Few assumed that the laser, which is usually used for heating, can also cool. However, scientists from the University of Washington have demonstrated a laser beam that lowers the temperature of water or a similar liquid by up to 2 ° C.
The technology can be very useful for industrial electronics designers. It will allow "point" cooling of the necessary elements, for example, microprocessors to prevent overheating.
Scientists have used an infrared laser to excite electrons in crystals suspended in water. This generates a unique kind of glow that produces more energy than is absorbed by the light. As a result, the high-energy glow removes heat from the crystal and the surrounding water cools.
In fact, the laser cooling method was first presented back in 1995, but then the experiment took place in a vacuum. The achievement of Washington scientists allows the technology to be used in everyday conditions.