Laser Beam Couplers Series 60SMS
Adjustment_60SMS 10.12.2020 © Schäfter+Kirchhoff GmbH
Schäfter+Kirchhoff GmbH Kieler Str. 212 22525 Hamburg, Germany +49 40 85 39 97-0 info@sukhamburg.de www.sukhamburg.com
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4. Adapter for the Lateral Adjustment
The laser beam coupler can be connected to your laser system or optical bench by using an adapter flange or
it can be attached directly to a multicube element from Schäfter+Kirchhoff.
It is very important for an efficient coupling that the laser beam passes the aperture of the laser beam coupler
centrally.
Many lasers, such as HeNe lasers or DPSS lasers, have a 1´´ x 1´´ drilling pattern around the beam exit. For the-
se lasers, Schäfter+Kirchhoff offers an adapter flange which can be moved laterally in oversized holes in order
to center the adapter flange to the laser beam (Figure 13). Always attach the flange with the recommended
washers and spring washers.
Figure 13:
DPSS laser with a 1´´ x 1´´ drilling
pattern and attached adapter type
60A19.5-F.
The proper centering of the beam can be tested by attaching an aperture type 13H or a variable iris diaphragm
type 13BL1-13 instead of the laser beam coupler (Figure 14).
For centering the adapter flange, perform the following steps:
Figure 14:
Instead of a 60SMS laser beam
coupler, an aperture 13H is attached.
Measure the power transmitted by this aperture. Maximize the transmitted power by laterally shifting the
adapter. The adjustment is most sensitive if the aperture diameter is chosen to be about 70% of the collimated
beam diameter (1/e
2
).
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