- #1
Carnot
- 19
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Can someone please explain this concept for me?
As I understand it, you have a, let's say, a three-level atom with two hyperfine states and an excited state. Then you apply a pump source (perhaps a laser) to transfer the atom from one of the hyperfine states (say |g1>) to the excited state. After applying the first laser, another laser source is applied to get the atom down to the second hyperfine state (|g2>).
I don't quite get this last step. How do you transfer the atom down to a lower energy level by applying a laser source? By stimulated emission?
As I understand it, you have a, let's say, a three-level atom with two hyperfine states and an excited state. Then you apply a pump source (perhaps a laser) to transfer the atom from one of the hyperfine states (say |g1>) to the excited state. After applying the first laser, another laser source is applied to get the atom down to the second hyperfine state (|g2>).
I don't quite get this last step. How do you transfer the atom down to a lower energy level by applying a laser source? By stimulated emission?