NORTHROP GRUMMAN Patara I User Manual page 60

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 Make a horizontal adjustment to the HM mount. Recover the laser
power by making a similar adjustment to the horizontal control of
the HR mount. Check and adjust the temperature of SHG crystal.
 Continue if improvement is noted. If there is no improvement, try
the opposite direction.
 Perform the same procedure with the vertical adjustments of the
HM and HR mount.
 Typically, SHG temperature adjustment is not needed when
adjusting vertically. Periodically check for hold off when making
these adjustments (see in the Check Hold Off section in Chapter 5:
Maintenance).
 If laser power is within +/-5 percent of nominal (typical power
meter accuracy), and it has good beam shape and stability, stop and
replace the access screws in the cover.
48
Chapter Five: Maintenance
Patara I and II Laser User Manual