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Josh Notebook: Difference between revisions
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'''5/15/2014'''
The 1064 stability seems to be better, but not great.
Got the 785 beam going back through the cavity. We tried to overlap the 785 with the 1064 in two different ways:
-using the Newport camera to look at two places after the dichroic coupling mirror on the 1064 side
--comparing the transmitted 785 and the reflected 1064, which we assume should match up with the resonant 1064 in the cavity
---we may have messed this part up, confusing a reflection of the 785 for the main 785 beam
-roughly overlapping the two beams on either side of the cavity
--we did this by eye/IR viewer
---due to the different propagation directions, it's tough to do this with the camera.
--on the 1064 transmitted side, we used the IR card, using the transmitted 1064 on the front and the 785 showing through from the back.
--on the 1064 reflected side, we used a notecard and the IR view to see the beams in the same location as for the first method above.
added 2 785 notch filters in the path of the beam transmitted through the dichroic on the 1064 reflected side so that we have a better chance of seeing the 785 sidebands (at about 633 and 1020)
couldn't see any sidebands on OSA, but we're not very confident about overlap
'''5/14/2014'''
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