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- Mar 5, 2015
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What you are calling an artifact in the beam sot looks like something it your optical path. I'd check the diode window carefully. Also, look for anything out of place between the diode window and the lens. That rectangle should not be there and there is a reason for it. Just need to find what that reason is. It is also possible there is a reflection is the module that shouldn't be there.
Really Paul that rectangle shouldn't be there, most high power diodes have that rectangle when using a G2!
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