Far-UV multi-object spectroscopy with digital micromirror devices (DMDs)

Dmitry Vorobiev; Brian Fleming; Kathleen V. Oram; Dana Chafetz; Peter Zimmer; Alexis Irwin; Javier Del Hoyo; Manuel Quijada; Zoran Ninkov

doi:10.1117/12.2562540

14 December 2020 Far-UV multi-object spectroscopy with digital micromirror devices (DMDs)

Dmitry Vorobiev, Brian Fleming, Kathleen V. Oram, Dana Chafetz, Peter Zimmer, Alexis Irwin, Javier Del Hoyo, Manuel Quijada, Zoran Ninkov

Author Affiliations +

Proceedings Volume 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray; 114446Y (2020) https://doi.org/10.1117/12.2562540
Event: SPIE Astronomical Telescopes + Instrumentation, 2020, Online Only

Conference Poster

Abstract

Digital micromirror devices (DMDs) can be used as versatile, rapidly reconfigurable object selectors in spacebased multi-object spectrographs (MOS). DMDs are inexpensive, compact, reliable, high-throughput devices, that enable extremely flexible and efficient multi-object spectrographs; several DMD-based MOSs are currently being built for 4 m class ground-based telescopes. Previously, we have shown that DMDs are suitable for deployment and operation in space, in the near-UV and optical regimes (200 - 1000 nm). Using aluminum coatings protected with LiF and LiF/AlF3 films, we aim to extend the operational range of DMDs into the 100 - 200 nm FUV regime. Our initial coating runs produced DMDs with reflectivity > 40% in the range of 110 - 180 nm. Critically, the DMDs remain operational after the coating process. We will discuss potential for further improvement and introduce several mission concepts based on a FUV/NUV DMD MOS, that can be deployed on CubeSat and ESPA-class missions.

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Dmitry Vorobiev, Brian Fleming, Kathleen V. Oram, Dana Chafetz, Peter Zimmer, Alexis Irwin, Javier Del Hoyo, Manuel Quijada, and Zoran Ninkov "Far-UV multi-object spectroscopy with digital micromirror devices (DMDs)", Proc. SPIE 11444, Space Telescopes and Instrumentation 2020: Ultraviolet to Gamma Ray, 114446Y (14 December 2020); https://doi.org/10.1117/12.2562540

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