Zobrazeno 1 - 10
of 67
pro vyhledávání: '"P.T.H. Fisk"'
Autor:
H. Yukawa, M.A. Lawn, Y. Nakadan, Kuniyasu Imamura, Y. Shibuya, Ken Hagimoto, Li Zhigang, Mizuhiko Hosokawa, Noriyuki Kurihara, M. Imae, P.T.H. Fisk, Li Huanxin
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 50:559-562
A two-way satellite time and frequency transfer (TWSTFT) network in the Pacific Rim region is under construction to contribute to the calculation of the international atomic time (TAI). Four major time and frequency institutes in this region have bee
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c63997a3c4156f08387a386970056ee0
https://doi.org/10.1109/19.918191
https://doi.org/10.1109/19.918191
Publikováno v:
Applied Physics B Lasers and Optics. 60:519-527
A microwave frequency standard based on buffer gas-cooled171Yb+ ions confined in a linear Paul trap has been demonstrated in prototype form. The standard exhibits a fractional frequency instability characterised by an Allan deviation of σ(y(τ) = 2.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b6c75881d57ed930ed91953354c46db
https://doi.org/10.1007/bf01080930
https://doi.org/10.1007/bf01080930
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 44:113-116
A microwave frequency standard based on buffer-gas cooled /sup 171/Yb/sup +/ ions confined in a linear Paul trap has been demonstrated in prototype form. The standard exhibits a fractional frequency instability characterized by an Allan deviation /sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f28183ff06f15d983f55d7c5732e397c
https://doi.org/10.1109/19.377786
https://doi.org/10.1109/19.377786
Autor:
P.T.H. Fisk, Brian J. Orr, Daniel A. Shaddock, Magnus T. L. Hsu, Guido Aben, R. B. Warrington, M.J. Wouters, Yabai He, Kenneth Baldwin, Sascha Schediwy, Malcolm B. Gray, Jong H. Chow, Andre N. Luiten
Publikováno v:
Conference on Lasers and Electro-Optics 2012.
We present two optical fiber-based radio-frequency signal distribution systems based on analog and all-digital electronics. The achieved fractional frequency transfer stabilities are similar: ∼6×10−17 (over 104 s) for analog using a 20km fiber s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::c64d9d639b6fc5cac54549248d9d8ada
https://doi.org/10.1364/cleo_si.2012.cth4a.2
https://doi.org/10.1364/cleo_si.2012.cth4a.2
Publikováno v:
Applied Physics B Photophysics and Laser Chemistry. 57:287-291
We report laser cooling of trapped 171Yb+ ions. The ions are confined in a linear Paul trap. Temperatures below 1 K have been achieved, and evidence of a phase transition to a crystal-like state has been observed. The metastable 2 D 3/2 level is drai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aec61ca2df911c59f707946b50460d83
https://doi.org/10.1007/bf00325208
https://doi.org/10.1007/bf00325208
Publikováno v:
Journal of Modern Optics. 37:1839-1848
Realization of the analogues of optical components for the manipulation of atomic de Broglie waves has recently become possible through the use of laser-based techniques. The strong fields generated by laser light have already been used to reflect at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::952f7915063543af41312de21553d607
https://doi.org/10.1080/09500349014552041
https://doi.org/10.1080/09500349014552041
Publikováno v:
2007 IEEE International Frequency Control Symposium Joint with the 21st European Frequency and Time Forum.
Microwave frequency standards based on the 12.6 GHz ground state hyperfine transition in 171Yb+ have been under development at the National Measurement Institute, Australia, for many years. Using a laser-cooled ion cloud, the transition frequency was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bf18c9c162b87defeca2e89feff41a19
https://doi.org/10.1109/freq.2007.4319145
https://doi.org/10.1109/freq.2007.4319145
Autor:
M.A. Lawn, Andre N. Luiten, Eugene Ivanov, Giorgio Santarelli, Patrick D. Wolf, R. B. Warrington, Sébastien Bize, M.J. Wouters, Clayton R. Locke, P. Guillemot, Michael E. Tobar, Paul L. Stanwix, John G. Hartnett, André Clairon, P.T.H. Fisk
Publikováno v:
IEEE transactions on ultrasonics, ferroelectrics, and frequency control. 53(12)
Cryogenic Sapphire Oscillators (CSO) developed at UWA have now been in operation around the world continuously for many years. Such oscillators, due to their excellent spectral purity are essential for interrogating atomic frequency standards at the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9464a2a791e19e5d436c5cc1ec81dab4
https://pubmed.ncbi.nlm.nih.gov/17186921
https://pubmed.ncbi.nlm.nih.gov/17186921
Publikováno v:
Proceedings of the 2005 IEEE International Frequency Control Symposium and Exposition, 2005..
Microwave frequency standards based on the 12.6 GHz ground state hyperfine transition in 171Yb+ have been under development at the National Measurement Institute, Australia, for many years. Using a laser-cooled ion cloud, the transition frequency was
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8e6d26c6ad2220d0f070a83bc0c71725
https://doi.org/10.1109/freq.2005.1574004
https://doi.org/10.1109/freq.2005.1574004
Publikováno v:
Proceedings of the 2005 IEEE International Frequency Control Symposium and Exposition, 2005..
The National Measurement Institute, Australia, (NMIA) is continuing the development of reliable, high-integrity and remotely-operable GPS-based systems for precise time and frequency transfer. These systems combine an OEM receiver with a PC and suppo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa3352b610e584564cee53cbf92897d4
https://doi.org/10.1109/freq.2005.1573934
https://doi.org/10.1109/freq.2005.1573934