- #1
kq6up
- 368
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This is a quick question. This entry in the Laser Encyclopedia states that transitions differing in the angular momentum quantum number "l" by 1 are allowed. Here is the link:
https://www.rp-photonics.com/forbidden_transitions.html
However, diagrams that show energy transitions labeled "laser" transitions (my understanding this are "forbidden") are going from 3s to 3p and 2s to 2p. These should be fast transitions based on what I know about selection rules. What am I missing here? Here is the link to one of the images:
https://upload.wikimedia.org/wikipedia/commons/6/6f/He-ne-laser.svg
Thanks,
KQ6UP
https://www.rp-photonics.com/forbidden_transitions.html
However, diagrams that show energy transitions labeled "laser" transitions (my understanding this are "forbidden") are going from 3s to 3p and 2s to 2p. These should be fast transitions based on what I know about selection rules. What am I missing here? Here is the link to one of the images:
https://upload.wikimedia.org/wikipedia/commons/6/6f/He-ne-laser.svg
Thanks,
KQ6UP