diff options
Diffstat (limited to 'content/know/concept/multi-photon-absorption/index.pdc')
| -rw-r--r-- | content/know/concept/multi-photon-absorption/index.pdc | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/content/know/concept/multi-photon-absorption/index.pdc b/content/know/concept/multi-photon-absorption/index.pdc index a5f4ad7..337554d 100644 --- a/content/know/concept/multi-photon-absorption/index.pdc +++ b/content/know/concept/multi-photon-absorption/index.pdc @@ -253,7 +253,7 @@ $$\begin{aligned} This represents **two-photon absorption**, since it peaks at $\omega_{e0} = 2 \omega$: two identical photons $\hbar \omega$ are absorbed simultaneously to bridge the energy gap $\hbar \omega_{e0}$. -Suprisingly, such a transition can only occur when $\matrixel{e}{\vu{p}}{0} = 0$, +Surprisingly, such a transition can only occur when $\matrixel{e}{\vu{p}}{0} = 0$, i.e. for any even-numbered final state $\ket{e}$. Notice that the rate is proportional to $|\vb{E}|^4$, so this effect is only noticeable at high light intensities. @@ -333,7 +333,7 @@ so this effect only appears at extremely high light intensities. ## N-photon absorption -A pattern has appeared in these calculcations: +A pattern has appeared in these calculations: in $N$th-order perturbation theory, we get a term representing $N$-photon absorption, with a transition rate proportional to $|\vb{E}|^{2N}$. |