer for part (a)
The energy released during the transition between metastable and the ground state can be given as
Substituting the values from the energy level diagram gives,
Answer for part (a) continues
Now, the required wavelength can be obtained as
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