The Experts below are selected from a list of 10593 Experts worldwide ranked by ideXlab platform
Scott A Diddams - One of the best experts on this subject based on the ideXlab platform.
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The absolute frequency of the 87 Sr optical clock transition
Metrologia, 2008Co-Authors: Gretchen K. Campbell, Andrew D. Ludlow, Martin M. Boyd, Tanya Zelevinsky, Sebastian Blatt, Jan Thomsen, Michael J. Martin, Marcio H. G. De Miranda, Scott A DiddamsAbstract:The absolute frequency of the 1 S0– 3 P0 clock transition of 87 Sr has been measured to be 429 228 004 229 873.65 (37) Hz using lattice-confined atoms, where the fractional uncertainty of 8.6 × 10 −16 represents one of the most accurate measurements of an atomic transition frequency to date. After a detailed study of systematic effects, which reduced the total systematic uncertainty of the Sr lattice clock to 1.5 × 10 −16 , the clock frequency is measured against a hydrogen maser which is simultaneously calibrated to the US primary frequency standard, the NIST Cs fountain clock, NIST-F1. The comparison is made possible using a femtosecond laser based optical frequency comb to phase coherently connect the optical and microwave spectral regions and by a 3.5 km Fibre Transfer scheme to compare the remotely located clock signals. (Some figures in this article are in colour only in the electronic version)
Gretchen K. Campbell - One of the best experts on this subject based on the ideXlab platform.
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The absolute frequency of the 87 Sr optical clock transition
Metrologia, 2008Co-Authors: Gretchen K. Campbell, Andrew D. Ludlow, Martin M. Boyd, Tanya Zelevinsky, Sebastian Blatt, Jan Thomsen, Michael J. Martin, Marcio H. G. De Miranda, Scott A DiddamsAbstract:The absolute frequency of the 1 S0– 3 P0 clock transition of 87 Sr has been measured to be 429 228 004 229 873.65 (37) Hz using lattice-confined atoms, where the fractional uncertainty of 8.6 × 10 −16 represents one of the most accurate measurements of an atomic transition frequency to date. After a detailed study of systematic effects, which reduced the total systematic uncertainty of the Sr lattice clock to 1.5 × 10 −16 , the clock frequency is measured against a hydrogen maser which is simultaneously calibrated to the US primary frequency standard, the NIST Cs fountain clock, NIST-F1. The comparison is made possible using a femtosecond laser based optical frequency comb to phase coherently connect the optical and microwave spectral regions and by a 3.5 km Fibre Transfer scheme to compare the remotely located clock signals. (Some figures in this article are in colour only in the electronic version)
Marcio H. G. De Miranda - One of the best experts on this subject based on the ideXlab platform.
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The absolute frequency of the 87 Sr optical clock transition
Metrologia, 2008Co-Authors: Gretchen K. Campbell, Andrew D. Ludlow, Martin M. Boyd, Tanya Zelevinsky, Sebastian Blatt, Jan Thomsen, Michael J. Martin, Marcio H. G. De Miranda, Scott A DiddamsAbstract:The absolute frequency of the 1 S0– 3 P0 clock transition of 87 Sr has been measured to be 429 228 004 229 873.65 (37) Hz using lattice-confined atoms, where the fractional uncertainty of 8.6 × 10 −16 represents one of the most accurate measurements of an atomic transition frequency to date. After a detailed study of systematic effects, which reduced the total systematic uncertainty of the Sr lattice clock to 1.5 × 10 −16 , the clock frequency is measured against a hydrogen maser which is simultaneously calibrated to the US primary frequency standard, the NIST Cs fountain clock, NIST-F1. The comparison is made possible using a femtosecond laser based optical frequency comb to phase coherently connect the optical and microwave spectral regions and by a 3.5 km Fibre Transfer scheme to compare the remotely located clock signals. (Some figures in this article are in colour only in the electronic version)
Michael J. Martin - One of the best experts on this subject based on the ideXlab platform.
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The absolute frequency of the 87 Sr optical clock transition
Metrologia, 2008Co-Authors: Gretchen K. Campbell, Andrew D. Ludlow, Martin M. Boyd, Tanya Zelevinsky, Sebastian Blatt, Jan Thomsen, Michael J. Martin, Marcio H. G. De Miranda, Scott A DiddamsAbstract:The absolute frequency of the 1 S0– 3 P0 clock transition of 87 Sr has been measured to be 429 228 004 229 873.65 (37) Hz using lattice-confined atoms, where the fractional uncertainty of 8.6 × 10 −16 represents one of the most accurate measurements of an atomic transition frequency to date. After a detailed study of systematic effects, which reduced the total systematic uncertainty of the Sr lattice clock to 1.5 × 10 −16 , the clock frequency is measured against a hydrogen maser which is simultaneously calibrated to the US primary frequency standard, the NIST Cs fountain clock, NIST-F1. The comparison is made possible using a femtosecond laser based optical frequency comb to phase coherently connect the optical and microwave spectral regions and by a 3.5 km Fibre Transfer scheme to compare the remotely located clock signals. (Some figures in this article are in colour only in the electronic version)
Jan Thomsen - One of the best experts on this subject based on the ideXlab platform.
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The absolute frequency of the 87 Sr optical clock transition
Metrologia, 2008Co-Authors: Gretchen K. Campbell, Andrew D. Ludlow, Martin M. Boyd, Tanya Zelevinsky, Sebastian Blatt, Jan Thomsen, Michael J. Martin, Marcio H. G. De Miranda, Scott A DiddamsAbstract:The absolute frequency of the 1 S0– 3 P0 clock transition of 87 Sr has been measured to be 429 228 004 229 873.65 (37) Hz using lattice-confined atoms, where the fractional uncertainty of 8.6 × 10 −16 represents one of the most accurate measurements of an atomic transition frequency to date. After a detailed study of systematic effects, which reduced the total systematic uncertainty of the Sr lattice clock to 1.5 × 10 −16 , the clock frequency is measured against a hydrogen maser which is simultaneously calibrated to the US primary frequency standard, the NIST Cs fountain clock, NIST-F1. The comparison is made possible using a femtosecond laser based optical frequency comb to phase coherently connect the optical and microwave spectral regions and by a 3.5 km Fibre Transfer scheme to compare the remotely located clock signals. (Some figures in this article are in colour only in the electronic version)