What is a three -level laser?
Laser generally emits light through the type of amplification. Atomic photons can be manipulated to concentrate the energy of light on a small area or direct it over long distances. The way in which the energy is directed to the light beam to intensify is called drawing and the laser pump usually stimulates the particles to a higher energy state. Each state is often referred to as a level; For example, a three -level laser can direct light in three different stages before its emit. Such configuration is often used to ensure that the beam is at the required performance level.
The energy used in the laser usually excites photon particles, but may also have the opposite response. In a three -level laser, the light is transferred from the resting state to the high energy level; In the second phase, this energy decomposes, but no particles are emitted as radiation. In general, no more than half of the particles in this process do not have enough energy. Engineers have suggested systems thatIt can make them be more energetic than necessary. The last stage is the activation of the laser beam and the rapid decrease in the energy of the particles usually occurs when the particles are issued.
After burning the beam, energy levels are normally reduced to the lowest condition. The terrestrial state of the three -level laser is therefore called lower laser levels or E1, which is usually the state of the system after emission. Energy is often directed to E3 level directly from E1, while the upper laser level, called E2, usually occurs just before the beam activation.
The use of just half of the electrons in general requires that more power is added to the three -level laser. Most of the energy passes to a lower state without radiating light or other radiation, which is generally allowed to transport energy by particles called grid photons. This type of laser therefore, usually not as effective as some other varieties.
EnerThe getal states at each level lasts for fractions of a second, despite substantial profits and losses that may occur. Another phenomenon that often occurs in a triangular laser is the inversion of the population in which the amount of particles in higher energy is greater than in the lower countries. Light amplification is usually the result. However, these energy states are only achieved in a part of the particles in this type of laser, so sometimes energy efficiency should be addressed.