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- Image stabilization
- Laser beam stabilization
- Beam switching
- Adaptive optics systems
- Laser beam steering & scanning
- Correction of polygon scanner errors
- Interlacing, dithering
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S-340 piezo tip/tilt platforms are fast and compact tilt units, providing precise angular movements of the top platform in two orthogonal axes. The tip/tilt range is 2 mrad (equivalent to 4 mrad optical beam deflection) with sub-µrad resolution. Closed-loop versions are available for highest accuracy and repeatability. S-340 systems are designed for mirrors up to 100 mm diameter and have outstanding angular stability over a wide temperature range.
To match the CTEs (coefficients of thermal expansion) of various mirror materials, platforms made from different materials are available (see ordering information).
Open / Closed-Loop Operation
In open-loop operation, the platform angle roughly corresponds to the drive voltage (see page see link in the “Tutorial“ section for behavior of open-loop piezos). The open-loop models are ideal for applications where the position is controlled by an external loop, based on data provided by a sensor (e.g. PSD, quad cell, CCD chip, etc.).
The closed-loop versions are equipped with two pairs (one per axis) of LVDT (linear variable differential transformer) sensors operated in a bridge circuit for ultra-high resolution and angular stability. They provide sub-µrad resolution and repeatability.
Higher Performance Through Parallel Kinematics
S-340 tip/tilt platforms feature a single moving platform, parallel-kinematics design with a common pivot point. Compared to stacked, multi-axis systems, the parallel-kinematics design provides faster re-sponse and better linearity with equal dynamics for all axes in a smaller package.
Working Principle / Lifetime
S-340 tip/tilt platforms are equipped with two pairs of long-life, ceramic-encapsulated, high-performance PICMA® piezo drives operating as a unit in push/pull mode. The aluminum case is equipped with an integrated, FEA-modeled (finite element analysis) circular flexure featuring zero stiction, zero friction and exceptional guiding precision.
Since drives and guides are frictionless and not subject to wear and tear, these units offer an exceptionally high level of reliability.
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Notes
See the “Selection Guide“ on p. see link for comparison with other steering mirrors.
See the “Piezo Drivers & Nanopositioning Controllers“ section for our comprehensive line of low-noise modular and OEM control electronics for computer and manual control.
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PDF Catalog Datasheet
