Chapter Five: Maintenance
© 2019 Cutting Edge Optronics, Inc.
41
Iklwa Laser User Manual
Approved for Public Release; NG19-2099 CEO-UMAN-0055E
Figure 5-7. Accessible Holes for HR and HM Cavity Mirror Adjustment
e.
Optimize power:
Make small adjustments to the horizontal angle of HM mirror and
observe the output power.
Once a maximum is found, adjust the vertical control of HM mirror to
maximize power.
Make small adjustments to the horizontal angle of HR mirror and
observe the output power.
Once a maximum is found, adjust the vertical control of HR mirror to
maximize power.
Repeat the optimization steps with both the HR and HM until there is
no significant performance improvement.
If the laser is still not within 5% of the original power or not stable,
repeat the steps of TEC optimization, current optimization, and HM,
HR adjustment until there is no significant performance improvement.
If the laser power can’t be restored to the specification, or the laser is
not stable, then the “walking the cavity” procedure can be tried.
Walking the cavity is sometimes required to optimize the laser and
involves combining mirror mount and SHG crystal temperature
adjustments.
Reduce current by 2 A while making coarse adjustments. Return
current to normal when making fine adjustments.
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.
Laser Out
