3.5 Grating alignment
stage
θ
is then given as
θ
= 200
−
θ
G
.
Where the value 200 comes from the approximate maximum angle of 200ˇr between
the grating and the beam in the kit.
Place the detector facing the front lens. Align the goniometer stage appropriately
and find the signal. Optimize the rotation stage angle in order to maximize the signal.
Figure 3.6: Schematics of orientation of the grating in the setup. the laser beam is
shown schematically by the red arrows.
c
2018
SA
23
Summary of Contents for ECLK
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