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Model
5528A
Measurements
Using a
Plane
Mirror Int
erferometer
Alignment Aids
To
help
in
aligning the
plane
mirror
interferometer, two
alignment
aids are included.
They
a re:
•
Alignme
nt
Target
(PIN 10702-600(
1)
(See
figure
D-4)
•
Alignme
nt
Aid
(PIN
10706-60001) (See
Figure
0·4)
!loth
alignment
aids
a re magnetic
to simplify positioning
them on the
interferometer.
The alignment
target
is
used
on the
input
side
of
the
interf~rometer
to propedy position the
beam
In
the Input aperture.
The
alignment
aid is
placed on the exit aperture
(on
the plane mirror
converter) to
all
ow using
the autoreficcUon method
of aligning
the plane mirror
inte rfe
rometer.
The alignment
aid
needs
to be
propcdy
oriented
so
that
the
primary measurement beam
goes
through
the
hole on
the
alignment
ald.
The primary measurement
beam is
the first
of
two measurement
beams
that
go
between
the
Interferometer and the
plane
mirror.
To find
the
primary
beam,
block one
of the
two
measurement
beams
and
if
the
other
disappears, then the one
blocked
Is
the
primary
measure me
nt
beam.
ALIGNMENT TARGET
PI
N 10702·60001
ALIGNMENT AIO
PI
N
10706·
60001
Figure
0-4.
I-IP
10706A
Alignment
Aids
Alignment
Procedure
Refe
r
to
Figure
0
-5
during
this
procedure.
The procedure
given
is the
ovedapping
dots
method.
SERIES
2732A
1.
Align
the plane mirror
perpendicular
to
the
axis
of travel.
2.
For straight
through
configurations,
align the
laser
beam perpendicular to the plane
mirror
by
aUlorefiection.
D·l
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