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4.
First fixed mirror adjustment
(
(1) Attach the fixed mirror.
(2) Set up the first optical axis adj. jig.
(3) Adjust the hex. socket set screws (refer to the
illustration below) until the beam
passes thru
the pin-hole.
Power-meter
PR-8210-A
(4) After the adjustment,
confirm
that the laser
power
at the position
noted
in the drawing
measures 0.9mW to 1.6mW.
в, ams ac Adjustment
е.
РО!
screw
М
First fixed mirror
First optical adjustment jig
>
©
linsert all the way in)
3
Beam
spot
ж Adjustment
|
screw
=
Beam spot
-N
e
—?
` .- After adjustment is complete,
Beam spot
Adjustment
У
T
screw
Ad
2^
tap here lightly and recheck
МЕ]
еж
rounded
tip
optical-axis alignment
| ау
РМА 3X8 x
Adjustment
5.
Second fixed mirror and grating adjustment
(1) Attach the second fixed mirror.
(2) Adjust
the
hex,
socket
adjustment
screws
behind
the
mirror
so
that
the
beam
passes
through
the
pin-hole
of second
optical
axis
adj. jig. The
relation between
the beam
spot
and the screws is same as the first fixed mirror
adjustment.
(3) Tap
the
back
of
the
second
fixed
mirror
lightly and recheck the optical axis.
(4) Attach the grating.
(5) Insert the grating adj. driver into the opening
for the
adjustment,
then
engage
the grating
driver with the cog of the grating.
с
м 3X6
Grating stopper
First order beam
Grating
\
Hex socket screw P
rounded point
screw
(6) Adjust
the
grating
by
rotating
the
grating
driver so that the first order beam falls on the
scratch line of the jig.
(7) Installation of the grating will throw the zero
order
beam
off a bit. Readjust
second
fixed
mirror.
(8) Repeat
steps
(6) and
(7) until the following
conditions are met.
* The zero order beam passes through the pin-
hole of the jig.
® The first order beam falls on the scratch line
of the jig.
Grating driver
GGV-053
2
Scratch line
Zero order beam
Tap here lightly and
recheck the optical axis.
а?
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