Absolute frequency measurements of the Hg+ and Ca optical clock transitions with a femtosecond laser

被引：231

作者：

Udem, T ^{[1
]}

Diddams, SA ^{[1
]}

Vogel, KR ^{[1
]}

Oates, CW ^{[1
]}

Curtis, EA ^{[1
]}

Lee, WD ^{[1
]}

Itano, WM ^{[1
]}

Drullinger, RE ^{[1
]}

Bergquist, JC ^{[1
]}

Hollberg, L ^{[1
]}

机构：

[1] Natl Inst Stand & Technol, Div Time & Frequency, Boulder, CO 80305 USA

来源：

PHYSICAL REVIEW LETTERS | 2001年 / 86卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.86.4996

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The frequency comb created by a femtosecond mode-looked laser and a microstructured fiber is used to phase coherently measure the frequencies of both the Hg+ and Ca optical standards with respect to the SI second. We find the transition frequencies to be f(Hg) = 1 064 721 609 899 143(10) Hz and fc, = 455 986 240 494 158(26) Hz. respectively. In addition to the unprecedented precision demonstrated here, this work is the precursor to all-optical atomic clocks based on the Hg+ and Ca standards. Furthermore, when combined with previous measurements, we find no time variations of these atomic frequencies within the uncertainties of /(partial derivativef(Ca)/partial derivativet)/f(Ca)/ less than or equal to 8 X 10(-14) yr(-1) and /(partial derivativef(Hg)/partial derivativet)/f(Hg)/ less than or equal to 30 X 10(-14) yr(-1).

引用

页码：4996 / 4999

页数：4

共 29 条

[1] Femtosecond Ti:sapphire ring laser with a 2-GHz repetition rate and its application in time-resolved spectroscopy [J].

Bartels, A ;

Dekorsy, T ;

Kurz, H .

OPTICS LETTERS, 1999, 24 (14) :996-998

[2] RECOILLESS OPTICAL-ABSORPTION AND DOPPLER SIDE-BAND OF A SINGLE TRAPPED ION [J].

BERGQUIST, JC ;

ITANO, WM ;

WINELAND, DJ .

PHYSICAL REVIEW A, 1987, 36 (01) :428-430

[3] Cs-based frequency measurement of a single, trapped ton transition in the visible region of the spectrum [J].

Bernard, JE ;

Madej, AA ;

Marmet, L ;

Whitford, BG ;

Siemsen, KJ ;

Cundy, S .

PHYSICAL REVIEW LETTERS, 1999, 82 (16) :3228-3231

[4]

DEHMELT H, 1975, B AM PHYS SOC, V20, P60

[5] Direct link between microwave and optical frequencies with a 300 THz femtosecond laser comb [J].

Diddams, SA ;

Jones, DJ ;

Ye, J ;

Cundiff, ST ;

Hall, JL ;

Ranka, JK ;

Windeler, RS ;

Holzwarth, R ;

Udem, T ;

Hänsch, TW .

PHYSICAL REVIEW LETTERS, 2000, 84 (22) :5102-5105

[6] Generation of 5-fs pulses and octave-spanning spectra directly from a Ti:sapphire laser [J].

Ell, R ;

Morgner, U ;

Kärtner, FX ;

Fujimoto, JG ;

Ippen, EP ;

Scheuer, V ;

Angelow, G ;

Tschudi, T ;

Lederer, MJ ;

Boiko, A ;

Luther-Davies, B .

OPTICS LETTERS, 2001, 26 (06) :373-375

[7] POLARIZATION SPECTROSCOPY WITH ULTRASHORT LIGHT-PULSES [J].

FERGUSON, AI ;

ECKSTEIN, JN ;

HANSCH, TW .

APPLIED PHYSICS, 1979, 18 (03) :257-260

[8] Optical frequency synthesizer for precision spectroscopy [J].

Holzwarth, R ;

Udem, T ;

Hänsch, TW ;

Knight, JC ;

Wadsworth, WJ ;

Russell, PSJ .

PHYSICAL REVIEW LETTERS, 2000, 85 (11) :2264-2267

[9] External-field shifts of the 199Hg+ optical frequency standard [J].

Itano, WM .

JOURNAL OF RESEARCH OF THE NATIONAL INSTITUTE OF STANDARDS AND TECHNOLOGY, 2000, 105 (06) :829-837

[10] Accuracy results from NISR-F1 laser-cooled cesium primary frequency standard [J].

Jefferts, SR ;

Meekhof, DM ;

Shirley, JH ;

Stepanovic, M ;

Parker, TE .

PROCEEDINGS OF THE 2000 IEEE/EIA INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM & EXHIBITION, 2000, :714-717

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