
B-70315EN/02 8.LASER OPTICAL SYSTEM
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8.3.1 Alignment Procedure for Adjusting All Mirrors
This subsection describes the procedure for readjusting a laser
oscillator already installed and adjusted using an old method, to
restore its maximum output state. Use this procedure in the following
cases:
• To adjust an existing oscillator that has not been adjusted using
the maximum power method
• When an oscillator is disassembled because of a failure
• When all mirrors are cleaned or replaced at a time
For cleaning or replacing the mirrors, follow the procedure described
in Section 8.2. Do not remove all mirrors at a time inadvertently.
8.3.1.1 Preparation
(1) Record the adjustment screw readings of the output coupler
(O.C.), rear mirror (R.M.), and folding mirrors (F.M.).
(2) Collect a burn pattern, and use it as the start state for mode
adjustment.
Near (3m) :
Cold mode or Hot mode (internal discharge for three minutes)
Far :
Cold mode or Hot mode (internal discharge for three minutes)
8.3.1.2 Adjustment method
(1) For C1000-E
(a) Obtain a maximum power based on O.C. by using the R.M.
as the reference.
(b) Obtain a maximum power based on FM3 by using the O.C.
as the reference.
(c) Obtain a maximum power based on FM3 by using the R.M.
as the reference.
(d) Collect a burn pattern. If the mode is good, end this
procedure. If not, start all over again from step (a). At this
time, collect a burn pattern in each step. If the mode is
finally good, end this procedure.
(2) For C2000-E
(a) Obtain a maximum power based on O.C. by using the R.M.
as the reference.
(b) Obtain a maximum power based on FM1 by using the O.C.
as the reference.