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In page Monika Ritsch-Marte:

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Since moving into applied optics, Ritsch-Marte has contributed to the development and application of microscopic methods and optical tweezers. Her research group has pioneered new usages for spatial light modulators (SLM) in the form of liquid-crystal displays to optical microscopy.[citation needed] As a programmable Fourier filters, SLMs allow rapid switching between different microscopy modalities (bright field, dark field, phase contrast) without the need for changing any hardware components.