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Search Publications by: John Kitching (Fed)

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Displaying 176 - 200 of 225

Toward chip-scale atomic clocks

February 7, 2005
Author(s)
C. T-C. Nguyen, John Kitching
This paper describes work towards the use of integrated microelectromechanical systems (MEMS) technology to shrink atomic clocks from their present-day table-top sizes down to only one cubic-centimeter, while retaining exceptional timing stability on the

An Atomic Clock on a Chip

February 1, 2005
Author(s)
John E. Kitching
This article described recent research in the Time and Frequency Division at NIST to develop highly miniaturized atomic frequency references using microfabrication technologies. We discuss the overall physics package design, fabrication of individual

Microfabricated Atomic Clocks

January 30, 2005
Author(s)
John E. Kitching, Svenja A. Knappe, Li-Anne Liew, P Schwindt, V Shah, John Moreland, Leo W. Hollberg
We summarize the development of microfabricated atomic frequency references at NIST. The physics packages of these devices have volumes near 10 mm3, power dissipation below 150 mW and can potentially achieve a fractional frequency instability in the range

Microwave transitions and nonlinear magneto-optical rotation in anti-relaxation-coated cells

January 27, 2005
Author(s)
D Budker, Leo W. Hollberg, Derek F. Kimball, John E. Kitching, S Pustelny, V V. Yashchuk
Using laser optical pumping, widths and frequency shifts are determined for microwave transitions between ground-state hyperfine components of {8s}Rb and d{87}Rb atoms contained in vapor cells with alkane anti-relaxation coatings. The results are compared

-Chip scale atomic magnetometers,-

January 1, 2005
Author(s)
John Moreland, John Kitching, Peter D. Schwindt, Svenja A. Knappe, Li-Anne Liew, V Shah, Vladislav Gerginov, Ying-ju Wang, Leo W. Hollberg

Microfabricated Atomic Clocks

January 1, 2005
Author(s)
John E. Kitching, Svenja A. Knappe, Li-Anne Liew, P Schwindt, V Shah, John M. Moreland, Leo W. Hollberg
We describe recent progress at NIST in the development of compact, low-power atomic frequency references based on microfabrication processes. The physics packages of these frequency references have a volume near 10 cm 3, require less than 100 mW of power

Microwave Transitions and Nonlinear Magneto-Optical Rotation in Anti-Relaxation-Coated Cells

January 1, 2005
Author(s)
D Budker, Leo W. Hollberg, Derek F. Kimball, John Kitching, S Pustelny, V V. Yashchuk
Using laser optical pumping, widths and frequency shifts are determined for microwave transitions between ground-state hyperfine components of 8s}Rb and d87}Rb atoms contained in vapor cells with alkane anti-relaxation coatings. The results are compared

Chip-scale atomic magnetometer

December 27, 2004
Author(s)
P Schwindt, Svenja A. Knappe, V Shah, Leo W. Hollberg, John Kitching, Li-Anne Liew, John Moreland
Using the techniques of micro-electro-mechanical systems (MEMS), we have constructed a small, low-power magnetic sensor based on alkali atoms. By measuring the energy shift of the atoms' magnetic moment due to a magnetic field via a coherent population

Microfabricated Atomic Clocks at NIST

December 7, 2004
Author(s)
Svenja A. Knappe, P Schwindt, Vladislav Gerginov, V Shah, Leo W. Hollberg, John E. Kitching, Li-Anne Liew, John Moreland
In this paper we present the latest progress in the development, fabrication, and characterization of a microfabricated atomic frequency reference at NIST. With volumes below 10 mm3 the physics packages contain the complete integrated assembly for probing

Chip-Scale Atomic Magnetometers

December 1, 2004
Author(s)
P Schwindt, Svenja A. Knappe, V Shah, Leo W. Hollberg, John E. Kitching, Li-Anne Liew, John M. Moreland
Using the techniques of micro-electro-mechanical systems, we have constructed a small, low-power magnetic sensor based on alkali atoms. We use a coherent population trapping resonance to probe the interaction of the atoms' magnetic moment with a magnetic

High-contrast dark resonances in s+ -s- optical field

October 1, 2004
Author(s)
S. Kargapoltsev, John Kitching, Leo W. Hollberg, A. V. Taichenachev, V L. Velichanski, V. I. Yudin
For application to atomics clocks, it is important to have large amplitude and small width of the CPT resonance. In this paper, we show that the contrast and amplitude of the dark resonance can be significantly increased in a miniature buffer gas cell by

Power dissipation in a vertically integrated chip-scale atomic clock

August 24, 2004
Author(s)
John Kitching, Svenja A. Knappe, Li-Anne Liew, P Schwindt, V Shah, John Moreland, Leo W. Hollberg
The physics package of a vertically-integrated chip-scale atomic clock based on Cs has recently been demonstrated at NIST. This device requires 69 mW of electrical power to maintain the vapor cell 34 K above the temperature of the baseplate. The physics

Microfabricated Atomic Frequency References

August 23, 2004
Author(s)
Svenja A. Knappe, P Schwindt, V Shah, Leo W. Hollberg, John Kitching, Li-Anne Liew, John Moreland
We report on the fabrication of a physics package for a chip-scale atomic clock with a volume of 9.5 mm^3, consuming 75 m W of power. The design is described in detail and is strongly motivated by the goal of wafer-level fabrication and assembly. A

Microfabricated Atomic Frequency References

August 1, 2004
Author(s)
Svenja A. Knappe, P Schwindt, V Shah, Leo W. Hollberg, John E. Kitching, Li-Anne Liew, John M. Moreland
We describe a design for a microfabricated atomic frequency reference with a volume of several cubic millimetres and a power dissipation in the range ot tens of milliwatts. It is anticipated that this frequency reference will be capable of achieving a

Microfabricated alkali atom vapor cells

April 5, 2004
Author(s)
Li-Anne Liew, Svenja A. Knappe, John M. Moreland, Hugh Robinson, David C. Larbalestier, John Kitching
We describe the fabrication of chip-sized alkali atom vapor cells using silicon micromachining and anodic bonding technology. Such cells may find use in highly miniaturized atomic frequency references or magnetometers. The cells consist of cavities etched

Micromachined Alkali Atom Vapor Cells for Chip-Scale Atomic Clocks

January 30, 2004
Author(s)
Li-Anne Liew, Svenja A. Knappe, John M. Moreland, Hugh Robinson, Leo W. Hollberg, John Kitching
This paper describes the fabrication of chip-sized alkali atom vapor cells, for use in highly miniaturized atomic frequency references, using silicon micromachining and anodic bonding technology. The cells consist of silicon cavities with internal volume

A microfabricated atomic clock

January 1, 2004
Author(s)
Svenja A. Knappe, V Shah, Peter D. Schwindt, Leo W. Hollberg, John E. Kitching, Li-Anne Liew, John Moreland

Delivery of High Stability Optical and Microwave Frequency Standards Over an Optical Fiber Network

July 1, 2003
Author(s)
Jun Ye, J L. Peng, R J. Jones, K W. Holman, John L. Hall, D J. Jones, Scott A. Diddams, John E. Kitching, S Bize, James C. Bergquist, Leo W. Hollberg, Lennart Robertsson, L -. Ma
Optical and radio frequency standards located in JILA and NIST laboratories have been connected through a 6.9 km roundtrip optical fiber link. An optical frequency standard based on an Iodine stabilized Nd:YAG laser at 1064 nm with an instability of