Bots, Bureaucrats, Interface administrators, Suppressors, Administrators, Upload Wizard campaign editors
573
edits
David Notebook: Difference between revisions
Jump to navigation
Jump to search
→1064 Laser Notes
|
==1064 Laser Notes==
'''Threshold tests''' Usually get around 100 μW at 20 mA of current. A small adjustment of the diffraction grating (~a quarter turn total) will usually show little adjustment in output power, except for a narrow spike and drop off near the optimal grating feedback setting.
'''7/3/14''' Threshold test seemed off yesterday and was very off today. There is usually around 100 μW at 20 mA of current, but it took about 26 mA today and the laser was very multimode. Adjusting the grating position ultimately resolved the problem. The current reading on the driver is sometimes fluctuating, usually just by .1 mA, but sometimes by up to 5 mA. This doesn't seem to be causing any problems right now, but it is unclear why this is happening.▼
▲'''7/3/14''' Threshold test seemed off yesterday and was very off today.
| |||