S-335 provides fast and high-resolution motion in two degrees of freedom
Based on solid-state piezo drives, the S-335 fast steering motor gives fast and high-resolution motion in two degrees of freedom. It is suited to precise high-speed laser beam control and can be used for high-resolution imaging applications. Using a differential push-pull mode for each axis makes it possible for the S-335 to have a long angular travel range. Excellent repeatability and accuracy are provided by closed-loop control which is guided by sensors.
PI’s steering mirrors are based on frictionless flexure guides and high-speed solid-state piezoelectric drives. The one device can encompass pitch and roll motion with a single mirror or optic. The steering system can be used in static or dynamic operations and is faster than existing voice-coil and galvo-scanners.
All PI piezo mirror mounts are equipped with PICMA multilayer piezo stacks which are ceramic-encapsulated. This ensures use for an ultra-long lifetime. 35mrad of mechanical angular deflection in two axes and 70mrad optical deflection is provided by the two-axis tip-tilt mirror. This technology has been tested successfully in 100 billion cycles of life testing as part of the Mars Rover Space mission.
PI also provides voice-coil-driven steering mirrors with larger travel ranges as well as space-qualified fast steering mirrors for LEO satellites.
Computers using digital nano-positioning motion controllers, such as the E-727 multi-axis controller series, can be used to control all mirrors in the S-355. Easy integration is provided by LabVIEW drivers and MATLAB example code being made available.
Error corrections are made in wavefront before it reaches an imaging sensor to prevent mistakes from occurring, whilst image resolution is improved using direct laser light.
Piezo-actuated mirror mounts can be used on a variety of projects, such as scanning, precision optical dithering, free-space optical communication, image stabilisation, laser welding and other functions.
