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Message ID: 58     Entry time: Mon Feb 8 18:08:53 2010
Author: Frank 
Type: Misc 
Category: AOM 
Subject: thermal images of AOM 

took some images with the thermal imaging camera of the AOM installed in the PSL so far. The first three pictures show the AOM driven with 75MHz, 80MHz and 85MHz.

85MHz:
IR20100208_0013.jpg

80MHz:

IR20100208_0014.jpg

75MHz:
IR20100208_0012.jpg

it is interesting that the hottest zone is at the end of the crystal, not where the pzt is mounted. It looks like the crystal is not proper mounted. Here a normal image for comparison...
P1410925.JPG

so i took some pictures of a different AOM, but same model. Here are the pictures for different power levels @ 80MHz:

IR20100208_0029.jpg

IR20100208_0030.jpg

IR20100208_0024.jpg

this looks normal...

*** Rana: I've replaced Frank's AOM picture with a zoomed in one. This circuit looks a little sloppy to me - why are the coils so loose?

Attachment 4: P1410925.JPG  3.180 MB  | Show | Hide all | Show all
Attachment 7: IR20100208_0024.jpg  25 kB  | Hide | Hide all | Show all
IR20100208_0024.jpg
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