Hi,
I have borrowed time on CO2 lasers on campus. It’s not efficient absorption in glass, but it does work. I created a dwg file and used that for the pattern. The one I used was in a specific research group and I don’t know if it is around anymore.
One piece of advice – metalize the surface with 1 um of aluminum before ablating. The slag from the machining will deposit back and make the surface really crappy. If you put down this metal layer, it’s thin enough that it ablates off quickly. Also Al reflectivity in IR is not nearly so high as in the visible spectrum (unlike gold). Clean off the slag after the ablation mechanically and with rinsing, and then follow with a sulfuric perioxide clean. You’ll get a nice clean surface.
Tony Flannery
From: Max Shulaker [mailto:maxms@stanford.edu]
Sent: Tuesday, August 21, 2012 6:13 PM
To: labmembers@snf.stanford.edu
Subject: laser glass machining
Hello all,
I was wondering if anyone had suggestions for vendors in the area who do good (and cheap) laser (or other methods) of glass machining. On each glass slide, I'm just looking to do a few holes in the mm range, so it doesn't have to be anything super fancy.
Thanks,
Max
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