Theory and design of spherical oscillator mechanisms

Autor: Lennart Rubbert, Ilan Vardi, Roland Bitterli, Nicolas Ferrier, M. H. Kahrobaiyan, Simon Henein, B. Nussbaumer

Publikováno v: Precision Engineering
Precision Engineering, Elsevier, 2017, ⟨10.1016/j.precisioneng.2017.10.005⟩
Precision Engineering, 2017, ⟨10.1016/j.precisioneng.2017.10.005⟩

In previous work, we showed that two degree of freedom oscillators can be advantageously applied to horological time bases since they can be used to eliminate the escapement mechanism. We subsequently examined planar two degree of freedom oscillators

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c61e4e4c578090e1ec1267b864b4f92
https://hal.archives-ouvertes.fr/hal-03511469

Refraction limit of miniaturized optical systems: a ball-lens example

Autor: Stefan Mühlig, Wilfried Noell, Toralf Scharf, Roland Bitterli, Reinhard Voelkel, Carsten Rockstuhl, Martin Fruhnert, Hans Peter Herzig, Min Suk Kim

Publikováno v: Optics Express, 24 (7), 6996-7005

We study experimentally and theoretically the electromagnetic field in amplitude and phase behind ball-lenses across a wide range of diameters, ranging from a millimeter scale down to a micrometer. Based on the observation, we study the transition be

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::22db1ab6394c02b3e1414d4ca429374c
https://doi.org/10.1364/oe.24.006996

Dynamically deformable micromirror array for defined laser beam shaping and homogenizing

Autor: Jonathan Masson, Nico F. de Rooij, A. Bich, Wilfried Noell, Kenneth J. Weible, Roland Bitterli, Reinhard Voelkel

Publikováno v: 16th International Conference on Optical MEMS and Nanophotonics.

We present a dynamic laser beam shaper than can generate smooth flat top and gaussian intensity profiles. It consists of a 100% fill factor membrane, supported by beams or posts, that deforms in a shape similar to a concave linear or 2D microlens arr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7bbb813c64c3a19bc3b57cd38bb33fd9
https://doi.org/10.1109/omems.2011.6031058

Deformable silicon membrane for dynamic linear laser beam diffuser

Autor: Wilfried Noell, Roland Bitterli, J. Masson, Reinhard Voelkel, Toralf Scharf, A. Bich, K. J. Weible, N. F. de Rooij, Hans Peter Herzig

Publikováno v: SPIE Proceedings.

We present a dynamic laser beam shaper based on MEMS technology. We show a prototype of a dynamic diffuser made of single crystal silicon. A linearly deformable silicon micromembrane is used to diffuse a laser beam in one dimension. Resonance frequen

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cae267a4b15d159ea00ebcab19320bec
https://doi.org/10.1117/12.842015

Randomly varying micro-optical elements for the generation of uniform intensity profiles in coherent laser sources

Autor: A. Bich, Roland Bitterli, K. J. Weible, Toralf Scharf, Martin Eisner, C. Dumouchel, S. Roth, Reinhard Völkel, W. Noell, P. Pernet

Publikováno v: SPIE Proceedings.

A wide range of lasers from the UV to the IR are selected based on their optical power and spectral characteristics to match the particular absorption behavior for the material to be processed. Periodic microlens arrays are often used as multi-apertu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ceee33302bd9cc6a873d0a64313683f0
https://doi.org/10.1117/12.795926