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(Created page with "--~~~~ Figured out that the flat polished fibers were the cause of power fluctuations after the TA in 1055nm set-up. Using an angle polished fiber fixed the issue. Power fluc...") |
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--[[User:Zjsimmons|Zjsimmons]] ([[User talk:Zjsimmons|talk]]) 23:23, 6 May 2014 (CDT) |
--[[User:Zjsimmons|Zjsimmons]] ([[User talk:Zjsimmons|talk]]) 23:23, 6 May 2014 (CDT) |
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Figured out that the flat polished fibers were the cause of power fluctuations after the TA in 1055nm set-up. Using an angle polished fiber fixed the issue. |
* Figured out that the flat polished fibers were the cause of power fluctuations after the TA in 1055nm set-up. Using an angle polished fiber fixed the issue. |
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* Power fluctuations are also not the reason the circuit is not locking the SHG cavity. Perhaps the gain roll-off needs to be at lower freq? as we are seeing some wiggles around 420Hz (piezo resonance freq). Maybe this is involved in failure to lock. We could also try adding fast feedback branch and see what happens. |
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Revision as of 04:24, 7 May 2014
--Zjsimmons (talk) 23:23, 6 May 2014 (CDT)
- Figured out that the flat polished fibers were the cause of power fluctuations after the TA in 1055nm set-up. Using an angle polished fiber fixed the issue.
- Power fluctuations are also not the reason the circuit is not locking the SHG cavity. Perhaps the gain roll-off needs to be at lower freq? as we are seeing some wiggles around 420Hz (piezo resonance freq). Maybe this is involved in failure to lock. We could also try adding fast feedback branch and see what happens.