For the body quality of laser pointer might matters much for the customer

For the body quality of laser pointer might matters much for the customer
There are various types of solid, gas, semiconductor, organic dyes, chemical, excimer, free electrons, giant pulse. Laser wavelength from 100 angstroms to 0? 5 mm, maximum continuous power of 100,000 watts, the maximum pulse power of up to one billion kilowatts. What kind of laser light is? Simply put, the laser is a light. With ordinary light, such as sunlight, light as an electromagnetic wave. Laser-produced with ordinary light, it is material "stimulated" to produce the light. In 1917, Einstein Statistics balanced view of the "black body" radiation, get a conclusion: "in nature there are two different luminous. Called spontaneous emission by stimulated emission of radiation" in another. The relative humidity of the storage place of laser pointer should meet the specific standard.
A variety of artificial light sources such as lamps, fluorescent lamps belong to the spontaneous emission light. The light emitted by the various natural phenomena, also belong to the spontaneous emission. These light have in common, such as light in all directions injection, which contains a variety of colors. The laser is the atom by stimulated emission of radiation of light. The laser is a new type of light source, the difference between it and the ordinary light is illuminated microscopic mechanism is different. Ordinary light luminescence is spontaneous emission-based, light waves, regardless of the direction issued by the individual luminescence center, phase or polarization state are not the same. The luminescence of the laser is based on stimulated emission mainly light wave emitted by the various luminescence centers have the same frequency, direction, polarization and phase relationship. The temperature of the place where the material of laser pointer will be stored should be the room temperature.
Because of these differences, the laser has a high intensity, monochromaticity, coherence and good direction, several features. The brightness of the laser is a high-pressure xenon lamp brightness of 3.7 billion times. The laser field is the optical frequency electronic areas. The emergence of lasers, optical frequency band of electromagnetic vibration source. Today, the concept of wireless electronics, theoretical and technical principles can be extended to the optical frequency band. Electronics into a new world. Between the electronic and optical gap no longer exists. Optical was originally an ancient physics, and now due to the discovery and application of the laser, the rise of a promising optoelectronics. Laser English transliteration in the past, the book as "les", meaning "light by stimulated emission" after 1964, collectively referred to as "laser". The moisture of the storage place of the material of laser pointer should meet the specific requirement.
Introduced laser publications also often mentioned that a technical term is called the "degeneracy", which is the difference between laser and light technical indicators.