Types of lasers presentation

Many types of lasers can be divided into several types of solid, gaseous, liquid, semiconductor and dyes:

(A) solid-state Laser Pointers are generally small and rugged, high-power pulsed radiation, the wider range of applications. Such as: Nd: YAG laser. Nd (neodymium) is a rare-earth element, YAG representative of yttrium aluminum garnet, ruby crystal structure similar.

(2) semiconductor lasers small size, light weight, long life, simple structure, particularly suitable for use on aircraft, ships, vehicles and spacecraft. The semiconductor laser may be changed by the applied electric field, magnetic field, temperature, pressure, etc. in the wavelength of the laser, can be directly converted to electrical energy laser energy, so that the rapid development.

(3) gas laser with gas as the working substance and coherence better monochromatic laser wavelength of up to thousands of species, widely used. Simple gas laser structure, low cost, easy to operate. Widely used in industry, agriculture, medicine, precision measurement, holography technology. There are many ways gas laser excitation energy, thermal energy, chemical energy, solar energy, nuclear energy, etc.

(4) the working substance in liquid dye dye lasers come in 1966, is widely used in various scientific fields. Dye laser can produce now been found, about 500 kinds. These dyes may be dissolved in alcohol, benzene, acetone, water or other solutions. They can also be included in the solid organic plastic material to occur, or sublimation vapor in a gaseous form. Therefore, a dye laser, also known as "liquid laser." Salient features of dye laser wavelength continuously adjustable. Fuel laser variety, low price, high efficiency, output power and gas and solid-state lasers can be comparable, applied spectrometry, photochemical, health and agriculture.

(5) has a variety of types of infrared Laser Sights, a wide range of applications, it is a new type of infrared radiation, characterized by a high radiation intensity, good color, good coherence, directivity and strong.

(6) X-ray lasers in research and military have significant value, used in laser anti-missile weapons have an advantage; biologist with the X-ray laser to study the molecular structure of living tissue or detailed understanding of cell function; taken with X-ray laser photo molecular structure of the biomolecule resulting high contrast of the image.

(7) Some of the chemical reaction of chemical lasers generate enough high energy atoms, it can release a large energy used to produce the laser effect.

(8) The free-electron laser is more suitable for this type of laser radiation have a great power than other types. It's working mechanism different, it gets tens of millions of volts of high-energy electron beam from the accelerator adjustment, the periodic magnetic field, forming a different energy state energy levels, resulting in stimulated emission.

(9) an excimer laser, a fiber laser or the like guided wave

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