Projects/Programs

Displaying 1 - 25 of 58

Advanced Materials: Elemental and Chemical Analysis of Microstructured Materials

Ongoing

Electron, ion and photon-based microanalysis methods, instrumentation and protocols are developed to advance measurement science towards the elemental and

Analysis and Modeling of Atmospheric Particles to Assess Effects on Climate

Ongoing

Atmospheric aerosol particles often have compositions and shapes that cannot be described as a single material phase within a simplified geometric form such as

Argon mini-arc meets its match: Use of a laser-driven plasma source in ultraviolet-detector calibrations

Ongoing

The National Institute of Standards and Technology operates two spectral comparator facilities, both of which are used to provide detector calibrations from the

Bilateral Comparison of Spectral Responsivity in the Vacuum-Ultraviolet

Completed

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

Building the next generation reference reflectometer

Ongoing

ROSI (Robotic Optical Scattering Instrument) is a new facility for measuring reflectance and scattering of materials in the ultraviolet to short-wave infrared

Calculation of optical constants and dielectric response

Ongoing

We maintain a suite of programs that can help calculate the optical properties of many solids throughout the electromagnetic spectrum.

Calibration of the Extreme UV/X-ray Irradiance Sensor (EXIS) for the Geostationary Operations Environment Satellite R-Series Program (GOES-R)

Ongoing

Calibrations of the The Extreme ultraviolet/X-ray Irradiance Sensor (EXIS), which will be installed on the Geostationary Operations Environment Satellite R

Calibration of Space Weather Observational Instruments at NIST

Ongoing

Satellite and rocket instruments for solar ultraviolet and extreme-ultraviolet observation are calibrated using synchrotron radiation at SURF III.

Color and appearance

Ongoing

We are developing instrumentation, standards artifacts, and measurement protocols to characterize appearance attributes including color, texture, and gloss

Comparison of Synchrotron Radiation-Based Ultraviolet Source Calibrations at PTB and NIST

Completed

Bilateral comparison of synchrotron radiation-based deuterium lamp calibrations between the Physikalisch-Technische Bundesanstalt PTB and NIST.

Degradation of extreme-ultraviolet optics

Ongoing

Optical systems that operate at wavelengths in the ultraviolet (UV) and extreme-ultraviolet (EUV) are susceptible to degradation by a number of different

Designing the Nanoworld: Nanostructure, Nanodevices, and Nano-optics

Ongoing

Nano and atomic scale theory of the electronic, optical and mechanical properties of ultrasmall structures, such as semiconductor quantum dots and dopants in Si

Detector-based color scale

Ongoing

Until recently calibrations of tristimulus colorimeters were performed against lamp standards. However, the uncertainty of these source-based calibrations

Figure 1. Class of optical setup considered in this work. The aperture can be limiting (as shown in this case) or nonlimiting.

Diffraction effects in radiometry

Ongoing

We want to quantify the breakdown of geometrical optics when computing the throughput of optical systems for the purpose of calculating "diffraction corrections

Earth Energy Budget

Ongoing

The goal of this project is to extend and improve the measurements of the key climate record of the long-term balance between Earth absorption of solar energy

EUV Zone Plates for Compact Solar Radiometer

Ongoing

This project is developing zone plate technology to enable compact solar radiometers for observing the solar 30.4-nm emission from ionized helium in the

Extreme Ultraviolet Detector Calibration Service

Ongoing

The extreme ultraviolet detector (EUVD) calibration service disseminates the U.S. national scale of detector responsivity in the wavelength range from 5 nm to

Extreme ultraviolet optical constants

Ongoing

In the vacuum ultraviolet and extreme ultraviolet (EUV), the indices of refraction of all materials become complex: N = n + ik, or N = 1- d + ik. Here, n is the

A high-finesse Fabry-Perot interferometer

Fabry-Perot Displacement Interferometry

Ongoing

High-resolution Fabry-Perot interferometry is being developed and employed for demanding applications in mechanical displacement metrology.

Fiber-optic Frequency Comb Development

Ongoing

To support comb-based measurements outside the metrology laboratory, we develop high performance, robust frequency combs based on fiber-optic technology.

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 Conversion Interfaces for Photonic Quantum Systems

Ongoing

Optical frequency conversion, in which the color of light is changed, is a process that has numerous applications in physics and technology. For example, green

Frequency-comb-based Spectroscopy (Dual-Comb Spectroscopy)

Ongoing

Dual-comb spectroscopy is a technique that allows one to exploit the coherence, accuracy, and resolution of frequency combs for precision molecular spectroscopy

Fundamentals of Deformation

Ongoing

This project provides new measurement methods, property data and simulations for areas critical to US manufacturing, describing the mechanisms responsible for

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