What is Laser Cooling?

Laser cooling is a high-tech that uses the interaction of laser and atoms to slow down atomic motion to obtain ultra-low temperature atoms.

Laser cooling

The main purpose of this technology early was to accurately measure various atomic parameters for high resolution

It was found that when the atoms were slightly lower in frequency

Everyone knows that lasers have the characteristics of high brightness. By using this feature, the objects illuminated by the laser can receive extremely high energy in a very short time. This technique can be used for metal welding and human surgery.

In 1985, Zhu Xiwen and others used laser cooling to obtain the lowest temperature reached in the laboratory at that time, which was 2.4x10 ^-4 K, which was very close to absolute zero, but never reached 0 K. At present, picoKelvin can be achieved. Of cooling.