Wavefront shaping techniques in complex media
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- Category: Events
- Published on Thursday, 23 January 2020 07:54
[event] Waves in Complex Media Thematic School
From Theory to Practice
April 14th - 24th 2020
Les Houches, France (French Alps)
Organizing Committee: Sylvain Gigan (Laboratoire Kastler-Brossel), Nicolas Cherroret (Laboratoire Kastler-Brossel), Alexandre Aubry (Langevin Institute)
Link: here, PDF: here
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- Category: PhD offers
- Published on Monday, 16 December 2019 15:33
[job offer] PhD (or postdoc) position: Microscope Design for Deep Brain Imaging
Judkewitz Lab, Charité and Humboldt University, Berlin, Germany
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- Category: Events
- Published on Friday, 29 November 2019 15:50
[event] Control of Quantum and Classical Waves in Complex Media
February 17th - 20th 2020
Ein Gedi Hotel, Israel
Organizing Committee: Patrick Sebbah (Bar Ilan University, Israel), Yaron Bromberg (Hebrew University, Israel)
Link: here, PDF: here
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- Category: Spatial Lights Modulators (SLMs)
- Published on Friday, 15 November 2019 16:05
[tutorial] About mechanical stability using Vialux DMDs
We have been using DMDs from Vialux for a few years now, and I already published few posts about different effects that need to be taken into account when working with such devices (in particular aberrations and diffraction effects). One more trivial, but potentially troublesome, effect is due to vibrations, that come from the FPGA board and transmitted through the rigid flat cables. In this quick post, I show the damaging effect of vibrations and how to easily get rid of them, at least partially.
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- Category: Highlights
- Published on Thursday, 24 October 2019 12:00
All-fiber wavefront shaping by transmission matrix engineering [highlight]
[S. Resisi et al., Arxiv (2019)]
In the past 10 years, many applications were successfully demonstrated for wavefront shaping in multimode fibers, from endoscopic to telecommunications through optical tweezers. However, these techniques require to modulate the incident field using free space modulators. In the present paper, S. Resisi and co-authors introduce a new approach that relies on modulating the transmission matrix itself by applying changes that modify its boundary conditions. Using an all-fiber apparatus, focusing light at the distal end of the fiber and conversion between fiber modes is demonstrated. Since in this approach the number of degrees of control can be larger than the number of fiber modes, it allows simultaneous control over multiple inputs and multiple wavelengths.
