Publications

Displaying 1 - 6 of 6

Implementation of coherent detuning to suppress microwave leakage in cesium fountains at NIST

October 24, 2024

Author(s)

Gregory Hoth, Jeffrey Sherman, Vladislav Gerginov

A potential source of frequency bias in atomic fountains is due to atomic interactions with microwave fields outside of the resonant cavity used for Ramsey interrogation. The effects of microwave leakage can be suppressed by detuning the microwaves from

Progress towards accuracy evaluation of NIST-F4 Cesium fountain clock

October 24, 2024

Author(s)

Vladislav Gerginov, Gregory Hoth, Thomas Heavner, Jeffrey Sherman

This work presents preliminary results towards the evaluation of the NIST-F4 Cesium Primary Frequency Standard. We present measurements of NIST-F4 frequency instability and evaluation of some of its systematic frequency shifts and shift uncertainties.

Design and manufacture of a new microwave cavity assembly for use in cesium fountains at NIST

May 15, 2023

Author(s)

Gregory Hoth, Vladislav Gerginov, Kurt Gibble

A new microwave cavity assembly has been designed and fabricated for use in the primary frequency standards at the National Institute of Standards and Technology (NIST). We will describe the design of the cavity and present results from the manufacturing

NIST-F3, a cesium fountain frequency reference

January 24, 2023

Author(s)

Gregory Hoth, Alexander Radnaev, Peter Mitchell, Jeffrey Sherman, Vladislav Gerginov

A cesium fountain frequency reference known as NIST-F3 is under development at the National Institute of Standards and Technology (NIST). The fountain is intended to provide input for the NIST timescale and assist with evaluation of NIST's primary and

Initial Study of the distributed cavity phase shift for the new microwave cavities of Cs fountains at NIST

April 24, 2022

Author(s)

Gregory Hoth, Bijunath Patla, Neil Ashby, Vladislav Gerginov

The microwave cavities of NIST-F1, the cesium fountain primary frequency standard at the National Institute of Standards and Technology (NIST), have been replaced with a new design. The distributed cavity phase (DCP) bias of the new cavity must be

Initial study of the distributed cavity phase shift for the new microwave cavities of NIST F1

December 21, 2021

Author(s)

Gregory Hoth, Bijunath Patla, Neil Ashby, Vladislav Gerginov

We are in the process of re-evaluating NIST-F1, the cesium fountain primary frequency standard at the National Institute of Standards and Technology (NIST). Here, we describe an initial study of the frequency bias caused by the distributed cavity phase

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