Phase Shifter

For precision positioning

  • Phase Shifter
    Phase Shifter

Phase shifters are used in laser measurement to align optical path lengths. These move optics in the range of a wavelength, which corresponds to an adjustment range of less than one micrometer. It is crucial for the alignment to take place quickly and in a stable manner. For the new S-303.BL phase shifter, PI Physik Instrumente replaces classic piezo ceramic PZT actuators (made of lead titanate - lead zirconate) with pico actuators made of a crystalline, lead-free material. These pico actuators are characterized by a high linearity, so that precision positioning is also possible in open-loop operation. With a travel range of 0.3 micrometers, they achieve a precision of 6 nanometers, which corresponds to a linearity of 2%. In comparison to classic piezo ceramics, however, pico actuators have a smaller displacement. Fields of application are therefore wherever high dynamics, short travel ranges and high precision requirements are necessary.

Graduated in political sciences and international relations in Paris, Anis joined the team in early 2019. Editor for IEN Europe and the new digital magazine AI IEN, he is a new tech enthusiast. Also passionate about sports, music, cultures and languages. 

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