V-931 two-axis fast steering mirror platform

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The V-931 two-axis fast steering mirror platform (FSM) from Physik Instumente is based on a frictionless, precision flexure guiding mechanism, with differential voicecoil drives and optical feedback for accurate closed-loop angular position control.

The compact, durable design produces a beam deflection angle to 8° in theta-X and theta-Y, with symmetrical motion characteristics delivered by its parallel kinematics design. The angular resolution of the standard model is 1µrad (higher resolution models are available).

The two orthogonal tip/tilt axes share a common centre of rotation, providing significantly better performance, free of polarisation rotation issues, while reducing package size compared to older designs based on stacking two individual scanning axes.