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David Notebook: Difference between revisions
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The beam is in the cavity and should be overlapped with the 1064 from about 22.5 cm to 97.5 cm. The 1064 beam is about 810 by 810 μm, so the beam is too big in some areas.
Following Jared's advice, I made a telescope with a 150 mm lens and a 75mm. By putting the 75mm one 225 mm from the 150 (f1+f2), the final beam should be fairly well columnated and smaller. This easily reduced the beam from around 1200 to 850 μm, which was very promising. I'll test more precise alignments and different lens combinations tomorrow. I'll have to rearrange the 780 optics again to accommodate a setup like this, but ti seems worth it if I can produce a sub
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