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Diffstat (limited to 'source/know/concept/laser-rate-equations/index.md')
| -rw-r--r-- | source/know/concept/laser-rate-equations/index.md | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/source/know/concept/laser-rate-equations/index.md b/source/know/concept/laser-rate-equations/index.md index a84d274..1f42f73 100644 --- a/source/know/concept/laser-rate-equations/index.md +++ b/source/know/concept/laser-rate-equations/index.md @@ -187,7 +187,8 @@ $$\begin{aligned} } \end{aligned}$$ -To rewrite this, we replace $$|\vb{E}|^2$$ with the photon number $$N_p$$ as follows, +To rewrite this, we replace $$|\vb{E}|^2$$ +with the photon number $$N_p$$ as follows, with $$U = \varepsilon_0 n^2 |\vb{E}|^2 / 2$$ being the energy density of the light: $$\begin{aligned} |