Broad Prospects For Development Green Laser Pointer
Nano laser research is of great significance for basic research and practical application of green laser pointer. First, two-dimensional materials are used as the thinnest optical gain materials. It has been shown that it can support laser operation at low temperatures, but whether this single-layer molecular material is sufficient to support laser operation at room temperature remains a doubt in the scientific community. Room temperature operation is the premise for practical application of most lasers, so room temperature operation of new lasers has an index significance in the development history of semiconductor lasers. In addition, due to the strong Coulomb interaction in two-dimensional materials, electrons and holes always appear in exciton states, so this laser is actually Bose with a new type of exciton polariton. Einstein Cohesion is closely related. It is one of the most active green laser pointer topics in the field of basic physics.
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A nano laser requires only about 100 microamps to operate. Recently researchers of nano lasers have put this green laser pointer on photonic wires. Shrink to a volume of only one fifth of a cubic micron. At this scale, the number of photons in this structure is less than 10, which is close to the conditions required for energyless operation, but the number of photons has not been reduced to such a limit. Recently, MIT researchers sent excited barium atoms to the laser one by one, and each atom emits a useful photon. In addition to improving efficiency, the operation of an energy-free nanometer laser can also achieve speed pole Fast laser. Since only a small amount of energy is required to emit a laser, such devices can achieve instantaneous switching. There are already lasers that can switch on and off faster than 20 billion times per second, making them suitable for fiber optic communications. Due to the rapid development of nanotechnology. The realization of this energy-free green laser pointer nano laser is just around the corner.
2019-12-26 12:16:13
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