2.1 ev Group Metastable second 1.67 ev 1.17 ev (1.06 µm) 0.50 eV First 0 ev Ground state Figure 30.64 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 µm) 0.50 eV First 0 ev Ground state Figure 30.64 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.
Related questions
Question
Some of the most powerful lasers are based on the energy levels of neodymium in solids, such as glass, as shown in Figure 30.64. What average wavelength light can pump the neodymium into the levels above its metastable state?
Transcribed Image Text:2.1 ev
Group
Metastable
second
1.67 ev
1.17 ev (1.06 µm)
0.50 eV
First
0 ev
Ground state
Figure 30.64 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
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
