Zobrazeno 1 - 10
of 97
pro vyhledávání: '"Kurt Gibble"'
Autor:
Andrei Derevianko, Kurt Gibble, Leo Hollberg, Nathan R Newbury, Chris Oates, Marianna S Safronova, Laura C Sinclair, Nan Yu
Publikováno v:
Quantum Science and Technology. 7:044002
Recent advances in optical atomic clocks and optical time transfer have enabled new possibilities in precision metrology for both tests of fundamental physics and timing applications. Here we describe a space mission concept that would place a state-
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::48a790e601df962de61a90ed9caee25d
https://doi.org/10.1088/2058-9565/ac7df9
https://doi.org/10.1088/2058-9565/ac7df9
Autor:
Stefan Weyers, Burghard Lipphardt, Michael Kazda, Kurt Gibble, J. Rahm, G. Dobrev, Vladislav Gerginov
Publikováno v:
Metrologia. 55:789-805
Improvements of the systematic uncertainty, frequency instability, and long-term reliability of the two caesium fountain primary frequency standards CSF1 and CSF2 at PTB (Physikalisch-Technische Bundesanstalt) are described. We have further investiga
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e739a84386059d88bff3209a5596ac57
https://doi.org/10.1088/1681-7575/aae008
https://doi.org/10.1088/1681-7575/aae008
Publikováno v:
Physical Review Letters. 123
We experimentally and theoretically determine the magic wavelength of the (5$s^2$)$^{1}S_{0}$$-$(5$s$5$p$)$^{3}P_{0}$ clock transition of $^{111}$Cd to be 419.88(14) nm and 420.1(7) nm. To perform Lamb-Dicke spectroscopy of the clock transition, we u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3d80a7d4e7c36d0b28b2076b96c0469e
https://doi.org/10.1103/physrevlett.123.113201
https://doi.org/10.1103/physrevlett.123.113201
Publikováno v:
2019 Joint Conference of the IEEE International Frequency Control Symposium and European Frequency and Time Forum (EFTF/IFC).
Frequency shifts due to the microwave distributed cavity phase (DCP) have been evaluated for the NRC-FCs2 atomic fountain primary frequency standard of the National Research Council Canada. NRC-FCs2 utilizes a Ramsey microwave cavity designed to mini
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0296cd86a080aa8f5109b4adfecaa15c
https://doi.org/10.1109/fcs.2019.8856148
https://doi.org/10.1109/fcs.2019.8856148
Autor:
Marina Gertsvolf, Krzysztof Szymaniec, Kurt Gibble, Bin Jian, Rich Hendricks, Scott Beattie, John A. Alcock
Publikováno v:
2019 URSI Asia-Pacific Radio Science Conference (AP-RASC).
The National Research Council of Canada is finalizing the first evaluation of a new primary frequency standard, the NRC-FCs2 cesium fountain clock. The physics package for NRC-FCs2 was designed and built in collaboration with the National Physical La
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e8f3c2bb450a91d70271c1d24d4b81d3
https://doi.org/10.23919/ursiap-rasc.2019.8738741
https://doi.org/10.23919/ursiap-rasc.2019.8738741
Autor:
Ph. Laurent, P. Peterman, F. X. Esnaut, Didier Massonnet, Kurt Gibble, I. Moric, Thomas Leveque, Christophe Salomon, Ch. Delaroche, Michel Abgrall, O. Grosjean
Publikováno v:
Metrologia
Metrologia, IOP Publishing, 2020, 57 (5), pp.055005. ⟨10.1088/1681-7575/ab948b⟩
Metrologia, IOP Publishing, 2020, 57 (5), pp.055005. ⟨10.1088/1681-7575/ab948b⟩
The flight model of the laser cooled cesium atomic clock, PHARAO, has been qualified for operation in space. The clock has passed the vibration, thermal and electromagnetic compatibility tests required to fly in low Earth orbit (400 km). On ground, t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9d5f4c5b1365f3d440ac611848632d96
https://doi.org/10.1088/1681-7575/ab948b
https://doi.org/10.1088/1681-7575/ab948b
Autor:
B. Nagorny, J. Nawrocki, F. Ozimek, P. Dunst, Scott Beattie, Bin Jian, Richard Hendricks, Krzysztof Szymaniec, Kurt Gibble
Publikováno v:
IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 66(3)
We report on the design, assembly, testing, and delivery of a series of new cesium fountain primary frequency standards built through commercial and scientific collaboration with international users. The new design, based on proven National Physical
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::175a810f7b5a8a138afdacd3ba954863
https://pubmed.ncbi.nlm.nih.gov/30296222
https://pubmed.ncbi.nlm.nih.gov/30296222
Autor:
Taeg YongKwon, Sang-Bum Lee, Sangmin Lee, G. John Hartnett, Kurt Gibble, Myoung-Sun Heo, Sang EonPark, Hyun-Gue Hong
Publikováno v:
2018 IEEE International Frequency Control Symposium (IFCS).
We present the current status of the atomic fountain clock KRISS-F1 under development at KRISS. An ultrastable cryogenic sapphire oscillator (CSO) is used as a local oscillator of the fountain. The short-term stability measured with the CSO reaches $
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ecc5c5c22d167b15824cab92b564aad6
https://doi.org/10.1109/fcs.2018.8597485
https://doi.org/10.1109/fcs.2018.8597485
Autor:
A. JohnAlcock, Krzysztof Szymaniec, Kurt Gibble, Marina Gertsvolf, Bin Jian, Scott Beattie, Rich Hendricks
Publikováno v:
2018 IEEE International Frequency Control Symposium (IFCS).
At the National Research Council Canada we are currently performing the first accuracy evaluation of our newly developed caesium fountain clock, NRC-FCs2. This primary frequency standard operates with a short term stability of $\sigma_{\mathbf{y}}(\t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cc93fc1144ccc2b4737018e073b15fb3
https://doi.org/10.1109/fcs.2018.8597543
https://doi.org/10.1109/fcs.2018.8597543
Autor:
Daniel Schussheim, Kurt Gibble
Publikováno v:
Frontiers in Optics / Laser Science.
We use frequency doubling and summing to generate >1 W of 326 nm to laser cool cadmium. Other wavelengths, 361, 468, and 480 nm, are also generated from the high power fiber amplifier. We developed an FPGA controller to automatically lock the system.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1d7c46c91e58079e6bc539928e21007e
https://doi.org/10.1364/ls.2018.lth1f.2
https://doi.org/10.1364/ls.2018.lth1f.2