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Physical Measurement Laboratory

Developing and delivering trusted measurements to support national needs.

Wide shot shows two researchers on either side of a scientific device made of metal cylinders, peering closely at it.
NIST Weighs In on the Mystery of the Gravitational Constant
Two male researchers in casual clothes and protective eyewear stand in the lab, pointing at a screen hooked up to a laser science instrument.
Any Color You Like: NIST Scientists Create ‘Any Wavelength’ Lasers in Tiny Circuits for Light

News and Updates

Mary Kombolias

Welcome to Mary Kombolias!

The NIST Office of Weights and Measures (OWM) is pleased to have Mary Kombolias from the Manufacturing Extension Program (MEP) at NIST join us on a one year...

Events

Awards

Jun Ye (from the chest up) standing in front of a wall of books and awards. Background is blurred out.

Jun Ye Receives the Quantum 100 Award

According to the Quantum 100 list, Ye is “recognized for his curiosity and hands-on approach to experimentation...He has built a world-class research program using light, atoms, molecules, and advanced optical tools to explore nature with precision."

View All Awards

Press Coverage

Four researchers, one older and three younger, pose in the lab holding models of a laser cavity.

Building a better laser on the Moon

Physics World
There are craters on the Moon where the Sun never shines – and researchers in the US and Germany have shown that these shady locations would be ideal for...

Patents

Continuous-Wave Laser Source And Making A Continuous-Wave Laser Source

NIST Inventors
Scott Papp
A method of designing a continuous-wave laser source having a target output wavelength and an input laser with a wavelength different from the target output wavelength includes the steps of receiving the target output wavelength, and subordinate properties of the laser source; determining a

Sound Pressure Metrology Instrument And Determining Sound Pressure From Index Of Refraction

NIST Inventors
Richard A. Allen , Randall P Wagner , Benjamin Reschovsky and Akobuije Chijioke
A sound pressure metrology instrument determines sound pressure from index of refraction and includes: a light source that produces source light; the optical cavity that: receives an acoustic field from the sound source; receives the source light from the light source; produces acoustic-modified

Contacts

PML Director and Deputy Director

Associate Director for Measurement Services and Associate Director

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