Dr. Michiel Rodenhuis Profile

Dr. Michiel Rodenhuis

Instrumentation Coordinator at NOVA

SPIE Involvement:

Author

Publications (13)

Proceedings Article | 13 December 2020 Poster + Paper

Freeform active mirror designed for additive manufacturing

Szigfrid Farkas, Tibor Agócs, Carolyn Atkins, Leon Brouwers, Joris Dufils, András Joó, György Mező, Katherine Morris, Michiel Rodenhuis, Mélanie Roulet, Hermine Schnetler, Robert Snell, Fabio Tenegi-Sanginés, Afrodisio Vega-Moreno, Bart van de Vorst

Proceedings Volume 11451, 114512M (2020) https://doi.org/10.1117/12.2561327

KEYWORDS: Additive manufacturing, Disk lasers, Actuators, Optics manufacturing, Telescopes, Mirrors, Prototyping, Optical fabrication, Assembly tolerances, Interfaces

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Proceedings Article | 10 July 2018 Presentation + Paper

Characterization of an f/2 freeform active mirror

Szigfrid Farkas, Tibor Agócs, Gabby Aitink-Kroes, Lee Chapman, William Cochrane, Wayne Holland, Emmanuel Hugot, Fahad Iqbal, Dávid Jáger, Michel Marcos, György Mező, Maria Milanova, Chris Miller, David Montgomery, Michiel Rodenhuis, Mélanie Roulet, Hermine Schnetler

Proceedings Volume 10706, 1070617 (2018) https://doi.org/10.1117/12.2313413

KEYWORDS: Actuators, Mirrors, Finite element methods, Computer aided design, Optics manufacturing, Optical testing, Solid modeling, Control systems, Performance modeling

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Proceedings Article | 25 September 2017 Open Access

Development and optical performance tests of the Si immersed grating demonstrator for E-ELT METIS

Ramon Navarro, Tibor Agócs, Lars Venema, Aaldert van Amerongen, Michiel Rodenhuis, Ruud W. Hoogeveen, Tonny Coppens, Bernhard Brandl, Ramon Vink

Proceedings Volume 10562, 1056257 (2017) https://doi.org/10.1117/12.2296128

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Proceedings Article | 22 July 2016 Paper

Optical tests of the Si immersed grating demonstrator for METIS

Tibor Agócs, Ramon Navarro, Lars Venema, Aaldert van Amerongen, Ruud W. Hoogeveen, Tonny Coppens, Govert Nieuwland, Michiel Rodenhuis, Bernhard Brandl, Ramon Vink

Proceedings Volume 9912, 991215 (2016) https://doi.org/10.1117/12.2234686

KEYWORDS: Diffraction gratings, Silicon, Semiconducting wafers, Wavefronts, Diffraction, Wafer-level optics, Spectrographs, Photomasks, Prisms, Bidirectional reflectance transmission function

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Proceedings Article | 22 July 2016 Paper

A cryogenic 'set-and-forget' deformable mirror

Robin Trines, Huub Janssen, Sander Paalvast, Maurice Teuwen, Bernhard Brandl, Michiel Rodenhuis

Proceedings Volume 9912, 99121B (2016) https://doi.org/10.1117/12.2231402

KEYWORDS: Mirrors, Actuators, Cryogenics, Deformable mirrors, Wavefronts, Manufacturing, Finite element methods, Superposition, Interferometers, Infrared telescopes

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This paper discusses the development, realization and initial characterization of a demonstrator for a cryogenic 'set and forget' deformable mirror. Many optical and cryogenic infrared instruments on modern very and extremely large telescopes aim at diffraction-limited performance and require total wave front errors in the order of 50 nanometers or less. At the same time, their complex optical functionality requires either a large number of spherical mirrors or several complex free-form mirrors. Due to manufacturing and alignment tolerances, each mirror contributes static aberrations to the wave front. Many of these aberrations are not known in the design phase and can only be measured once the system has been assembled. A 'set-and-forget' deformable mirror can be used to compensate for these aberrations, making it especially interesting for systems with complex free-form mirrors or cryogenic systems where access to iterative realignment is very difficult or time consuming.

The mirror with an optical diameter of 200 mm is designed to correct wave front aberrations of up to 2 μm root-mean square (rms). The shape of the wave front is approximated by the first 15 Zernike modes. Finite element analysis of the mirror shows a theoretically possible reduction of the wave front error from 2 μm to 53 nm rms. To produce the desired shapes, the mirror surface is controlled by 19 identical actuator modules at the back of the mirror.

