Zobrazeno 1 - 10
of 205
pro vyhledávání: '"Ramona Eberhardt"'
Autor:
Mostafa Peysokhan, Saeid Rostami, Esmaeil Mobini, Alexander R. Albrecht, Stefan Kuhn, Sigrun Hein, Christian Hupel, Johannes Nold, Nicoletta Haarlammert, Thomas Schreiber, Ramona Eberhardt, Angel Flores, Andreas Tünnermann, Mansoor Sheik-Bahae, Arash Mafi
Publikováno v:
ACS Omega, Vol 6, Iss 12, Pp 8376-8381 (2021)
Externí odkaz:
https://doaj.org/article/32fdf09cf7a74546a12e2e87b3a39f19
Autor:
Pol Ribes-Pleguezuelo, Denis Guilhot, Marta Gilaberte Basset, Erik Beckert, Ramona Eberhardt, Andreas Tünnermann
Publikováno v:
Instruments, Vol 3, Iss 2, p 25 (2019)
1960 is the birth year of both the laser and the Mars exploration missions. Eleven years passed before the first successful landing on Mars, and another six before the first rover could explore the planet’s surface. In 2011, both technologies were
Externí odkaz:
https://doaj.org/article/fdf1d1684ec54c80a83f659464de2255
Autor:
Paul Böttner, Thomas Peschel, Aoife Brady, Daniel Heinig, Matthias Goy, Ramona Eberhardt, Stefan Nolte
We report on an opto-mechanical metal mirror design for highly dynamic, diffraction-limited focus shifting. Here, the mechanical geometry of the membrane is of crucial interest as it must provide sufficient optical performance to allow for diffractio
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::75ec0e6b0e113f6a0ee52e30cd2050b8
https://publica.fraunhofer.de/handle/publica/443100
https://publica.fraunhofer.de/handle/publica/443100
Autor:
Nicoletta Haarlammert, Angel Flores, Saeid Rostami, Thomas Schreiber, Andreas Tünnermann, Arash Mafi, Alexander R. Albrecht, Christian Hupel, Esmaeil Mobini, Ramona Eberhardt, Sigrun Hein, Mansoor Sheik-Bahae, Mostafa Peysokhan, Johannes Nold, Stefan Kuhn
Publikováno v:
Photonic Heat Engines: Science and Applications III.
Anti-Stokes fluorescence cooling of a Yb-doped silica glass optical fiber preform is achieved using a high-power laser in a double-pass configuration. The coherent laser beam illuminates the silica glass preform in the red tail of its absorption spec
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e0da8e81c4cacd0fadb61dbaadbcf03
https://doi.org/10.1117/12.2579925
https://doi.org/10.1117/12.2579925
Autor:
Stefan Kuhn, Angel Flores, Christian Hupel, Mostafa Peysokhan, Saeid Rostami, Nicoletta Haarlammert, Mansoor Sheik-Bahae, Ramona Eberhardt, Alexander R. Albrecht, Thomas Schreiber, Arash Mafi, Sigrun Hein, Johannes Nold, Esmaeil Mobini, Andreas Tünnermann
Publikováno v:
ACS Omega
ACS Omega, Vol 6, Iss 12, Pp 8376-8381 (2021)
ACS Omega, Vol 6, Iss 12, Pp 8376-8381 (2021)
Laser cooling of a solid is achieved when a coherent laser illuminates the material, and the heat is extracted by annihilation of phonons resulting in anti-Stokes fluorescence. Over the past year, net solid-state laser cooling was successfully demons
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::37e618e46fcb71c16f2e12ac71e6dd7c
https://publica.fraunhofer.de/handle/publica/267837
https://publica.fraunhofer.de/handle/publica/267837
Autor:
Andreas Tünnermann, Till Walbaum, Matthias Heinzig, Gonzalo Palma-Vega, Thomas Schreiber, Ramona Eberhardt
Publikováno v:
Optics letters. 45(10)
In this contribution, we report high-power Raman frequency downconversion based on an Yb-doped fiber amplifier and a linear external diamond Raman cavity. A maximum output power of 136 W with nearly diffraction-limited beam quality was achieved by pu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48ecf5efe38780bbae04c206d7e06165
https://pubmed.ncbi.nlm.nih.gov/32412496
https://pubmed.ncbi.nlm.nih.gov/32412496
Autor:
Alexander R. Albrecht, Stefan Kuhn, Esmaeil Mobini, Saeid Rostami, Arash Mafi, Andreas Tünnermann, Ramona Eberhardt, Nicoletta Haarlammert, Sigrun Hein, Christian Hupel, Mostafa Peysokhan, Johannes Nold, Mansoor Sheik-Bahae, Thomas Schreiber
Publikováno v:
Photonic Heat Engines: Science and Applications II.
We report the observation of anti-Stokes fluorescence cooling of Yb-doped silica glass by 0.7 degrees Celsius. We conduct a detailed investigation of the cooling parameters of this glass, including the wavelength dependence of the cooling efficiency
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::307aae533edcd424ea15095aa3f10336
https://doi.org/10.1117/12.2545233
https://doi.org/10.1117/12.2545233
Autor:
Mariia Kepper, Andreas Tünnermann, Erik Beckert, Isabelle Toubhans, Ramona Eberhardt, Francis Descours, Marcel Hornaff, Eddie Prevost
Publikováno v:
Photonic Instrumentation Engineering VII.
A laser based soldering technique – Solderjet Bumping – using liquid solder droplets in a flux-free process with localized thermal impact demonstrates the all inorganic, adhesive free attachment of optical components and support structures made o
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7b285f1eec68ef924dd1c6f6bdc07416
https://doi.org/10.1117/12.2543679
https://doi.org/10.1117/12.2543679
Autor:
Gerhard Heinzel, S M Köhlenbeck, Ramona Eberhardt, Jonathan J. Carter, Oliver Gerberding, Pascal Birckigt
Publikováno v:
2020 IEEE International Symposium on Inertial Sensors and Systems (INERTIAL).
In order to achieve the excellent seismic isolation necessary for the operation of gravitational wave detectors, very sensitive inertial sensors are required to measure and counteract the motion of the ground. This paper presents work on a lightweigh
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::25dab7de060f6683699ba761f83816b9
https://doi.org/10.1109/inertial48129.2020.9090085
https://doi.org/10.1109/inertial48129.2020.9090085
Autor:
Nicoletta Haarlammert, Victor Distler, Till Walbaum, Thomas Schreiber, Steffen Schulze, Stefan Kuhn, Maximilian Strecker, Christian Hupel, Denny Häßner, Sigrun Hein, Johannes Nold, Ramona Eberhardt, Andreas Tünnermann, Friedrich Möller, Gonzalo Palma-Vega
Publikováno v:
Fiber Lasers XVII: Technology and Systems.
Nonlinear effects and transverse mode instabilities (TMI) limit power scaling of single-mode fiber lasers. To overcome these limitations not only the fiber design but also laser relevant properties of the actively doped material itself need to be opt
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6c07252fd5d04312e87f0923449c5d41
https://doi.org/10.1117/12.2546714
https://doi.org/10.1117/12.2546714