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Physics Programs & Projects

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Newtonian constant of gravitation international consortium
Last Updated Date: 09/15/2014

The Newtonian constant of gravitation G is one of the most fundamental constants of classical physics. Recent measurements of G are in … more

Three-Dimensional Nanometer Metrology
Last Updated Date: 09/15/2014

Three-dimensional measurements of nanometer-scale structures are of increasing importance for nanoscience and nanomanufacturing, including the … more

Quantum Sensors
Last Updated Date: 09/10/2014

The Quantum Sensors Project develops sensors based on quantum phenomena for spectroscopy, imaging, and other precision measurements for … more

NIST Standard Reference Simulation Website
Last Updated Date: 09/10/2014

The Standard Reference Simulation Website is an ongoing project whose aim is to provide well-documented simulation results for a variety of … more

Femtosecond Laser Frequency Combs for Optical Clocks
Last Updated Date: 08/14/2014

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

Yb Lattice Clock
Last Updated Date: 08/08/2014

Our Group is developing high stability, high accuracy optical atomic clocks based on thousands of Yb atoms confined to an optical lattice. Such … more

Spectrophotometry
Last Updated Date: 07/31/2014

Spectrophotometry is the quantitative measurement of the reflection or transmission properties of a material as a function of wavelength. While … more

Photometry
Last Updated Date: 07/15/2014

The purpose of photometry is to measure light in a way that takes the sensitivity of human visual system into account. While radiometry measures … more

Neutron Interferometry with Polarized Neutrons as an Additional Degree of Freedom
Last Updated Date: 07/15/2014

Our goal is to apply Quantum Information Processing techniques to improve neutron interferometry contrast by making our final measurement … more

Far-infrared Spectroscopy of Biomolecules
Last Updated Date: 07/11/2014

Far-infrared (or terahertz/THz, ca. 25 to 300 micron wavelength) femtosecond pulsed laser and Fourier-transform infrared methods are employed to … more

Hydrogen Generation in Di-Iron Hydrogenase Mimics
Last Updated Date: 07/11/2014

Discovery of novel materials to facilitate hydrogen gas production has prompted new avenues of research towards developing hydrogen as an … more

Photovoltaic Carrier Dynamics Measured by Time-Resolved Terahertz Spectroscopy
Last Updated Date: 07/11/2014

Far-infrared (or THz, 25 to 300 micron wavelength) femtosecond laser methods are employed to measure photovoltaic (PV) materials spectra and … more

State-resolved Biomolecular Spectroscopies
Last Updated Date: 07/03/2014

Sensitive and fully state resolved spectroscopic methods in the terahertz (THz) and ultraviolet (UV) regions are being developed to investigate … more

Molecular Imaging
Last Updated Date: 07/01/2014

Biophotonics is at the intersection of photonics and biology where light is used to image, detect, and manipulate biological materials. This … more

In Situ Measurement Techniques
Last Updated Date: 07/01/2014

Synthetic cell membrane constructs allow the simplification and complete control of a more complicated cellular system, as well as the … more

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