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Message ID: 237     Entry time: Wed Apr 20 10:09:50 2022
Author: Rodolfo 
Category: Laser 
Subject: Optic with spots 
The average energy produced by the laser along the beamtime was about 10 mJ/puls. After about two weeks of beamtime some of the optics, especially the optic placed just after the BBO crystall, got some spots, see pictures below. Here the diameter of the laser beam is about 6 mm.
Attachment 1: SHG_Compensator_mitFleck_19-04-2022.jpg  96 kB  Uploaded Wed Apr 20 11:13:37 2022  | Show | Hide all | Show all
Attachment 2: UV_Umlenkspiegel_mitFleck_19-04-2022.jpg  103 kB  Uploaded Wed Apr 20 11:14:05 2022  | Hide | Hide all | Show all
UV_Umlenkspiegel_mitFleck_19-04-2022.jpg
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