Question

(a) An atom has a transition between two of its levels. The lifetime of the lower level is 10 ns and the Einstein A coefficient of the upper level is $10^7 \text{s}^{-1}$. Is it possible, in principle, for CW laser oscillation to be observed on this transition?

Name: (a) An atom has a transition between two of its levels. The lifetime of the lower level is 10 ns and the Einstein A coefficient of the upper level is 10^7 s^-1. Is it possible, in principle, for CW laser oscillation to be observed on this transition?
Uploaded: 2023-07-21T12:56:27-08:00
Channel: Susan Hallstrom
Description: (a) An atom has a transition between two of its levels. The lifetime of the lower level is 10 ns and the Einstein A coefficient of the upper level is 10^7 s^-1. Is it possible, in principle, for CW laser oscillation to be observed on this transition?

          (a) An atom has a transition between two of its levels. The lifetime of the lower level is 10 ns and the Einstein A coefficient of the upper level is $10^7 \text{s}^{-1}$. Is it possible, in principle, for CW laser oscillation to be observed on this transition?

(a) An atom has a transition between two of its levels. The lifetime of the lower level is 10 ns and the Einstein A coefficient of the upper level is 10^7 s^-1. Is it possible, in principle, for CW laser oscillation to be observed on this transition?

Added by Jeremy S.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Susan Hallstrom

07/21/2023

Step 1

Given that the lifetime of the lower level is 10 ns, we have A = 1/(10 x 10^-9 s) = 10^8 s^-1. Show more…

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(a) An atom has a transition between two of its levels. The lifetime of the lower level is 10ns and the Einstein A coefficient of the upper level is 10^(7)s^(-1). Is it possible, in principle, for CW laser oscillation to be observed on this transition? a An atom has a transition between two of its levels. The lifetime of the lower level is 10 ns and the Einstein A coefficient of the upper level is 107 s-1. Is it possible, in principle, for CW laser oscillation to be observed on this transition?