infrared laser tagged posts

As they are cooled by the laser, the nanocrystals developed by the UW team emit a reddish-green “glow” that can be seen by the naked eye. Credit: Dennis Wise/University of Washington

Since the first laser was invented in 1960, they’ve always given off heat, but have never been able to cool liquids. University of Washington researchers are the first to solve a decades-old puzzle – figuring out how to make a laser refrigerate water and other liquids under real-world conditions.
They used an infrared laser to cool water by about 36F – a major breakthrough in the field.

It could help industrial users “point cool” tiny areas with a focused point of light...