Physics Programs & Projects

Photomultiplier tube (PMT) analysis with respect to PMT sensitivity and long-term stability using synchrotron radiation.

The well-known interaction of low-energy neutrons and 3 He produces a proton and a triton with 764 keV of kinetic energy shared between the two … more

To compare the calibration capabilities for the spectral responsivity in the vacuum-ultraviolet spectral region between 135 nm and 250 nm, PTB and … more

In 2004, the National Institute of Standards and Technology NIST established the ultraviolet spectral irradiance scale from 200 nm to 400 nm using … more

Transfer standard photodiodes may be purchased with a calibration in the range from 5 nm to 254 nm. Other detectors supplied by the customer may … more

NIST Stars is an Innovations in Measurement Science project to create a catalog of stars whose top-of-the-atmosphere spectral flux has an SI … more

SIRCUS is a reference facility for the calibration of detectors and radiometers for spectral irradiance responsivity and spectral radiance … more

The Sensor Science Division of NIST realizes and maintains the unit of optical power (watt) with the NIST reference cryogenic radiometer, Primary … more

Accurate measurements of the optical properties of materials in the infrared spectral range play an increasingly important role in the aerospace … more

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

America's future prosperity and security may rely in part on the exotic properties of quantum mechanics. Research on quantum information (QI) … more

STARR II is a facility for measuring reflectance and scattering of materials in the ultraviolet to short-wave infrared wavelength range (230 nm to … more

Quantum science and engineering has the potential to revolutionize 21st century technology in much the same way that lasers, electronics, and … more

We study how material properties, surface topography, and contaminants affect the distribution of light scattered from surfaces. Our aim is to … more

This program aims to develop standards, methods, and modeling for assessing the periodic structures using optical reflectance and transmittance … more