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Metrology

Optical / photometry / laser metrology

News and Updates

Projects and Programs

autonomous vehicles view from above

NIST Automated Vehicles Program

Ongoing
Measurement science and standards are needed to support the safe and predictable operation of future automated vehicles (AVs), which have great potential to significantly impact our daily lives and improve the competitiveness of our economy. A FY22 NIST Strategic and Emerging Research Initiatives

Quantitative Information from Images

Ongoing
Projects: Quantifying Amount of Material through Light Measurement Fluorescence and Luminescence Imaging for Surgical Guidance Fluorescence-guided imaging devices are being used for navigation in minimally invasive surgical procedures to increase a patient’s positive clinical outcomes and shorten

Metrology of Dim Light Sources

Ongoing
“What is the lowest amount of light that this instrument can detect?” is an important yet unmet measurement challenge. Evaluating the detection performance of complicated imaging instruments is crucial to quantifying substances of interest and the ability to compare results across instruments
Detector-Based Radiometric Scale for both power and irradiance modes, including traceability from Cryogenic Standard

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. These reference responsivity scales have been transferred to other NIST calibration facilities to realize and maintain these detector-based

Publications

Foundry manufacturing of octave-spanning microcombs

Author(s)
Jizhao Zang, Haixin Liu, Travis Briles, Scott Papp
Soliton microcombs provide a chip-based, octave-spanning source for self-referencing and optical metrology. We use a silicon nitride integrated photonics

Far-UVC: The impact of optical filters on real-world deployment

Author(s)
C Cameron Miller, Ewan Eadie, Paul O'Mahoney, Sally Ibbotson, Kenneth Wood
In 2015, a study showed that Krypton-Chloride (KrCl) excimer lamps could induce erythema and basal layer DNA damage in human skin. Later studies found that

Software

JB95 Spectral fitting program

A graphical user interface program, JB95, based on a Windows 95 © API platform has been written in the C programming language to aid in the analysis of complex

Tools and Instruments

SIRCUS setup

SIRCUS facility and uncertainties

The basic SIRCUS calibration setup is shown at the right. The output from a tunable laser is sent through an intensity stabilizer, then through a 'speckle

Awards