Dr. Jan Kinast Profile

Dr. Jan Kinast

at Fraunhofer-IOF

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Author

Publications (15)

Proceedings Article | 30 August 2019 Presentation + Paper

Ultraprecise flat mirrors for the pointing unit of the DESIS instrument on board of the ISS

Stefan Risse, Jan Kinast, Andreas Gebhardt, Robert Jende, Knut Kleinbauer, Sandra Müller, Thomas Peschel, Christoph Damm, Matthias Schwarzenberg, Matthias Kroedel, Ingo Walter, David Krutz

Proc. SPIE. 11101, Material Technologies and Applications to Optics, Structures, Components, and Sub-Systems IV

KEYWORDS: Thermography, Hyperspectral imaging, Mirrors, Polishing, Diamond machining, Metals, Spectrometers, Ceramics, Mirror pointing, Magnetorheological finishing

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Proceedings Article | 12 July 2019

Protected silver coatings for reflectors

Stefan Schwinde, Mark Schürmann, Ralph Schlegel, Jan Kinast, Reinhold Dorn, Jean Louis Lizon, Sebastien Tordo, Norbert Kaiser

Proc. SPIE. 11180, International Conference on Space Optics — ICSO 2018

KEYWORDS: Reflectors, Argon, Sputter deposition, Silicon, Silver, Resistance, Reflectivity, Oxygen, Infrared spectroscopy, Aluminum

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Proceedings Article | 12 July 2019

Stray light reduction of silicon particle reinforced aluminum for optical systems

Jan Kinast, Alexander Telle, Sven Schröder, Marcus Trost, Stefan Risse

Proc. SPIE. 11180, International Conference on Space Optics — ICSO 2018

KEYWORDS: Mirrors, Scattering, Particles, Silicon, Light scattering, Optical coatings, Fractal analysis, Aluminum, Stray light, Plasma

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Proceedings Article | 10 July 2018 Paper

Manufacturing of aluminum mirrors for cryogenic applications

Jan Kinast, Ralph Schlegel, Knut Kleinbauer, Ralf Steinkopf, Roman Follert, Reinhold Dorn, Jean Louis Lizon, Artie Hatzes, Andreas Tünnermann

Proc. SPIE. 10706, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III

KEYWORDS: Mirrors, Single point diamond turning, Polishing, Coating, Manufacturing, Aluminum, Optics manufacturing, Magnetorheological finishing, Cryogenics

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Proceedings Article | 17 November 2017

Athermal metal optics made of nickel plated AlSi40

Andreas Gebhardt, Jan Kinast, Ralf-Rainer Rohloff, Walter Seifert, Matthias Beier, Sebastian Scheiding, Thomas Peschel

Proc. SPIE. 10563, International Conference on Space Optics — ICSO 2014

KEYWORDS: Mirrors, Polishing, Nickel, Silicon, Manufacturing, Aluminum, Astronomical imaging, Metal optics, Optics manufacturing, Cryogenics

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Metal optics is an inherent part of space instrumentation for years. Diamond turned aluminum (Al6061) mirrors are widely used for application in the mid- and near-infrared (mid-IR and NIR, respectively) spectral range. Aluminum mirrors plated with electroless nickel (NiP) expand the field of application towards multispectral operating instruments down to the ultraviolet wavelengths. Due to the significant mismatch in the coefficient of thermal expansion (CTE) between aluminum and NiP, however, this advantage occurs at the cost of bimetallic bending. Challenging requirements can be met by using bare beryllium or aluminum beryllium composites (AlBeMet) as a CTE tailored substrate material and amorphous NiP as polishable layer. For health reasons, the use of beryllium causes complications in the process chain. Thus, the beryllium approach is subjected to specific applications only. Metal optics has proven to be advantageous in respect of using conventional CNC and ultra-precision fabrication methods to realize complex and light-weighted instrument structures. Moreover, the mirror designs can be effectively optimized for a deterministic system assembly and optimization. Limitations in terms of dimensional stability over temperature and time are mainly given by the inherent material properties (figures of merit) of the substrate material in interaction with the polishing layer.

To find an optimal compromise, a thermal matched aluminum-silicon alloy (silicon contents ≈ 40 wt%) plated with NiP (AlSi40/NiP ) was investigated in a joined project of the Max Planck Institute for Astronomy MPIA and the Fraunhofer Institute for Applied Optics and Precision Engineering IOF. The main tasks of the project were the minimization of the bimetallic bending, the development of reliable stabilizing and aging procedures, and the establishment of a proven fabrication method.

This paper describes fundamental results regarding the optimization of the athermal material combination. Furthermore, the developed production chain for high quality freeform mirrors made of AlSi40/NiP is pointed out.

