Fast steering mirrors (FSM) redirect light by rapidly tilting a reflective surface around two axes. In Optotune’sFSMs, a voice-coil actuator generates smooth and precise motion with minimal wear, supported by a long-lifetimeprecision bearing. The virtual rotation point is positioned close to the mirror surface, ensuring accurate beamalignment with minimal lateral shift. A built-in optical position sensor provides real-time feedback for closed-loopPID control, supported by onboard calibration and temperature monitoring for stable long-term performance. Withlow-latency analog interfaces and a choice of high-power mirror coatings, Optotune’s FSMs deliver compact,reliable, and highly responsive 2D beam steering.​

Optotune’s compact Fine Steering Mirrors (FMR) use a voice-coil actuator placed around the reflective surface toenable precise 2-axis motion. A single large mirror provides true 2D beam steering for low- to high-power laserswith micro-radian resolution, while the bearingless design ensures long operational lifetime.