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Physics Programs & Projects

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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

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

CODATA values of the fundamental constants
Last Updated Date: 04/29/2014

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

Quantum Physics Theory
Last Updated Date: 04/29/2014

Theoretical work relevant to the determination of values of the fundamental constants, tests of bound-state quantum electrodynamics (QED), and … more

International System of Units (SI)
Last Updated Date: 04/29/2014

The International System of Units (SI) provides definitions of units of measurement that are widely accepted in science and technology and which … more

Terahertz Bi-Directional Reflection Function Measurements for Homeland Security
Last Updated Date: 04/09/2014

Far-infrared (Terahertz or THz, 25 to 300 micron wavelength) femtosecond laser methods are employed to generate high power broadband pulses for … more

Test and Evaluation Protocols for ANSI/IEEE N42 Standards
Last Updated Date: 03/25/2014

The purpose of these test and evaluation protocols is to provide additional information to the published ANSI/IEEE N42 series for homeland … more

Single Photonics and Quantum Information
Last Updated Date: 03/24/2014

Quantum-based communication and measurement systems that use novel quantum states of light are being developed around the world. However, the … more

Optoelectrical Characterization of Nanostructured Photovoltaic Materials and Devices
Last Updated Date: 03/24/2014

Photovoltaics technology is usually categorized into three generations: 1) devices based on polysilicon; 2) devices based on thin-film direct … more

Evolution of Image Spatial Resolution
Last Updated Date: 12/26/2013

Measuring the through-plane water content in a hydrogen fuel cell is critical to understanding this complicated heat and mass transport … more

Laser Radiometry
Last Updated Date: 10/29/2013

Accurate characterization of optoelectronic equipment is important to applications such as optical telecommunications, medical devices, materials … more

ANSI N42.42 Standard
Last Updated Date: 10/29/2013

The purpose of the N42 data format is to facilitate manufacturer-independent transfer of information from radiation measurement instruments for … more

Detector metrology
Last Updated Date: 08/22/2013

High performance radiometers with selected optical detectors are being designed, characterized, and calibrated in the Optical Sensor Group for the … more

Hyperspectral Image Projector (HIP)
Last Updated Date: 08/02/2013

Detecting climate change with remote sensing instruments, providing state-of-the-art surveillance imagery for security and defense, or getting the … more

New Calibration Service for 14 MeV Neutron Generators
Last Updated Date: 07/30/2013

A new calibration service for 14 MeV neutron generators is being developed.   The calibrations may be done at NIST or at a customer site, by … more

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