Tuesday, August 14, 2007

YAG #4 beam alignment

Before running the third amplifier, it's necessary to check pump laser beam qualities of YAG #3 and YAG #4. We found the some beam delivering mirrors for YAG #4 had been burned. Two mirrors were replaced by the new ones, the other two mirrors were just carefully rotated to avoid beam hit the small burned dots.

It's so excited that the spectrometer can be controlled by the desktop.

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