The word LASER stands for “Light Amplification by the Stimulated Emission of Radiation". In simple words, light particles (photons) excited by the current release energy in the form of light. This light is directed in a bundle. In this way the laser beam is formed.
Lasers are among the most important inventions of humanity and play a fundamental role in our daily lives; they are used in almost every area that we can imagine including electronics, modern medicine, defense and more.
In the industry, lasers are used every day for: engraving, marking, welding, cutting, drilling, cleaning, measuring, detection and more. Laser has become one of our most powerful production tools!
All lasers are composed of 3 parts:
External pump source
The active laser medium
The resonator
The pump source directs the external energy to the laser.
The active laser medium is positioned inside the laser. According to the design, the laser medium can be composed of a gas mix (CO2 laser), a crystal body (YAG laser) or fibreglass (fibre laser). When transferred to the laser medium through the pump, energy is emitted as radiation.
The active laser medium is positioned between two mirrors, the “resonator”. One of these mirrors is one-directional. Radiation of the active laser medium is amplified by the resonator.
At the same time, only certain radiation can leave the resonator through the one-directional mirror. This directed radiation is laser radiation.
LASER RADIATION HAS 4 FUNDAMENTAL PROPERTIES
Monochromaticity
Natural light includes a series of wavelengths that range from ultraviolet to infra-red. Instead, a laser is a strip of light with a single wavelength. This characteristic is called monochromaticity. Monochromaticity has the advantage of allowing greater optical design flexibility. This gives precise designs that transmit the laser beam over large distances and concentrate the laser in a very restricted area.