Apr 13, 2022

Optical microsystems from Fraunhofer IPMS enable high-resolution fast light control

Spatial light modulators consisting of arrays of micromirrors on semiconductor chips
Source: Fraunhofer IPMS
Apr 13, 2022

Optical microsystems are forging the Path of Light: The photonic systems of the Fraunhofer Institute for Photonic Microsystems IPMS can modulate light using small deflectable mirrors to create images and structures in a unique way. Hereby the research institute is developing spatial light modulators with up to several million mirrors on a semiconductor chip. The main areas of application for mirror matrices are in the fields of microlithography in the deep ultraviolet range, production of printed circuit boards (PCBs), semiconductor inspection and metrology, as well as in adaptive optics, astronomy, holography and microscopy. 

CMOS-integrated micro mirror array

The latest development of Fraunhofer IPMS is a CMOS-integrated micro mirror array with two tilting axes per mirror and associated technology platform. In addition to its use in the semiconductor industry, the innovation enables novel methods of imaging in microscopy, especially for biomedical applications. The latter are realized in cooperation with the “Fraunhofer center for Microelectronic and Optical Systems for Biomedicine" MEOS within the Fraunhofer IPMS.

New developments can be seen at LASER in Munich

At the LASER - World of PHOTONICS in Munich this week, visitors can find out about the latest developments at Fraunhofer IPMS. "One of our exhibits is the 2-axis tilting mirror demonstrator, which can be applied in optical beam steering, among other applications. In general, the micro mirrors of the IPMS spatial light modulators are individually tilted or deflected vertically, depending on the application, so that optical patterns are projected and thereby for example surface structures are formed," explains Dr. Michael Wagner, head of the Spatial Light Modulators (SLM) business unit at Fraunhofer IPMS. "Using the tilting mirror macromodels, visitors can also move the micro mirrors of the spatial light modulators themselves using a large model and gain an impression of the deflection functionalities that are possible. 

Contact: Dr. Anne-Julie Maurer,  Fraunhofer Institute for Photonic Microsystems IPMS
anne-julie.maurer@ipms.fraunhofer.de 

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