From a77d159d6a7f73252308459fe121a28df99b6df2 Mon Sep 17 00:00:00 2001
From: Prefetch
Date: Thu, 31 Mar 2022 21:27:48 +0200
Subject: Expand knowledge base

---
 content/know/concept/multi-photon-absorption/index.pdc | 1 +
 1 file changed, 1 insertion(+)

(limited to 'content/know/concept/multi-photon-absorption')

diff --git a/content/know/concept/multi-photon-absorption/index.pdc b/content/know/concept/multi-photon-absorption/index.pdc
index b208cfe..a5f4ad7 100644
--- a/content/know/concept/multi-photon-absorption/index.pdc
+++ b/content/know/concept/multi-photon-absorption/index.pdc
@@ -4,6 +4,7 @@ firstLetter: "M"
 publishDate: 2022-01-30
 categories:
 - Physics
+- Optics
 - Quantum mechanics
 - Nonlinear optics
 - Perturbation
-- 
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