Zobrazeno 1 - 10
of 175
pro vyhledávání: '"Uwe Sterr"'
Autor:
Jialiang Yu, Sebastian Häfner, Thomas Legero, Sofia Herbers, Daniele Nicolodi, Chun Yu Ma, Fritz Riehle, Uwe Sterr, Dhruv Kedar, John M. Robinson, Eric Oelker, Jun Ye
Publikováno v:
Physical Review X, Vol 13, Iss 4, p 041002 (2023)
Thermodynamically induced length fluctuations of high-reflectivity mirror coatings put a fundamental limit on sensitivity and stability of precision optical interferometers like gravitational-wave detectors and ultrastable lasers. The main contributi
Externí odkaz:
https://doaj.org/article/13d900125e514b71ac2ed52c83c3bb98
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-10 (2020)
Optical atomic clocks are useful tools for frequency metrology. Here the authors explore the stability of the atomic clocks and the role of the spin squeezed states for the noise reduction in these clocks.
Externí odkaz:
https://doaj.org/article/adcde1e57cea4df0861f37396f4292cb
Autor:
Stephan Falke, Nathan Lemke, Christian Grebing, Burghard Lipphardt, Stefan Weyers, Vladislav Gerginov, Nils Huntemann, Christian Hagemann, Ali Al-Masoudi, Sebastian Häfner, Stefan Vogt, Uwe Sterr, Christian Lisdat
Publikováno v:
New Journal of Physics, Vol 16, Iss 7, p 073023 (2014)
We have measured the absolute frequency of the optical lattice clock based on ^87 Sr at PTB with an uncertainty of $3.9\times {{10}^{-16}}$ using two caesium fountain clocks. This is close to the accuracy of todayʼs best realizations of the SI secon
Externí odkaz:
https://doaj.org/article/ae9588aabb2c45838a6917f6fd5c51ea
Autor:
Sofia, Herbers, Sebastian, Häfner, Sören, Dörscher, Tim, Lücke, Uwe, Sterr, Christian, Lisdat
Publikováno v:
Optics letters. 47(20)
We present a transportable ultra-stable clock laser system based on a Fabry-Perot cavity with crystalline Al
Autor:
Uwe Sterr, Fritz Riehle, Daniele Nicolodi, Thomas Legero, Jialiang Yu, Jun Ye, John Robinson, William Milner, Eric Oelker, Dhruv Kedar, Alexander Staron
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e62b0ac653a873abd92a9cd108b78145
https://doi.org/10.26226/m.6275705f66d5dcf63a311750
https://doi.org/10.26226/m.6275705f66d5dcf63a311750
Publikováno v:
2022 Joint Conference of the European Frequency and Time Forum and IEEE International Frequency Control Symposium (EFTF/IFCS).
Autor:
Ali Al-Masoudi, Roman Schwarz, Uwe Sterr, Christian Lisdat, S. Dörscher, Richard Hobson, M. Bober
Publikováno v:
Communications Physics, Vol 3, Iss 1, Pp 1-9 (2020)
The frequency stability of many optical atomic clocks is limited by the coherence of their local oscillator. Here, we present a measurement protocol that overcomes the laser coherence limit. It relies on engineered dynamical decoupling of laser phase
Active optical frequency standards provide interesting alternatives to their passive counterparts. Particularly, such a clock alone continuously generates highly-stable narrow-line laser radiation. Thus a local oscillator is not required to keep the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::86f4cfcbe5fddaa75d7aa1768c2bbe59
https://doi.org/10.48550/arxiv.2205.14130
https://doi.org/10.48550/arxiv.2205.14130
Autor:
John M, Robinson, Eric, Oelker, William R, Milner, Dhruv, Kedar, Wei, Zhang, Thomas, Legero, Dan G, Matei, Sebastian, Häfner, Fritz, Riehle, Uwe, Sterr, Jun, Ye
Publikováno v:
Optics letters. 46(3)
Mechanical loss of dielectric mirror coatings sets fundamental limits for both gravitational wave detectors and cavity-stabilized optical local oscillators for atomic clocks. Two approaches are used to determine the mechanical loss: ringdown measurem
We present a compact iodine-stabilized laser system at 633 nm, based on a distributed-feedback laser diode. Within a footprint of $27\times 15$ cm$^2$ the system provides 5 mW of frequency stabilized light from a single-mode fiber. Its performance wa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::caafc6f5c9743087821699054589d359
http://arxiv.org/abs/2011.02748
http://arxiv.org/abs/2011.02748