PI launches cryogenic nanopositioning development program

PI (Physik Instrumente) has launched a low-temperature development program focused on multi-axis nanopositioning systems for quantum applications.

Early cryogenic motion solutions often used stacked XYZ stages, but newer applications require 5- and 6-degree-of-freedom alignment systems that can support larger payloads and more complex optical configurations.

PI’s approach is based on compact 6DOF parallel kinematics designed for use within the limited space of cryostats and dilution refrigerators. The systems are intended for optical tasks such as beam steering, lens aberration correction, polarization control, fiber alignment and positioning of dispersive elements such as gratings and prisms.

They are designed to operate at temperatures below 4K while supporting motion of several hundred grams over millimeter-scale travel ranges with stability and repeatability.

Hexapod-type parallel kinematics provide simultaneous control of all six degrees of freedom, which can help reduce the error accumulation often seen in stacked systems. Other characteristics include low inertia, lower energy requirements, a programmable pivot point for rotational alignment, and an open aperture for optical access.

The piezo-based architecture is designed to limit heat generation and allows self-locking operation when power is switched off, which can be useful in thermally sensitive low-temperature environments. The use of non-magnetic materials and UHV compatibility also supports integration near sensitive quantum devices.

This development expands PI’s motion technology work for quantum research and cryogenic photonic systems.

The technology is intended for use in the quantum technology, photonics and semiconductor industries.

For more information, visit pi-usa.us.