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Proceedings Article | 17 November 2017

Dimensional stability of metal optics on nickel plated AlSi40

Jan Kinast, Kevin Grabowski, Ralf-Rainer Rohloff, Stefan Risse, Andreas Tünnermann

Proc. SPIE. 10563, International Conference on Space Optics — ICSO 2014

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Proceedings Article | 22 February 2017 Presentation + Paper

Investigation of electroless Ni(P)/Pd/Au metallization for solder joining of optical assemblies using laser-based solderjet bumping

Thomas Burkhardt, Max Mäusezahl, Marcel Hornaff, Oliver de Vries, Jan Kinast, Christoph Damm, Erik Beckert

Proc. SPIE. 10097, High-Power Laser Materials Processing: Applications, Diagnostics, and Systems VI

KEYWORDS: Optical components, Optical spheres, Laser energy, Ionizing radiation, Nickel, Laser welding, Optical fabrication, Cements, Laser stabilization, Plating, Laser optics, Adhesives, Pulsed laser operation, Laser bonding

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Proceedings Article | 22 July 2016 Paper

Manufacturing and coating of optical components for the EnMAP hyperspectral imager

M. Schürmann, D. Gäbler, R. Schlegel, S. Schwinde, T. Peschel, C. Damm, R. Jende, J. Kinast, S. Müller, M. Beier, S. Risse, B. Sang, M. Glier, H. Bittner, M. Erhard

Proc. SPIE. 9912, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation II

KEYWORDS: Short wave infrared radiation, Telescopes, Mirrors, Antireflective coatings, Prisms, Imaging systems, Spectrometers, Silver, Coating, Surface finishing

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Proceedings Article | 11 October 2015 Paper

Fabrication of metal mirror modules for snap-together VIS telescopes

Matthias Beier, Johannes Hartung, Jan Kinast, Andreas Gebhardt, Frank Burmeister, Uwe Zeitner, Stefan Risse, Ramona Eberhardt, Andreas Tünnermann

Proc. SPIE. 9633, Optifab 2015

KEYWORDS: Telescopes, Mirrors, Polishing, Metrology, Diamond machining, Nickel, Space telescopes, Optics manufacturing, Magnetorheological finishing, Surface finishing

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Proceedings Article | 11 October 2015 Paper

Polishability of thin electrolytic and electroless NiP layers

Jan Kinast, Matthias Beier, Andreas Gebhardt, Stefan Risse, Andreas Tünnermann

Proc. SPIE. 9633, Optifab 2015

KEYWORDS: Mirrors, Diamond turning, Polishing, Nickel, Aluminum, Deposition processes, Metal optics, Magnetorheological finishing, Surface finishing, Chemical mechanical planarization

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Proceedings Article | 2 September 2015 Paper

Structured surfaces on metal optics

Ralf Steinkopf, Johannes Hartung, Jan Kinast, Andreas Gebhardt, Stefan Risse, Ramona Eberhardt

Proc. SPIE. 9574, Material Technologies and Applications to Optics, Structures, Components, and Sub-Systems II

KEYWORDS: Diamond turning, Diamond, Diamond machining, Copper, Spectrometers, Surface roughness, Extreme ultraviolet, Metal optics, Optics manufacturing, Diffraction gratings

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Proceedings Article | 28 July 2014 Paper

Unimorph-type deformable mirror for cryogenic telescopes

Claudia Reinlein, Matthias Goy, Nicolas Lange, Jan Kinast

Proc. SPIE. 9151, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation

KEYWORDS: Actuators, Telescopes, Mirrors, Electrodes, Deformable mirrors, Optical testing, Photonic integrated circuits, Cryogenics, Surface finishing, Temperature metrology

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Proceedings Article | 18 July 2014 Paper

Minimizing the bimetallic bending for cryogenic metal optics based on electroless nickel

Jan Kinast, Enrico Hilpert, Nicolas Lange, Andreas Gebhardt, Ralf-Rainer Rohloff, Stefan Risse, Ramona Eberhardt, Andreas Tünnermann

Proc. SPIE. 9151, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation

KEYWORDS: Mirrors, Polishing, Nickel, Silicon, Interferometry, Aluminum, Phosphorus, Magnetorheological finishing, Cryogenics, Temperature metrology

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SPIE Journal Paper | 27 November 2013

Cryogenic testing of a unimorph-type deformable mirror and theoretical material optimization

Matthias Goy, Claudia Reinlein, Jan Kinast, Nicolas Lange

JM3 Vol. 13 Issue 01

KEYWORDS: Mirrors, Temperature metrology, Cryogenics, Deformable mirrors, Manufacturing, Actuators, Finite element methods, Ferroelectric materials, Adaptive optics, Titanium

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Proceedings Article | 20 July 2010 Paper

A novel athermal approach for high-performance cryogenic metal optics

Ralf-Rainer Rohloff, Andreas Gebhardt, Veit Schönherr, Stefan Risse, Jan Kinast, Sebastian Scheiding, Thomas Peschel

Proc. SPIE. 7739, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation

KEYWORDS: Telescopes, Mirrors, Diamond, Polishing, Nickel, Silicon, Interferometry, Aluminum, Cryogenics, Temperature metrology

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Showing 5 of 15 publications

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