How does the laser work?

Laser (amplification of light stimulated emissions of radiation) is the triumph of modern optics. By using a quantum mechanical effect called stimulated emissions, lasers create a coherent, almost monochromatic beam of photons. Laser -free resources usually create non -confusing, blurred rays of light on different wavelengths, which forbid certain applications.

For the creation of a laser, two components-medium compliance and resonant optical cavity are required. Some crystals, glasses, gases, semiconductors and even colored liquids can be used for medium gain. The profit medium is stimulated by the energy pump source such as electric current or other laser. Medium absorbs energy, exciting particles in the medium. After achieving a certain threshold, called the inversion of the population, shining light causes more stimulated emissions or energy release than absorption.

The resonant optical cavity is a specific chamber of allies with a mirror at one end and a half -mirror semi -mirror on the other. DvAnd the reflective surfaces cause the light trapped inside reflects back and forth through the media medium and gains more energy at each passage. When this effect is equal, the profit is saturated and the light becomes a real laser light. Various profits media cause lasers of different wavelengths.

The two laser varieties are continuous and pulsed. The continuous laser is more useful for most applications, but the pulse laser energy can be very large. The degree in which the beam varies over time over time changes indirectly with the ratio to its diameter. Small rays differ rapidly while larger are coherent.

6 has been discussed about potential areas of interest. Today, the laser is among the most versatile technological miracles, with data storage and search applications, laser cutting, vision correction, exploration, measurement, holography and displays, and even nuclear fusion. Maximum Accessable IntenZita laser pulse has increased exponentially since the mid -80s. One day, lasers can be used to create pure fusion reactions of energy producing, providing energy for the whole human race. They can also be used to push the sun's sails into the depth of the universe.