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Metrology

Optical / photometry / laser metrology

Projects/Programs

Keyword

Organizational Unit

Optical and Optoelectronic Materials Characterization

Ongoing

This project aims to develop rigorous measurements and methodology needed for determining optical and electrical properties of advanced materials that might be

Optical Radiation Metrology and Standard Radiometers

Ongoing

Radiometric, radiance temperature, photometric, and color scales have been realized based on the spectral responsivity of standard detectors and radiometers

Optical scattering from surfaces

Ongoing

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

TOP: Image of fluorescent reference material on microscope. BOTTOM: Charting of microscope control parameters.

Performance Benchmarking and Intensity Calibration of a Widefield Fluorescence Microscope

Ongoing

We have made available a method to characterize a fluorescence microscope's performance by benchmarking the detection threshold, saturation and linear dynamic

Photometry

Ongoing

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

Planar absolute cryogenic radiometer with multiwall vertically-aligned carbon nanotubes. Superconducting transition-edge sensor. Fully-lithographic fabrication.

Photonic Radiometry

Ongoing

Accurate characterization of photonic equipment is important for optical communications, medical devices, semiconductor lithography, manufacturing and materials

Photonic Thermometry

Ongoing

Photonic Thermometry is a cutting-edge research program at NIST that aims to break the fundamental limitations of electrical resistance-based thermometry and

Pico-Watt ACR

Ongoing

The goal of the Pico-Watt ACR project (pW-ACR) is to develop an absolute cryogenic radiometer (ACR) able to calibrate 1 pW of optical power with less than 1%

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

Primary optical watt radiometer (POWR)

Ongoing

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

Qualification for AM Feedstocks, Machines and Processes

Completed

Machines and processes used to produce critical components for defense, aerospace, and medical applications must first be formally qualified. While

Quantitative Information from Images

Ongoing

Photographs, or optical light images, are spatial records of light reflected or emitted from objects. Thus, they are prospective light measurements. In many

Quantum Radiometry

Ongoing

The goal of this project is to develop single photon source and detector measurement and calibration capabilities to support the emerging quantum industry and

Radiation Sensitivity of Thermoluminescent Dosimeter Sensors

Ongoing

The radiation sensitivity of a Thermoluminescent Dosimeter (TLD) is defined as dosimeter light output per dose unit. TLD light output depends not only on the

Radiation Thermometry

Ongoing

Calibration standards for radiation thermometry are disseminated in the form of radiation thermometers, tungsten strip lamps and blackbodies. These disseminated

Reflectance Measurements of Human Skin

Ongoing

The purpose of this human subjects study is to collect high-quality measurements of the reflectance spectrum of human skin and assess the variability across the

Remote Sensing Laboratory

Ongoing

The Remote Sensing Laboratory comprises spectral radiance and irradiance sources, filter and hyperspectral radiometers, and an environmental chamber that are

SDO/EVE/ESP Calibration

Ongoing

NASA launched the Solar Dynamics Observatory ( SDO) satellite on 11 Feb 2010 on a mission to study the sun. The EUV Variability Experiment ( EVE) on SDO

Solid-state lighting metrology

Ongoing

With the rise of new, energy-efficient solid-state lighting (SSL) systems has come the need for new performance metrics and measurement methods to address their

Spectral irradiance and radiance responsivity calibrations using uniform sources (SIRCUS)

Ongoing

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

Spectral Reflectance and Transmittance

Ongoing

NIST maintains the national scales for reflectance and transmittance in the ultraviolet, visible, and near-infrared spectral regions (250 nm to 2500 nm). Our

Spectral responsivity measurement

Ongoing

NIST provides calibration of the spectral responsivity and spatial uniformity of photodetectors for use in industrial and government labs. These calibrations

spectrophotometric processes illustration

Spectrophotometry

Ongoing

Spectrophotometry is a quantitative measurement technique that allows scientists to investigate the optical properties of materials over a wide wavelength range

Spectroradiometry of sources

Ongoing

Calibration standards for spectral radiance and spectral irradiance are disseminated in the form of transfer lamps and integrating sphere sources. These

State-resolved Spectroscopy of Biomolecules

Ongoing

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

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---Spectrum Technology and Research Division
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---Biosystems and Biomaterials Division
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----Biosystems and Biomaterials Division - HQ
---Chemical Sciences Division
----Biochemical and Exposure Science Group
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----Optical Measurements Group
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----Gas Sensing Metrology Group
----Inorganic Chemical Metrology Group
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---Biomolecular Measurement Division
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---Materials Science and Engineering Division
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---Applied Physics Division
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---Quantum Measurement Division
----Quantum Optics Group
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----Laser Cooling and Trapping Group
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---Quantum Sensors Division
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