Improved short-term stability of optical frequency standards: approaching 1 Hz in 1 s with the Ca standard at 657 nm

被引：81

作者：

Oates, CW ^{[1
]}

Curtis, EA ^{[1
]}

Hollberg, L ^{[1
]}

机构：

[1] Natl Inst Stand & Technol, Div Time & Frequency, Boulder, CO 80303 USA

来源：

OPTICS LETTERS | 2000年 / 25卷 / 21期

关键词：

D O I：

10.1364/OL.25.001603

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

For a neutral Ca-40-based optical frequency standard we report a fractional frequency instability of 4 x 10(-15) in 1 s, which represents a fivefold improvement over existing atomic frequency standards. Using the technique of optical Borde-Ramsey spectroscopy with a sample of 10(7) trapped atoms, we have resolved linewidths as narrow as 200 Bz (FWHM). With colder atoms this system could potentially achieve an instability as low as 2 x 10(-16) in 1 s. Such low instabilities are important for frequency standards and precision tests of fundamental physics. OCIS codes: 300.6320, 140.3320, 020.7010.

引用

页码：1603 / 1605

页数：3

共 13 条

[1]

BARGER RL, 1979, APPL PHYS LETT, V34, P12

[2] ATOMIC INTERFEROMETRY WITH INTERNAL STATE LABELING [J].

BORDE, CJ .

PHYSICS LETTERS A, 1989, 140 (1-2) :10-12

[3]

Gubin M., 1999, Proceedings of the 1999 Joint Meeting of the European Frequency and Time Forum and the IEEE International Frequency Control Symposium (Cat. No.99CH36313), P710, DOI 10.1109/FREQ.1999.841403

[4] Stabilization and frequency measurement of the I2-stabilized Nd:YAG laser [J].

Hall, JL ;

Ma, LS ;

Taubman, M ;

Tiemann, B ;

Hong, FL ;

Pfister, O ;

Ye, J .

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 1999, 48 (02) :583-586

[5] QUANTUM PROJECTION NOISE - POPULATION FLUCTUATIONS IN 2-LEVEL SYSTEMS [J].

ITANO, WM ;

BERGQUIST, JC ;

BOLLINGER, JJ ;

GILLIGAN, JM ;

HEINZEN, DJ ;

MOORE, FL ;

RAIZEN, MG ;

WINELAND, DJ .

PHYSICAL REVIEW A, 1993, 47 (05) :3554-3570

[6] A diode-laser optical frequency standard based on laser-cooled Ca atoms: Sub-kilohertz spectroscopy by optical shelving detection [J].

Oates, CW ;

Bondu, F ;

Fox, RW ;

Hollberg, L .

EUROPEAN PHYSICAL JOURNAL D, 1999, 7 (03) :449-460

[7]

Prestage J. D., 1999, Proceedings of the 1999 Joint Meeting of the European Frequency and Time Forum and the IEEE International Frequency Control Symposium (Cat. No.99CH36313), P121, DOI 10.1109/FREQ.1999.840723

[8] The optical calcium frequency standard [J].

Riehle, F ;

Schnatz, H ;

Lipphardt, B ;

Zinner, G ;

Trebst, T ;

Helmcke, J .

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, 1999, 48 (02) :613-617

[9] Sub-kilohertz optical spectroscopy with a time domain atom interferometer [J].

Ruschewitz, F ;

Peng, JL ;

Hinderthur, H ;

Schaffrath, N ;

Sengstock, K ;

Ertmer, W .

PHYSICAL REVIEW LETTERS, 1998, 80 (15) :3173-3176

[10] Quantum projection noise in an atomic fountain: A high stability cesium frequency standard [J].

Santarelli, C ;

Laurent, P ;

Lemonde, P ;

Clairon, A ;

Mann, AG ;

Chang, S ;

Luiten, AN ;

Salomon, C .

PHYSICAL REVIEW LETTERS, 1999, 82 (23) :4619-4622

← 1 2 →