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Physics

Optical physics and communications

News and Updates

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Sub-microscopic LEDs Shed New Light on Advanced Materials

July 12, 2017

One of the persistent challenges in 21 st century metrology is the need to measure ever-more-detailed properties of ever-smaller things, from microchip features

Cool It, Hot Rod: Improving Early Lasers

May 1, 2017

In the first decade after the invention of the laser one challenge to improving laser quality was the distortion of a laser’s rod due to absorption of heat

Measuring Acceleration with Light

March 29, 2017

Most people have never seen an accelerometer -- a device that measures change in velocity -- and wouldn’t know where to look. Yet accelerometers have become

1st North American Conference on Trapped Ions

March 20, 2017

The Ion Storage group at NIST Boulder will be holding a new Ion Trap Conference at our laboratory. The conference will be similar in scope and aims to the

Light on the Rebound: ROSI Sees It from Every Angle

February 13, 2017

We see the world in reflection: Nearly all the light that enters our eyes has bounced off something first, bringing with it information about the nature of the

Wearable ‘Watches’ to Monitor Your Blood Pressure

January 24, 2017

What if there were a wearable fitness device that could monitor your blood pressure continuously, 24 hours a day? Unfortunately, blood pressure (BP)

Keeping a Sharp Eye on the Environment from Space

December 7, 2016

On Nov. 19, 2016, America’s most advanced weather satellite rocketed into orbit carrying six new, state-of-the-art instruments, dramatically enhanced

Seeing Light’s Effect on Atoms — Within Picoseconds

November 16, 2016

For the first time in a laboratory setting, NIST scientists have made stop-action x-ray measurements of the way visible light interacts with atoms and molecules

Screenshot of an animation of a superradiant laser

JILA’s Superradiant Laser May One Day Boost Atomic Clocks and ‘Rulers’ for Space

October 14, 2016

BOULDER, Colo. – JILA physicists have demonstrated a novel laser design based on synchronized emissions of light from the same type of atoms used in advanced

Optical Clocks Synched to Femtoseconds -- Through the Air

April 21, 2016

NIST researchers have devised a way to synchronize the time of two different clocks – separated by as much as 4 km of open, turbulent air – to within a few

Head to Head: Photonic Pressure Sensors vs. Mercury-Based Standard

April 21, 2016

When a team of researchers at NIST's Physical Measurement Laboratory (PML) first tested a new kind of pressure sensor two years ago, initial results showed it

False-color scanning electron micrograph of a nanophotonic frequency converter

New Nanodevice Shifts Light's Color at Single-Photon Level

April 18, 2016

Converting a single photon from one color, or frequency, to another is an essential tool in quantum communication, which harnesses the subtle correlations

Thinking Outside the Cuvette: To Measure Dimensions of Skinny Glass Container, PML Scientists Get Creative

February 1, 2016

Let's say you're a biotechnologist working to develop new medicines or a better test for forensic analysis. You might find yourself frequently using absorbance

JILA instrument for accurately tracking microscopic objects such as DNA molecules

Ultra-stable JILA Microscopy Technique Tracks Tiny Objects for Hours

June 30, 2015

JILA researchers have designed a microscope instrument so stable that it can accurately measure the 3D movement of individual molecules over many hours—hundreds

Photonic Thermometers: Out of the Lab, Into a Bucket of Water

April 28, 2015

A new class of tiny chip-based thermometers being developed by PML's Sensor Science Division has the potential to revolutionize the way temperature is gauged

Novel Neutron Detector Makes Scintillating Debut

March 9, 2015

A team of researchers has successfully demonstrated a new design concept for a neutron detector that does not rely – as nearly all current models do – on a

integrating sphere for light measurements

Following a New MAP for Solid-State Lighting

February 19, 2015

LED lights are notably cool. But as an industry sector, solid-state lighting (SSL) keeps heating up, with demand growing rapidly in residential, commercial, and

Lighting the Path to Smaller, Tougher Thermometers

December 15, 2014

Two new prototypes for tiny chip-based thermometers are illuminating light's potential to revolutionize the way temperature is gauged. With further development

Thin, Strong Bond for Vacuum Seal

December 2, 2014

An ultra-stable, ultra-thin bonding technology has been adapted by researchers in PML's Semiconductor and Dimensional Metrology Division for use as a super

Taking the Wraps off NISTAR

December 2, 2014

The NIST Advanced Radiometer (NISTAR), mothballed for more than a decade, is slated to make its space debut very soon about 1.5 million kilometers sunward of

Low Error-Rate Detector System for Telecommunications

December 2, 2014

NIST scientists have devised an experimental photon-detection system for communications with error rates far below even the most ideal conventional designs

Earth Science: Seeing the Surface Clearly

November 24, 2014

Satellite observation has revolutionized our understanding of terrestrial conditions and climate dynamics. But the measurement science is extremely demanding

Gauging the Hue of the Sea

November 24, 2014

The world's oceans face multiple threats, and fisheries, marine biologists, and environmental scientists need accurate and timely data about changing conditions

World's First Photonic Pressure Sensor Outshines Traditional Mercury Standard

October 29, 2014

For almost 400 years, mercury gauges have prevailed as the most accurate way to measure pressure. Now, within weeks of seeing "first light," a novel pressure

Paul Williams and Joshua Hadler operating the NIST calibration service for high-power lasers.

NIST Launches New Calibration Service for High-Power Lasers

October 29, 2014

The National Institute of Standards and Technology (NIST) has launched a new calibration service for high-power lasers of the sort used by manufacturers for

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