THORLABS M2MS, Operating Manual

Page: 118 / 167

BP209 Series 7 Operation Instructions
Page 116
21424-D02
7.2.8.1.1 Coarse Alignment
For a coarse alignment, Thorlabs provides an alignment laser that is included with the access-
ory box. For this step, the alignment laser is mounted on the M2MS in place of the Beam Pro-
filer as described below. It is mounted and aligned in such way that its output beam enters the
M2MS exactly centered in the Beam Profiler's aperture and is parallel to the stage movement
direction. The alignment beam is reverse directed - it virtually exits the Beam Profiler and is re-
directed by the two mirrors of the stage into the center of the laser source aperture (see the
drawing in section
M2MS Operating Principle ).
Warning Be careful when using the Alignment Laser!
·
Remove the Beam Profiler together with its mounting adapter from the M2MS base.
·
Install the adjustment laser in place of the Beam Profiler and connect its 3.5 mm plug to
the
Alignment Laser output (2) .
· Make sure the M2MS is switched on and connected to the control PC, the Beam Software
is started and the stage has been initialized.
· Remove the focal lens from the magnetic holder.
· Switch on the alignment laser.
· Align your optical system so that the spot of the alignment laser hits the center of your
light source.
7.2.8.1.2 Fine Alignment
After coarse alignment, the beam under test needs to be fine-adjusted using the Alignment
feature of the M² measurement panel. This is executed in two steps.
Preparation
·
Switch off the alignment laser and replace it with your Beam Profiler.
·
Make sure the BP209 beam profiler is connected to one of the M2MS USB 2.0 output
ports (
¤
, Connection to the PC section).
· Remove the focusing lens (see
¤
in the drawing in the M2MS Operating Principle sec-
tion).
·
Make sure the BP209 Series beam profiler is recognized by the Beam Software (Toolbar
Device Selection ). If it is not recognized automatically, press the Refresh Device
List button.
· Make sure the stage is recognized and initialized. If not, press the Refresh Stage List but-
ton and after the stage was recognized, double click to the DDS100 button. The stage
initializes and moves to the 200 mm position.
· Enable the Laser Under Test.
· Open M² child window either from the menu "Windows" -> "M² Quality Measurement" or
by clicking the
button, and switch to the Alignment tab.
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