Anton Lagosh,1 Gergely Huszka,1 Hamed Sattari,1 Berit Ahlers,2 Benedikt Guldimann,2 Grégoire Kerr,3 Mauro Melozzi,4 Peyman Rahnama,4 Takeshi Nishizawa,3 Niels Quackhttps://orcid.org/0000-0001-5189-09291
1Ecole Polytechnique Fédérale de Lausanne (Switzerland) 2European Space Research and Technology Ctr. (Netherlands) 3OHB-System AG (Germany) 4Micos Engineering GmbH (Switzerland)
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We present the concept and detailed design of a Smart Slit Assembly for next generation spectrometers, and we experimentally demonstrate operation of an individual 221 μm × 111 μm smart slit channel employing a MEMS actuated shutter to continuously modulate the intensity of the optical input signal. The MEMS actuated shutter is fabricated in a 211 μm thick device layer of a Silicon-On-Insulator wafer by Deep Reactive Ion Etching. Electrostatic comb drive actuators allow an absolute displacement of 52 μm at 74 V, resulting in a continuously tunable shutter efficiency of up to 99.97% at an operating wavelength of 532 nm.
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