Upgrading cheap diode laser for use in precise measurements

06-Nov-2018 - Russian physicists have developed a method for drastically narrowing the emission spectrum of an ordinary diode laser, like that in a laser pointer. This makes their device a useful replacement for the more complex and expensive single-frequency lasers, enabling the creation of compact chemical ...

A new way to measure nearly nothing

Prototype design uses ultracold trapped atoms to measure pressure

23-Oct-2018 - Many semiconductor fabricators and research labs are under increasing pressure from, of all things, vacuum. These facilities need to remove greater amounts of gas molecules and particles from their setups as new technologies and processes demand lower and lower pressures. For example, the vacuum ...

Color me purple, or red, or green, or ...

10-Nov-2017 - Imagine a miniature device that suffuses each room in your house with a different hue of the rainbow--purple for the living room, perhaps, blue for the bedroom, green for the kitchen. A team led by scientists at the National Institute of Standards and Technology (NIST) has, for the first time, ...