The Laser Technology. in used in different kinds and a wide range of application. Technology includes laser that is a beam of light that can store, safe and transfer an image. Laser technology is also used in surgery and weaponry applications. There are different types of laser which are gas laser, fiber laser, light laser, dye laser etc. Blue laser is very dangerous because human eyes are very sensitive and also least frequency in colors.
Chemical Laser Technology
The chemical laser emits radiation in the far infrare and infrared ranges (1.3–11 µm). Chemical lasers that release radiation in the observable range are of great interest to military technologies, for obvious reasons, although they are still at a less mature stage than infrared chemical lasers. Therefore far, we have defined lasers that are optically or electrically pumped. Chemical lasers use a different type of pumping: the energy released during the chemical reaction. Table 4.1 shows the most typical chemical reactions used in chemical lasers. The reactions used are based in most cases on the formation of excite HF * and DF * molecules. HF and DF lasers are commercially available chemical lasers that emit radiation of up to hundreds of watts.
Dye Laser Technology.
Color lasers are excite by coherent optical energy from an excitation or pump, laser, or by optical energy from specially design lamps called flash lamps. Recent advances in semiconductor laser technology have made it possible to build highly compact solid state excitation sources which, combined with new solid state dye laser materials, should allow the construction of compact tunable laser systems for the visible spectrum. Also, the direct diode laser impel of solid state dye lasers should prove even more advantageous to enable the development of fairly inexpensive small line width tunable solid state dye laser systems for spectroscopy and other low power applications. . Working with electrically excited organic amplification media can also provide new opportunities for further progress.
Fiber Lasers Technology
A fiber laser is a special type of laser in which the supply of the beam and the laser cavity are integrate into a single system within an optical fiber with the beam generate in the fiber, unlike conventional lasers where the beam it is generate abroad and sent to the interior. The system. Consider a special category of solid-state laser, fiber lasers offer many advantages over other laser Technology. that use the fiber core, and laser light with a certain wavelength is allowed to pass through the fiber. Very high gain is generate when laser light experiences a long interaction duration. To increase the output, the input of a pump laser must be powerful, which in turn requires more use of semiconductor lasers from the light source.
Gas Laser Technology
A gas laser is a laser in which an electrical current is emit through a gas within the laser medium to produce laser light. In gas lasers, the laser medium is in a gaseous form. Gas lasers are recycled in applications that need laser light with a very high beam quality and long coherence lengths. In gas lasers,Technology. the laser medium or amplification medium consists of the gas mixture. This mixture is wrap in a glass tube. The glass tube filled with the gas mixture acts as an active medium or laser medium. A gas laser is the chief laser that works on the code of converting electrical energy into light energy. Produces a beam of laser light in the infra range of the spectrum at 1.15 µm. Gas lasers are of different types: they are helium (He) – because are also that use either site neon (Ne) lasers, argon lasers.
Solid state lasers Technology
Solid-state lasers repeatedly use a lively species held in an insulating dielectric crystal, glass, or a semiconductor material. The active class itself is a
do pant ion because through discrete energy levels. They generally produce high peak rules when Q-switch as the advance energy states of the active
have relatively long lifetimes. Although firstly the medium was usually excite by a flash lamp, such setups were inhibit by their limit efficiency and
limit output power. Outside a yield of 400 W, there is a risk of the crystal rod in the resonator cracking. Lately, diode pumping has develop more
common and is because are also that use either site Because expect to completely replace lamp pumping.