The actuator modules use commercially available Piezo-Knob actuators with a high technology readiness level (TRL). These provide nanometer resolution at cryogenic temperatures combined with high positional stability, and allow for the system to be powered off once the desired shape is obtained. The stiff design provides a high resonance frequency (>200 Hz) to suppress external disturbances.

A full-size demonstrator of the deformable mirror containing 6 actuators and 13 dummy actuators is realized and characterized. Measurement results show that the actuators can provide sufficient stroke to correct the 2 μm rms WFE. The resolution of the actuator influence functions is found to be 0.24 nm rms or better depending on the position of the actuator within the grid. Superposition of the actuator influence functions shows that a 2 μm rms WFE can be accurately corrected with a 38 nm fitting error. Due to the manufacturing method of the demonstrator an artificially large print-through error of 182 nm is observed. The main cause of this print-through error has been identified and will be reduced in future design iterations. After these design changes the system is expected to have a total residual error of less than 70 nm and offer diffraction limited performance (λ14) for wavelengths of 1 μm and above.

Proceedings Article | 7 October 2015 Paper

Performance of silicon immersed gratings: measurement, analysis, and modeling

Michiel Rodenhuis, Paul Tol, Tonny Coppens, Phillip Laubert, Aaldert van Amerongen

Proceedings Volume 9626, 96261M (2015) https://doi.org/10.1117/12.2191266

KEYWORDS: Semiconducting wafers, Prisms, Silicon, Inspection, Diffraction gratings, Spectrographs, Infrared radiation, Polishing, Scanning electron microscopy, Optical design

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Proceedings Article | 12 June 2014 Paper

Five-dimensional optical instrumentation: combining polarimetry with time-resolved integral-field spectroscopy

M. Rodenhuis, F. Snik, G. van Harten, J. Hoeijmakers, C. Keller

Proceedings Volume 9099, 90990L (2014) https://doi.org/10.1117/12.2053241

KEYWORDS: Polarization, Modulation, Polarimetry, Sensors, Wave plates, Spectroscopes, Modulators, Exoplanets, Optical instrument design, Microlens array

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Proceedings Article | 24 September 2012 Paper

The extreme polarimeter: design, performance, first results and upgrades

M. Rodenhuis, H. Canovas, S. Jeffers, Maria de Juan Ovelar, M. Min, L. Homs, C. Keller

Proceedings Volume 8446, 84469I (2012) https://doi.org/10.1117/12.927203

KEYWORDS: Polarization, Polarimetry, Stars, Calibration, Telescopes, Adaptive optics, Modulators, Beam splitters, Exoplanets, Sensors

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Proceedings Article | 24 September 2012 Paper

A spectro-polarimetric integral field spectrograph for EPICS-EPOL

M. Rodenhuis, B. Sprenger, C. Keller

Proceedings Volume 8446, 84469J (2012) https://doi.org/10.1117/12.927206

KEYWORDS: Polarization, Polarimetry, Iterated function systems, Exoplanets, Spectrographs, Spectral resolution, Spatial resolution, Speckle, Planets, Prototyping

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Proceedings Article | 13 September 2012 Paper

FOAM: the modular adaptive optics framework

T.I.M. van Werkhoven, L. Homs, G. Sliepen, M. Rodenhuis, C. Keller

Proceedings Volume 8447, 84472V (2012) https://doi.org/10.1117/12.927001

KEYWORDS: Foam, Adaptive optics, Wavefronts, Wavefront sensors, Control systems, Device simulation, Polarimetry, Adaptive control, Cameras, Actuators

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Proceedings Article | 21 July 2010 Paper

EPOL: the exoplanet polarimeter for EPICS at the E-ELT

Christoph Keller, Hans Martin Schmid, Lars Venema, Hiddo Hanenburg, Rieks Jager, Markus Kasper, Patrice Martinez, Florence Rigal, Michiel Rodenhuis, Ronald Roelfsema, Frans Snik, Christophe Verinaud, Natalia Yaitskova

Proceedings Volume 7735, 77356G (2010) https://doi.org/10.1117/12.857626

KEYWORDS: Polarization, Polarimetry, Sensors, Exoplanets, Calibration, Coronagraphy, Telescopes, Modulators, Modulation, Stars

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