Projects/Programs

Displaying 1 - 24 of 24

CODATA values of the fundamental physical constants

Ongoing

Every four years, the Committee on Data for Science and Technology (CODATA) issues recommended values of the fundamental physical constants. The values are

Compact Cold Atom Instruments

Ongoing

Our research focuses on the development of novel sensing platforms using cold atomic gases and atomic beams. Laboratory-scale cold atom apparatuses provide some

Compact strontium optical clock with integrated photonics

Ongoing

We are developing a scalable infrastructure for strontium optical-lattice clocks based on integrated photonics. This research results in new technologies to

Compact Ultrastable Optical References

Ongoing

We develop ultrastable lasers with linewidth ~1Hz for compact and deployable platforms.

Cryogenic Photonic Interconnects

Ongoing

We develop electro-optical systems for photonic generation and delivery of micro- and millimeter-wave signals to superconducting circuit platforms.

Femtosecond-Laser Frequency Combs for Optical Clocks

Ongoing

We develop self-referenced mode-locked femtosecond lasers that function as the "gears" of optical clocks. The femtosecond laser clockwork is capable of phase

Field Programmable Gate Array (FPGA) Designs for Metrology

Ongoing

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

Frequency Comb Calibration of Astronomical Spectrographs

Ongoing

We have constructed portable frequency combs that have provided in situ calibration of astronomical spectrographs, to aid in the search for exo-planets.

Frequency Comb Spectroscopy

Ongoing

We use frequency combs based on ultrafast mode-locked lasers to perform precision spectroscopy in the near- and mid-infrared domains, for rapid, high

Frequency Measurement and Analysis Service (FMAS)

Ongoing

The NIST Frequency Measurement and Analysis Service (FMAS) makes it easy to measure and calibrate any quartz, rubidium, cesium, or hydrogen maser frequency

Indoor Localization and Tracking

Ongoing

This web page is simply a pointer to another page that covers the extensive research program in indoor localization and tracking at NIST.

Laser Stabilization and Coherence with Optical Resonators

Ongoing

Highly coherent lasers play an essential role in optical timekeeping.

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

Microfabricated Atomic Sensors

Ongoing

We combine novel concepts of atomic physics and advanced technology of microfabrication processes to develop miniaturized atomic devices which leverage atoms’

Microresonator Device Research

Ongoing

With micro-resonators (fabricated in house or by collaborators) we are developing microcombs, integrated reference cavities and low-noise laser sources. The

Optical Clock Atomic Structure and Theory

Ongoing

An atomic clock aims to realize the intrinsic ticking rate of an atom.

Optical and Microwave Waveform Synthesis

Ongoing

We use femtosecond-laser frequency combs to generate optical and microwave waveforms with unprecedented noise performance.

Optical Two-way Time-frequency Transfer

Ongoing

This project aims to develop techniques for precise time-frequency transfer across free-space to support future optical clock networks.

Phase and Amplitude Noise Calibration Services

Ongoing

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

Portable Optical Lattice Clock

Ongoing

Exploiting their very high precision, atomic clocks today are used extensively in demanding timekeeping applications.

Precision Measurement Grants Program

Ongoing

Since 1970, the National Institute of Standards and Technology (NIST) has awarded Precision Measurement Grants for significant research in the field of

Time Measurement and Analysis Service (TMAS)

Ongoing

The NIST Time Measurement and Analysis Service (TMAS) was designed to serve any organization that is required to maintain an accurate local time standard. The

Trapped Sr+ ion clock; a secondary realization of the SI second

Ongoing

NIST is constructing a high-uptime optical frequency reference based on a single trapped Sr + ion. The goal of this project is to provide long-term ≤ 1x10 -16

Computer-generated image showing a cross-shaped gold metal cutout on a red mount in between two metal posts, with an inset magnifying the cutout to show blue and yellow balls at the center.

Trapped Ion Optical Clocks

Ongoing

The pursuit of fundamental limits in frequency metrology has historically motivated the development of groundbreaking techniques such as laser cooling and spin

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