Absolute frequency measurement of the  In+ 5s S0–5s5p P0 transition

Zanthier, J. von; Abel, Johann J.; Becker, Thomas E.; Fries, M.K.; Peik, E.; Walther, H.; Holzwarth, Ronald; Reichert, J.; Udem, Th.; Hänsch, Theodor W.; Nevsky, A.; Skvortsov, M. A.; Bagayev, S. N.

doi:10.1016/s0030-4018(99)00253-9

Cited by 42 publications

(18 citation statements)

References 21 publications

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“…The absolute frequency of the ll5In+ 1o -3P0 clock transition has been measured twice [7], [8]. In the last measurement, the frequency of the indium clock transition was 0-7803-8493-8/04/$20.00 ©2004 IEEE compared with the frequency of a methane-stabilized He-Ne laser at 3.39 tim [8], where the He-Ne laser had been calibrated against an atomic cesium fountain clock.…”

Section: Absolute Frequency Measurementmentioning

confidence: 99%

Single Indium Ion optical frequency Standard

Eichenseer

Nevsky

Okhapkin

et al. 2004

2004 Conference on Precision Electromagnetic Measurements

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Section: Absolute Frequency Measurementmentioning

confidence: 99%

Single Indium Ion optical frequency Standard

Eichenseer

Nevsky

Okhapkin

et al. 2004

2004 Conference on Precision Electromagnetic Measurements

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“…So far, the absolute frequency of the 115 In + 1 S 0 -3 P 0 clock transition has been measured twice [26,27]. In a first measurement, by means of a phase-coherent frequency chain, the frequency of the 1 S 0 -3 P 0 resonance was compared with a methane-stabilized He-Ne laser at 3.39 µm [28] and a Nd:YAG laser at 1064 nm whose second harmonic was locked to a hyperfine component of molecular iodine [29].…”

Section: Absolute Frequency Measurementsmentioning

confidence: 99%

“…11 [26] (essentially determined by the uncertainty of the iodine reference). This result represented an improvement in accuracy of more than three orders of magnitude compared with previous measurements of the line.…”

Section: Absolute Frequency Measurementsmentioning

confidence: 99%

An Optical Frequency Standard Basedon the Indium Ion

Eckle¹,

Eichenseer²,

Nevsky³

et al. 2004

Astrophysics, Clocks and Fundamental Constants

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“…• Alkali atoms have simple spectra and that is an advantage for both experiment [55,76,78,86,88] and theory [59,52]. Measurement of the fine structure of such a system as a test for the variations of α was proposed by Jungmann [87] (cf.…”

Section: Fine Structurementioning

confidence: 99%

Some possibilities for laboratory searches for variations of fundamental constants

Karshenboim¹

2000

Can. J. Phys.

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We consider different options for the search for possible variations of the fundamental constants. We give a brief overview of the results obtained with several methods. We discuss their advantages and disadvantages with respect to simultaneous variations of all constants in both time and space in the range 10 8 − 10 10 yr. We also suggest a few possibilities for the laboratory search. Particularly, we propose some experiments with the hyperfine structure of hydrogen, deuterium and ytterbium-171 and of some atoms with a small magnetic moment. Other suggestions are for some measurements of the fine structure associated with the ground state. Special attention is paid to the interpretation of the hfs measurements in terms of variations of the fundamental constants.

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Absolute frequency measurement of the In+ 5s S0–5s5p P0 transition

Cited by 42 publications

References 21 publications

Single Indium Ion optical frequency Standard

Single Indium Ion optical frequency Standard

An Optical Frequency Standard Basedon the Indium Ion

Some possibilities for laboratory searches for variations of fundamental constants

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