Thanks for visiting Electro Optics.

You're trying to access an editorial feature that is only available to logged in, registered users of Electro Optics. Registering is completely free, so why not sign up with us?

By registering, as well as being able to browse all content on the site without further interruption, you'll also have the option to receive our magazine (multiple times a year) and our email newsletters.

S-331 steering mirror platforms

Share this on social media:

Physik Instrumente (PI) has released the S-331 fast tip/tilt platform, the newest piezo steering mirrors in PI’s portfolio. With millisecond response and settling time, and high dynamic linearity, these fast tip/tilt platforms are ideal for precision optics applications in ambient and vacuum environments.

S-331 steering mirror platforms provide precise angular tip/tilt motion of the top platform around two orthogonal axes. These flexure-guided, electro-ceramic driven systems can provide higher accelerations than other actuators, enabling step response times in the sub-millisecond range, with frictionless backlash-free motion.

The single pivot-point design also prevents the drawback of polarisation rotation, which is common with conventional two-axis stacked systems such as galvo scanners. With a tip/tilt angle up to 5mrad and optical deflection angle up to 10mrad, these platforms are ideal for compact mirrors up to 1/2 inch in diameter.

PI piezo steering mirrors are based on a parallel-kinematics design with coplanar rotational axes and a single moving platform driven by two pairs of differential actuators. The advantage is jitter-free, multi-axis motion with excellent temperature stability. Compared to stacked (two-stage) mirror scanners, the parallel-kinematics design provides symmetrical dynamic performance in both axes with faster response and better linearity in a smaller package. 

The steering mirrors are powered by 100 per cent ceramic insultated actuators that have a long lifetime, and are not sensitive to humidity or high operating temperatures.