Laser Cutting – A Contract Manufacturing Overview

Laser is the abbreviation used to represent the term “light amplification by stimulated emission of radiation”, which can be translated into our language as “amplification of light by stimulated emission of radiation”. This is the same laser used in the so famous fiber laser cutting machine.

It is a device that produces electromagnetic waves, that is, light, with specific characteristics. The characteristics of the laser light are as follows:

Monochromatic means that it has only a well-defined wavelength and therefore only one color;

Coherent: the electromagnetic waves produced by the laser are all in phase;

Collimated: there is little divergence between the rays of light produced by the laser, and they are practically parallel. This causes this light to propagate over large distances without losing power.

Laser operation in fiber laser cutting machine and in other laser cutters

The first laser came in the year 1960, its operation being based on the theory of Einstein and Planck, who claimed that light was formed by “packets of energy” called photons.

The atoms are formed by protons, neutrons and electrons, and the electrons are located in the electrosphere around the nucleus. Each electron occupies a specific energy level in the electrosphere. When in the ground state, the energy of the electron equals zero (E0), if the atom receives energy from some source, it will move it to a higher energy level (EX), called the excited state. However, if you lose energy, the electron will tend to migrate to a lower energy level, emitting photons. This might sound complicated, but there are thousands of laser cutter machines that work just fine in the world.

More on laser and its magic

There are three processes in which the electron can move from one energy level to another, they are:

Absorption: when an electron in its ground state of energy is subjected to an electromagnetic radiation and absorbs photons, passing into an excited state;

Spontaneous emission: occurs when the atom is in its excited state of energy and is not subjected to any energy. After some time, the electron passes into the ground state spontaneously, emitting a photon;

Stimulated emission: also occurs when the electron is in an excited state and is subjected to electromagnetic radiation, i.e., photons. A photon of energy stimulates the atom by passing into the ground state by emitting another photon. This is common in many fiber laser cutting machine.

How to trigger the laser

The laser works when it receives enough energy to excite a quantity of electrons from a material to a higher energy level until there are more electrons excited than in the ground state.

When this occurs, these electrons are stimulated to emit their photons, thus initiating a cascade effect: the emitted photon stimulates the next to emit another photon and so on. This amplifies the emission of light beams with well-defined wavelength.

Currently, lasers have several applications. Larger lasers are used in nuclear fusion research in astronomy to measure great distances and also in military applications. This is why laser engraver machine for example sound so simple and common; however, every single laser cutter machine has laser inside working as described in this article. The smaller lasers can be used in reading bar codes, reading CDs and DVDs, minor surgeries, cutting fabrics, among others.

Check out this link for more information at: http://www.instructables.com/id/10-Tips-and-Tricks-for-Laser-Engraving-and-Cutting/.

 

Laser Cutter Company Reviews:

Be certain to get feedback from machine owners prior to purchase.  Forums can sometimes be a source for reviews as long as you get advice from actual machine owners. Here’s examples of reviews on a CNC forum.   Another review from a forum post on the software usability.  And this company in particular may be a great company.  Point is that reviews can be found all over online.  Best to get reviews from third party sites, however.

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Laser Cutting Companies

The laser beam is formed by light particles (photons) concentrated and emitted as a continuous beam. To do this, you need to stimulate the atoms of some material to emit photons. This light is channeled with the help of mirrors to form a beam. The technology was created in 1960 by Theodore Maiman. At the time, the American physicist encouraged ruby ​​atoms to emit concentrated light. Since then, laser has evolved and is currently used in home, surgical, industrial, and military and space devices – laser beams have even been used to measure the distance between Earth and the Moon. Although it is possible to create weapons to blind enemies and to intercept Missiles (warming them to explode), laser-firing pistols, as illustrated in many comics, are not so far from reality as many people might think. However, nowadays it is possible to see lasers used in real life, as in companies that use laser cutter reviews.  You can also see some laser machinery here.

Light, camera, action – for new business chances

Creating a laser looks like a ballad, with lots of energy, frantic lighting, and a set of mirrors. Every laser needs an active principle that can be solid, like ruby, or gaseous, like carbon dioxide, inside a closed chamber. The atoms of the material are stimulated to generate light, the main ingredient of a laser beam. In order for the light to emerge, it is necessary to excite the atoms of the active principle. The stimulus may occur by electricity, by the light of a less powerful laser, by a light source or by chemical reactions. This energizes the electrons and stimulates them to try to escape the atoms.

The tendency of excited atoms is to return to stability, with the electrons returning to their original state. When this happens, the energy that stimulated the electron dissipates as light particles (photons). That is why using laser cutter happens in a safe way, nothing will explode. This is the basic concept of the machines, and each model has its variations, all working in the same style. More details here: http://www.instructables.com/id/Tips-for-buying-a-laser-cutterengraver/

How Does the Laser Tube fire?

In addition to the external energy that powers the laser tube, the photons also excite neighboring atoms, making the co2 laser engraver work, for example. With this, the amplification of the light scrolls. The term is mentioned in the acronym that forms the word laser. A pair of exactly parallel mirrors commands the circulating photons moving around the cylinder. Instead of bouncing off all sides, the photons begin to circulate in the same direction, forming a coherent beam of light, that is, in which the light does not diffuse. The front mirror does not actually reflect all the light that strikes it. It lets the tube emit only 2% of the coherent beam of light. This then is the laser beam! The material used to create the beam determines the color of the beam. The power of the laser is regulated by the amount of energy expended to stimulate the emission of light, making the magic happen in the co2 laser engraver.

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