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Align table optics at 900nm with the laser in alignment mode(shortest wavelength)
1) Mount pockels cell just after laser, and align so that beam goes through it. Then manually set pockels cell power to about 10% for the rest of the alignment procedure.
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16) Set periscope entrance mirror center to be 120 mm heigh (or height of laser beam).
### Add diagram with beams 1, 2, 3, 4.
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