Zobrazeno 1 - 10
of 429
pro vyhledávání: '"Thomas, Südmeyer"'
Autor:
Alexandre Parriaux, Kenichi N. Komagata, Mathieu Bertrand, Valentin J. Wittwer, Jérôme Faist, Thomas Südmeyer
Publikováno v:
Advanced Photonics Research, Vol 5, Iss 10, Pp n/a-n/a (2024)
Frequency combs are powerful tools for many applications and high performances are achieved by stabilizing these lasers. For operation in the mid‐infrared, quantum cascade lasers (QCL) are ideal candidates as they present numerous advantages. Howev
Externí odkaz:
https://doaj.org/article/f029724fca044621b735bfe13a51688d
Autor:
Gar-Wing Truong, Lukas W. Perner, D. Michelle Bailey, Georg Winkler, Seth B. Cataño-Lopez, Valentin J. Wittwer, Thomas Südmeyer, Catherine Nguyen, David Follman, Adam J. Fleisher, Oliver H. Heckl, Garrett D. Cole
Publikováno v:
Nature Communications, Vol 14, Iss 1, Pp 1-8 (2023)
Abstract For trace gas sensing and precision spectroscopy, optical cavities incorporating low-loss mirrors are indispensable for path length and optical intensity enhancement. Optical interference coatings in the visible and near-infrared (NIR) spect
Externí odkaz:
https://doaj.org/article/f3e66698d2ca4f60924e9d7d2a2aff7c
Autor:
Kenichi N. Komagata, Alexandre Parriaux, Mathieu Bertrand, Johannes Hillbrand, Mattias Beck, Valentin J. Wittwer, Jérôme Faist, Thomas Südmeyer
Publikováno v:
APL Photonics, Vol 8, Iss 8, Pp 086110-086110-8 (2023)
We demonstrate the use of a low power near-infrared laser illuminating the front facet of a quantum cascade laser (QCL) as an optical actuator for the coherent control of a mid-infrared frequency comb. We show that with appropriate current control of
Externí odkaz:
https://doaj.org/article/2e2e9e229d654a849f457111aa73d8d0
Autor:
Laurent, Devenoges, Gianni, Di Domenico, André, Stefanov, Antoine, Jallageas, Jacques, Morel, Thomas, Südmeyer, Pierre, Thomann
We report the evaluation of the second order Zeeman shift in the continuous atomic fountain clock FoCS-2. Because of the continuous operation and of its geometrical constraints, the methods used in pulsed fountains are not applicable. We use here tim
Externí odkaz:
http://arxiv.org/abs/1608.07099
Autor:
Pierre Brochard, Benjamin Rudin, Florian Emaury, Valentin J. Wittwer, Stéphane Schilt, Thomas Südmeyer
Publikováno v:
Journal of the European Optical Society-Rapid Publications, Vol 16, Iss 1, Pp 1-5 (2020)
Abstract We present a detailed frequency noise analysis of a feedforward scheme used to faithfully transfer the spectral properties of an individual line of an optical frequency comb spectrum to a single-mode laser and in this way indirectly amplify
Externí odkaz:
https://doaj.org/article/8587df7024694dd4ba7447ba49fb24f5
Autor:
Erwan Lucas, Pierre Brochard, Romain Bouchand, Stéphane Schilt, Thomas Südmeyer, Tobias J. Kippenberg
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-8 (2020)
In order to satisfy a wide range of modern microwave applications, improved methods are needed to produce low-noise microwave signals. Here the authors demonstrate ultra-low noise microwave synthesis via optical frequency division using a transfer os
Externí odkaz:
https://doaj.org/article/73115ffc8e9848bc9a89eb0d09702a12
Autor:
Igor Stevanovic, Zoltán Balogh-Michels, Andreas Bächli, Valentin J. Wittwer, Thomas Südmeyer, Alexander Stuck, Thomas Gischkat
Publikováno v:
Applied Sciences, Vol 11, Iss 1, p 189 (2020)
Ion beam sputtered hafnia is a preferred high index coating material for laser applications. It exhibits a mostly amorphous structure and an adequate laser-induced damage (LIDT) threshold. In this work, we investigated the influence of an assisting i
Externí odkaz:
https://doaj.org/article/75d2b9161da2416aae3175468e306199
Autor:
Stéphane Schilt, Thomas Südmeyer
Publikováno v:
Applied Sciences, Vol 5, Iss 4, Pp 787-816 (2015)
Optical frequency combs have been revolutionizing many research areas and are finding a growing number of real-world applications. While initially dominated by Ti:Sapphire and fiber lasers, optical frequency combs from modelocked diode-pumped solid-s
Externí odkaz:
https://doaj.org/article/86c64e8aa1584fdaa506fa660d2b966e
Publikováno v:
Optics express. 30(17)
In this article we present a directly diode-pumped high-power Kerr-lens mode-locked Yb:CALGO bulk laser oscillator operating at 1-GHz repetition rate. We report on two laser configurations optimized for either highest average power or shortest pulse
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::e74c853755587cacc9a535663283724f
https://pubmed.ncbi.nlm.nih.gov/36242113
https://pubmed.ncbi.nlm.nih.gov/36242113
Autor:
Julian, Fischer, Jakub, Drs, François, Labaye, Norbert, Modsching, Michael, Müller, Valentin J, Wittwer, Thomas, Südmeyer
Publikováno v:
Optics express. 30(17)
We experimentally demonstrate an efficient and broadband extreme-ultraviolet light (XUV) out-coupling mechanism of intra-cavity generated high harmonics. The mechanism is based on a coated grazing-incidence plate (GIP), which utilizes the enhanced re
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::ecf7cb47ed4b2211598f84f8602900fa
https://pubmed.ncbi.nlm.nih.gov/36242190
https://pubmed.ncbi.nlm.nih.gov/36242190