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David Notebook: Difference between revisions
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==Daily Log==
'''5/20/14''' We continued to try to measure the 633 beam using the OSA and a power meter. We still couldn't detect anything, and the power meter measurements put an upperbound on the power in the nW range. The 780 seed laser hadn't been staying single mode very well, which could be reducing 633 generation or spreading it out to nearby wavelengths. We decided to try to fix this before continuing the search for 633. We tracked the 780 problem down to ASE feedback from the TA getting through the isolator and to the seed laser. This was eventually solved (see [[David_Notebook#780_Laser_Notes|780 laser notes]]). We're hoping this will increase 633 generation, and the nW power upperbound might no longer be accurate. We will look using the OSA and power meter again tomorrow and also using a photo-diode with high gain, which might be more sensitive. We swapped the ________ photodiode and unplugged the 1555 reflected signal, which we will try to remember in a couple weeks when it doesn't work.
Bread time was especially good today. Josh added one banana to the mix, which seemed to result in a slightly more flavorful and substantially moister bread. Nick was notably agitated by having a pineapple cored on his desk, but settled down once it became apparent the mess wouldn't be too bad.
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