Zobrazeno 1 - 10
of 173
pro vyhledávání: '"Kroker Stefanie"'
Publikováno v:
Journal of the European Optical Society-Rapid Publications, Vol 20, Iss 1, p 3 (2024)
In this work, we introduce a new bispectral optical cavity concept for which we design twin pairs of highly reflective, ultra-low noise metamirrors. Metasurfaces, artificial structures composed of periodic or quasi-periodic arrays of nanostructures,
Externí odkaz:
https://doaj.org/article/cba6d714846f44f889612e0cea821f97
We investigate the mechanical loss characteristics of Eu$^{3+}$:Y$_2$SiO$_5$$\unicode{x2013}$a promising candidate for ultra-low-noise frequency stabilization through the spectral hole burning technique. Three different mechanical oscillators with va
Externí odkaz:
http://arxiv.org/abs/2409.14126
Autor:
Wagner, Nico, Narożnik, Mateusz, Bober, Marcin, Sauer, Steffen, Zawada, Michał, Kroker, Stefanie
NEXCERA has been recently introduced as novel ceramic-based material for spacers of ultra-stable laser cavities with a zero-crossing coefficient of thermal expansion at room temperature. Brownian thermal noise currently limits the performance of thes
Externí odkaz:
http://arxiv.org/abs/2409.14120
Autor:
Dickmann Johannes, Shelling Neto Liam, Gaedtke Mika, Sauer Steffen, Nicolodi Daniele, Sterr Uwe, Kroker Stefanie
Publikováno v:
EPJ Web of Conferences, Vol 287, p 04019 (2023)
Interferometric experiments are often limited in sensitivity by the thermal noise of the mirrors. In particular, interferometric gravitational wave detectors and laser stabilization resonators can benefit from reduced mirror noise. We present results
Externí odkaz:
https://doaj.org/article/b55bae5cc5754b6db9a1d128956902e6
On-chip integrated metasurfaces for circular light polarization for trapped-ion quantum applications
Autor:
Sorokina Anastasiia, Gehrmann Pascal, Sauer Steffen, Grimpe Carl-Frederik, Du Guochun, Jordan Elena, Mehlstäubler Tanja, Kroker Stefanie
Publikováno v:
EPJ Web of Conferences, Vol 287, p 01017 (2023)
In order to accomplish more functional and efficient light routing on a chip, photonic integration is necessary. Particularly in quantum technologies, which require a high precision of operation, avoiding bulky optical arrangements is in high demand.
Externí odkaz:
https://doaj.org/article/21412da9a8e04efa89c55aab0df65640
Publikováno v:
EPJ Web of Conferences, Vol 287, p 04028 (2023)
Metasurfaces, the two-dimensional variant of metamaterials, manipulate light in unique ways, opening up a whole new world of optical functionalities, ranging from optical imaging to quantum optics. High reflectivities and tailored phase profiles coul
Externí odkaz:
https://doaj.org/article/acd075a2d16c4e41816b3396ea42cc55
Autor:
Sauer Steffen, Sorokina Anastasiia, Grimpe Carl-Frederik, Du Guochun, Gehrmann Pascal, Jordan Elena, Mehlstäubler Tanja, Kroker Stefanie
Publikováno v:
EPJ Web of Conferences, Vol 266, p 13032 (2022)
Ion traps are a promising platform for the realisation of high-performance quantum computers. To enable the future scalability of these systems, integrated photonic solutions for guiding and manipulating the laser light at chip level are a major step
Externí odkaz:
https://doaj.org/article/cfce4b4f9cd5439e9502592d74634df6
Publikováno v:
EPJ Web of Conferences, Vol 266, p 10007 (2022)
We realized an imaging Mueller matrix microscope for nanostructure characterization. For investigations on nanoform characterization via Mueller matrix images, we measured and simulated Mueller matrix images of specially designed nanostructures. As a
Externí odkaz:
https://doaj.org/article/d756ebb9533a4fc6994eddda09f973f3
Publikováno v:
EPJ Web of Conferences, Vol 238, p 06006 (2020)
We designed, realized, and characterised an imaging Mueller matrix ellipsometry setup for the pixelwise measurement of the Mueller matrices in microscope images. Our setup is capable of performing measurements in reflection as well as in transmission
Externí odkaz:
https://doaj.org/article/959ae206a0844629b9280acf4b96bb26
Publikováno v:
EPJ Web of Conferences, Vol 238, p 06004 (2020)
We report on a method for the characterization of optical absorption in semiconductors at photon energies below the bandgap energy. We use intensity dependent deflection spectroscopy to measure spatially resolved the optical absorption and to separat
Externí odkaz:
https://doaj.org/article/579f77b17b5e42fea06fb5c7e74bc58b