Optical / photometry / laser metrology

News and Updates

Do the Bump: NIST Scientists Perfect Miniaturized Technique to Generate Precise Wavelengths of Visible Laser Light

November 28, 2023

In research, sometimes the bumpy path proves to be the best one. By creating tiny, periodic bumps in a miniature racetrack for light, researchers at the

NIST Researchers Develop a Breakthrough COVID-19 Detection Technology

October 2, 2023

“Only connect” is the most famous line in the British novelist E. M. Forster’s writings. Forster was urging the readers of his book Howard’s End to make

Measuring Up: NIST’s Missile Defense Transfer Radiometer

September 29, 2023

If you’re undergoing a missile attack and that missile is above the atmosphere, the best place to destroy it is while it’s still in space. To do that, you need

Projects and Programs

NIST Automated Vehicles Program

Ongoing

Building on a successful first-year Strategic and Emerging Research Initiatives (SERI) project NIST and Autonomous Vehicles (see 2022 NIST AV workshop and

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

Metrology of Dim Light Sources

Ongoing

Luminescent tags are molecular highlighters. They enable light-based biological assays, visualize biological processes, and are used as diagnostic and

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

Publications

Precision Doppler shift measurements with a frequency comb calibrated laser heterodyne radiometer

September 26, 2023

Author(s)

Ryan Cole, Connor Fredrick, Newton Nguyen, Scott Diddams

We report precision atmospheric spectroscopy of CO2 using a laser heterodyne radiometer (LHR) calibrated with an optical frequency comb. Using the comb

Single-photon Sources and Detectors Dictionary

September 7, 2023

Author(s)

Joshua Bienfang, Thomas Gerrits, Paulina Kuo, Alan Migdall, Sergey Polyakov, Oliver T. Slattery

The intention of this dictionary is to define relevant terms and metrics used in the characterization of single-photon detectors and sources with the goal to

Report from the Extreme Ultraviolet (EUV) Lithography Working Group Meeting: Current State, Needs, and Path Forward

August 22, 2023

Author(s)

Elizabeth Rasmussen, Boris Wilthan, Brian Simonds

This is the report of a hybrid working group meeting held on April 25, 2023, at the National Institute of Standards and Technology (NIST) in Boulder, CO. The

Accurate characterization of indoor photovoltaic performance

August 7, 2023

Author(s)

Behrang Hamadani

Software

JB95 Spectral fitting program

February 19, 2016

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

FPGA-based Digital Control Box for Phase Stabilization of a Frequency Comb

October 1, 2015

This page provides information on firmware/software used at NIST to phase-lock a frequency comb. The firmware/software operates with hardware that was developed

Simple and Inexpensive FPGA-based Fast Multichannel Acquisition Board

This project allows investigators to build their own data acquisition instruments to collect and statistically process data in real time, then send the results

Modeled integrated scatter tool (MIST)

The MIST program has been developed to provide users with a general application to model an integrated scattering system. The program performs an integration of