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Entry  Mon Nov 9 17:38:18 2020, Paco, DailyProgress, General, SAF gain chip first light 2020_11_09_ldc200c_test.png20201109_aspheric.jpg20201109_firstlight.jpg20201109_grating.jpg
    Reply  Tue Nov 10 00:02:20 2020, Koji, DailyProgress, General, SAF gain chip first light 
       Reply  Tue Nov 10 10:32:57 2020, Paco, DailyProgress, General, SAF gain chip first light 
          Reply  Wed Nov 11 12:28:33 2020, Paco, DailyProgress, General, EP30 softening acetone_bath.jpg
Message ID: 1859     Entry time: Tue Nov 10 10:32:57 2020     In reply to: 1858     Reply to this: 1860
Author: Paco 
Type: DailyProgress 
Category: General 
Subject: SAF gain chip first light 

Set grating in front of 1064 nm beam (current set to 1.058 A for a beam visible on the IR card). After testing both orientations, it becomes clear the grating is misoriented. The difference is very clear, there is only specular reflection in the current configuration, whereas the m=0, and +- 1 orders are visible in the 180 deg flipped configuration. 

Quote:

Very exciting to see the gain chip curve!

Grating orientation: Whaaat... If you already have the 1um laser SOP approved, you can use that laser to check the grating orientation.

 

 

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