Stefan Vorndran

Vice President of Marketing, PI (Physik Instrumente)
Phone: 508-832-3456

Stefan Vorndran is VP of marketing at PI (Physik Instrumente; Auburn, MA).      

FIGURE 1. Aligning parts that have become misaligned because of stress, creep, or settling processes is an application for active shims, when submicron or even nanometer precision and stability are required.
Positioning, Support & Accessories

Motion Control: Active piezo shims improve precision of optical assemblies

Nov. 1, 2018
Because of the down-to-nanometer-range resolution of their piezo elements, active shims cover applications in precision engineering and alignment of optical components.
(Courtesy of PI)
FIGURE 1. Silicon photonics couplings often deviate from clean predictable Gaussian coupling cross-section. Profiles of this sort cannot be reliably optimized with traditional alignment algorithms. Otherwise, the optimization risks locking onto one of the local optima rather than the global optimum. This can be efficiently achieved by performing an areal scan of the target area, thereby mapping the coupling cross-section across its full extent. A piezo-based scanner can achieve this in fractions of a second.
Positioning, Support & Accessories

Positioning: Silicon photonics manufacturing requires parallelism in alignment processes

Oct. 13, 2017
To make silicon photonics devices profitably at scale, automation subsystems require alignment processes that support steps from device characterization at the wafer level to ...
(Courtesy of PI)
FIGURE 1. An aerial image of a building is shown with (right) and without (left) image stabilization and resolution enhancement.
Detectors & Imaging

Imaging: Piezo and hexapod motion systems improve image stability and resolution

Oct. 13, 2016
Fast mechanical systems are available to the optical engineer for improving image resolution and stability, as well as providing multi-axis motion simulation methods for testing...