NORTHROP GRUMMAN Patara EPL-016-QTG Quick Installation Manual

NORTHROP GRUMMAN Patara EPL-016-QTG Quick Installation Manual Manual pdf 35 page image

Chapter Three: Laser Optimization and Tuning© 2019 Cutting Edge Optronics, Inc. 23 Patara End-Pumped Laser Quick Start GuideApproved for Public Release; NG19-1901Figure 3-2. Accessible Holes for HR and OC Mirror Adjustmente. Optimize power: Make small adjustments to the horizontal angle of HM mirror andobserve the output power. Once a maximum is found, adjust the vertical control of HM mirror tomaximize power. Make small adjustments to the horizontal angle of HR mirror andobserve the output power. Once a maximum is found, adjust the vertical control of HR mirror tomaximize power. Repeat the optimization steps with both the HR and HM until there isno significant performance improvement. If the laser is still not within 5% of the original power or not stable,repeat the eDrive current optimization, and HR / HM adjustment untilthere is no significant performance improvement. If the laser power can’t be restored to the specification, or the laser isnot stable, then the “walking the cavity” procedure can be tried.Walking the cavity is sometimes required to optimize the laser andinvolves combining mirror mount adjustments. Reduce current by 1A while making coarse adjustments. Returncurrent to normal when making fine adjustments. Make a horizontal adjustment to the HR mount. Recover the laserpower by making a similar adjustment to the horizontal control ofthe HM mount. Continue if improvement is noted. If there is no improvement, trythe opposite direction.LASER OUTACCESS HOLES FORHR MIRROR ADJUSTMENTACCESS HOLES FORHM MIRROR ADJUSTMENTCLOCKWISE—MOVE BEAM UPCOUNTERCLOCKWISE—MOVE BEAM DOWNCLOCKWISE—MOVE BEAM TO THE RIGHTCOUNTERCLOCKWISE—MOVE BEAM TO THE LEFTCLOCKWISE—MOVE BEAM TO THE LEFTCOUNTERCLOCKWISE—MOVE BEAM TO THE RIGHTCLOCKWISE—MOVE BEAM UPCOUNTERCLOCKWISE—MOVE BEAM DOWN

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