Time & frequency metrology

News and Updates

With Some Bumps, NIST Scientists Devise a Novel Way to Extend the Wavelength Range of Microcombs

June 5, 2024

Microcombs – chip-scale devices that generate and measure frequencies of light with exquisite accuracy – have transformed timekeeping and boosted optical

Jun Ye: A Timely Profile

June 26, 2023

Physicist Jun Ye has a knack for making every second count—literally. At JILA, a joint research institute of the University of Colorado and the National

New Tiny Atomic Beam Clock Could Bring Stable Timing to Places GPS Can’t Reach

June 21, 2023

A new type of miniature atomic clock could provide better timing over the span of weeks and months compared with current systems.

Projects and Programs

5 MHz Graph of phase noise vs. offset frequency showing NIST synthesized signal, Wenzel OXCO, and BVA oscilloquartz.

Low-Phase Noise Frequency Synthesis

Ongoing

Design and implementation of low-phase noise oscillators and synthesizers

Phase and Amplitude Noise Calibration Services

Ongoing

The group provides calibration services 77130C and 77140S for phase and amplitude noise measurements.

Measurement device for signals in the W band (75-110 GHz)

Phase and Amplitude Noise Metrology

Ongoing

We provide state-of-the-art phase and amplitude noise measurements for signals from RF to optical frequencies.

Field Programmable Gate Array (FPGA) Designs for Metrology

Ongoing

Our group is developing FPGA based digital phase noise measurement and control systems.

Publications

Dissemination of UTC(NIST) over 20 km of commercial optical fiber with active phase stabilization

May 2, 2024

Author(s)

Jacob VanArsdale, Matthew J. Deutch, Michael A. Lombardi, Glenn Nelson, Jeffrey Sherman, James Spicer, William Yates, Dylan Yost, Samuel Brewer

We demonstrate the transfer of a cesium frequency standard steered to UTC(NIST) over 20 km of dark telecom optical fiber. Our dissemination scheme uses an

Parametrically driven pure-Kerr dissipative solitons in a chip-integrated microcavity

March 14, 2024

Author(s)

Gregory Moille, Miriam Leonhardt, David Paligora, Nicolas Englebert, Francois Leo, Julien Fatome, Kartik Srinivasan, Miro Erkintalo

The discovery that externally-driven nonlinear optical resonators can sustain ultrashort pulses cor- responding to coherent optical frequency combs has enabled

Evaluating Common-View Time Transfer Using a Low-Cost Dual-Frequency GNSS Receiver

February 15, 2024

Author(s)

Aidan Montare, Andrew Novick, Jeffrey Sherman

Common-view time transfer can be performed using either single (L1) or dual (L1/L2) frequency global navigation satellite system (GNSS) signals. Using dual

Low-noise microwave generation with an air-gap optical reference cavity

January 30, 2024

Author(s)

Yifan Liu, Dahyeon Lee, Takuma Nakamura, Naijun Jin, Haotian Cheng, Megan Kelleher, Charles McLemore, Igor Kudelin, William Groman, Scott Diddams, Peter Rakich, Franklyn Quinlan

We demonstrate a high finesse, microfabricated mirror-based, air-gap cavity with volume less than 1 ml, constructed in an array, that can support low-noise

Time & frequency metrology

News and Updates

With Some Bumps, NIST Scientists Devise a Novel Way to Extend the Wavelength Range of Microcombs

Jun Ye: A Timely Profile

New Tiny Atomic Beam Clock Could Bring Stable Timing to Places GPS Can’t Reach

Projects and Programs

Low-Phase Noise Frequency Synthesis

Phase and Amplitude Noise Calibration Services

Phase and Amplitude Noise Metrology

Field Programmable Gate Array (FPGA) Designs for Metrology

Publications

Dissemination of UTC(NIST) over 20 km of commercial optical fiber with active phase stabilization

Parametrically driven pure-Kerr dissipative solitons in a chip-integrated microcavity

Evaluating Common-View Time Transfer Using a Low-Cost Dual-Frequency GNSS Receiver

Low-noise microwave generation with an air-gap optical reference cavity

Awards

2022 Breakthrough Prize in Fundamental Physics - Jun Ye

2020 W. G. Cady Award - Craig Nelson

2015 Allen V. Astin Award - David A. Howe, Craig Nelson, and Archita Hati

2013 W. G. Cady Award - David Howe