an essay by Wilson Ogg
Preliminary Remarks
The phenomenology of lasers has two outstanding features. The first feature is the remarable development of laser technology, even though advancement in technology was based on a nearly complete disconnect with the explanations used by theoretical scientists. The second feature is that explanations when used by applied scientists, along with those used by theoretical scientists, are generally based upon presuppositions often contrary to a meaningful explanation of the outstanding utility of laser technology. Many reasons exist for this situation One reason was the theory of the photoelectric effect of light advanced in 1905 by Einstein in which ultraviolet light allegedly hits a surface and causes a presupposed electron to be emitted from the surface. His explanation for this phenomenon was that light was made up of a stream of energy packets called photons. Even in 1905, the more reasonable explanation of experiments by scientists was that light was an active force and was not radiant energy or matter existinbg in time and space and engaged in motion. As a result of the disconnect between technology and theory, lasers were treated as things, atoms, or devices. The explanation of laser technology was not that it was based upon amplified and selected attributes of light as an active force.
Although it is no longer viewed that the atom has discrete orbits for electrons, it is generally believed that the atom has different energy levels similar to orbits. If heat is applied to the atom, electrons at lower energy levels would make transition to a higher energy level, further away from the nucleus. Eventually the electron will return to ground state, releasing its energy as a photon. Atoms are believed to release energy as photons all the time. For example, the heating element in a toaster turns red, and with its atoms excited by heat, it is believed that the toaster emits red photons. The word laser itself is an acronym for light amplification by stimulated emission of radiation, clearly treating laser as radiant energy and not as an active force.
Many means are used to "pump" atoms to an excited state. Often very intense flashes of light or electrical discharges do the pumping and establish a large number of excited-state atoms or atoms with high-energy electrons. For efficient laser work, a large collection of atoms in an excited state is required. In general, the atoms are said to be excited to a level that is two or three levels above the ground state, thereby increasing the population inversion which is the numer of atoms in the excited state over the number in the ground state.
Laser light is said to differ from normal light in the following three ways:
First, laser light is monochromatic and contains one spefic wavelength of light. But, the belief that a presupposed wavelenghth is determined by the amount of energy assumed to be released when an electron drops to a lower energy level is incorrect. Laser light is necessarily an amplification of one of the many active forces constituting light.
Second, laser light is "coherent" or "organized", with each supposed photon said to be moving in step with other protons. Laser light is not comprised of photons, but of active forces being launched in unision. The activer forces in normal ight are not launched in unisions.
Third, Laser light is very directional, with a very tight, very strong, and concentrated beam. Laser light is, in fact, comprised of active forces that are highly centripetal in nature while normal light tend to have similar number of centrifugal and centripetal active forces.
In General
Solid-state lasers are said to have "lasing" material distributed in a solid matrix, such as the supposed ruby or neodymium yttrium-aluminum garnet "Yag" lasers. The neodymium-Yag laser is said to emit infrared light at 1,064 nanmeters (nm). The so-called emission of infrared is an attribute of monochromatic light light as an active force. It is one form of an active force and is not a type of moving matter existing in time and space.
Gas lasers, of which helium and helium-neon, HeNe, are belierved to be the most common. Gas lasers are said to emit energy in the far-infrered, and are used for cutting hard materials. So-called gas lasers are generally based upon an extreme amplification single directional attribute of light, which is generally very multidirectional.
The word excimer is derived from the words excited and dimers. Excimer lasers are believed to be based upon reactive gases, such as chlorine and florine, mixed with inert gases such as argon, krypton or xenon. When electrically stimulated, a pseudo molecule or dimer is said to be produced that when "lased" produces light in the ultraviolet range. Excimer lasers are attributes of light highly coherent, organized, and concentrated but multichromatic.
Dye lasers are said to be complex organic dyes, such as rhodamine 6G, in liquid solution or suspension as "lasing" media. They are tunable over a broad range of supposed wavelengths. Dye lasers are based upon multicromatic light that is highly coherent in its multichromatic expression.
Semiconductor lasers are sometimes termed diode lasers. They are based upon the electronic attributes of active forces in contradistinction to the magnetic attributes of active forces. These attributes are low in power but may be built into larger arrays required in some laser printers and CD players.
Laser phenomenology has been classified into four areas based upon the potential for causing biological damage. Class I are those with phenomenology that cannot cause harm. Class IA is a special designation for laser attributes that are "not intended for viewing," such as supermarket laser scanners. Class II are said to be low-power visible lasers that assertedly emit above class I levels but at a so-called radiant power level not above 1mW. It is also believed that human reaction to bright light will protect a person. Class IIIA and Class IIIB refer to what are treated as intermediate and moderate power lasers. Intermediate power laser viewing are hazardous only for so-called intrabeam viewing. Most pen-like pointing laser attributes would be in Class IIIA. Class IV are so-called high power lasers that are hazardous to view under any condition and are potential fire hazard and a skin hazard. The active force of light when highly amplified, extremely directional, concentrated, organized is hazardous to the human being. Normal light is not and when light is to bright the reaction to such light will protect the person.
©Wilson Ogg