The word laser is an acronym that stands for Light Amplification by Stimulated Emission of Radiation. According to the dictionary the word’s origin goes back to 1960, which is when TH Maiman developed the first optical laser. There is a lot of physics behind how a laser beam, the fact that we try to simplify is created.
First let us consider the atoms, electrons and photons. An atom consists of a nucleus surrounded by a “cloud” of electrons. These usually electrons orbiting around the nucleus at a given energy level, called the ground state. When energy (in the form of light, heat, radiation, etc.) apply to atoms, electrons are raised to a higher energy level called excited state. To return to the ground state, the electron must rid their excess energy, which occurs in the form of heat and the emission of a photon. Perceive these photons as visible light.

curso-laser-02The photons produced in this manner – or similarly by heating up a filament in a bulb – produce very diffuse. That is, the photons leave the filament travel in all directions. Moreover, photons may be at different wavelengths, which makes that some photons to cancel out each other. All this creates a beam of light that is spreading rapidly and fades at all.

The laser acts on Einstein’s theory of stimulated emission establishing basically that an electron can be “encouraged” to resign a photon by another photon when hit with it.
The laser of Maiman used a solid core of ruby “bombarded” with light from a flash lamp. Ruby is reflected in the extreme and the other is partially reflected. How to excite the electrons of the atoms emit photons ruby traveling in different directions. Many of the photons simply escape from the sides of the nucleus, but some travel along the correct axis and are reflected at the very end. Since these photons travel back through the core stimulate the emission of other identical. Thus it generates a chain reaction and soon, most of the photons in the core are of the same wavelength and traveling in parallel. The reflected portion of the core end allows some escape of these photons (the “laser beam”) while the rest is reflected throughout the core to stimulate the emission of more photons.

Because the photons are traveling in the same direction, the light is produced by a laser is much more coherent than traditional light. This means that a laser beam travels more without losing the intensity. However, because the beam is not scattered as they travel, a laser beam generally produces a very small point of light on the target. To create a beam of light over many visible effects make use of a scanner, a set of small vibrating mirrors that can create all kinds of bosses and effects to light. In addition, the majority of the laser effects are seen best when protrude through fog or mist. This is because the smoke particles reflect part of the laser light, which makes the beam visible throughout its length.
The first lasers developed by Maiman and his contemporaries were using uncommon materials and high intensity lights to create the laser beam. This meant that the laser equipo needed to create an effect would often expensive to most people. Recently, the development of diode laser have led to a large amount (say some excess) of low-cost equipment, laser pointers from the barcode scanners to special lighting effects.

curso-laser-01If we talk about laser diodes used to create special lighting effects, we say that the intense beam of light in any of its many geometric bosses, creates an amazing appearance in a scene or dance floor. This effect increases when the beam is projected through a saturated atmosphere of fog generated by a smoke machine. This can create huge beams of light or “laser tunnel” around the performers. In addition, a set of powered mirrors can be added to create a simulation of an intelligent lighting effect and increase the overall impact of the laser.

Lasers are classified according to the amount of energy they produce and the biohazard of their emissions. Because many of the modern laser equipment using great powers, the radius is created, it can be harmful to the eye if viewed directly.
Therefore it is a good idea for anyone who uses this type of equipment, the position of the unit and mirrors to deflect the beam to be placed so that members of the public, club and attendees do not see it directly. The laser positioning the corners of your space or pointing down a sheer angle can prevent people accidentally aim the beam of light.

This basic theory will help you find there is a bit of this type of physical effects.