Multi-Axis Piezo Steering Mirrors
Multi-axis piezo-actuated tip/tilt mirror mounts and platforms from PI are based on parallel kinematics with a single moving platform for all directions of motion. The common platform approach achieves higher linearity than can be attained by cascading single-axis mirrors in succession (e.g. with most galvo scanners). The single platform design also avoids polarization rotation and is much more compact than a multi-stage approach.
High Dynamics and High Stability
Piezo-actuated tip/tilt mirrors and platforms are suitable both for highly dynamic operation, such as tracking, scanning, image stabilization, elimination of drift and vibration, and for static positioning of optical systems and samples.
Direct Drive and Motion Amplified Steering Mirrors
Piezo steering mirrors can provide very fast response times in the sub-millisecond range and resolutions down to nano radians. Direct-driven units achieve higher dynamics, while designs that take advantage of on internal flexure motion amplifiers provide for larger optical beam deflection up to 100 mrad.
Tip/Tilt/Piston System - Tripod Piezo Drive
The platform is driven by three piezo actuators that are located in 120° angles to one another. By means of coordinate transformation, the motion can be split among the different actuators. In addition to tilting, the platform may also be used linearly in Z direction (piston motion), useful for phase shifting and correcting optical path length differences.