Laser ,Types and Use

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 LASER :- 

                 LASER is an acronym of  Light Amplification by stimulated emission of Radiation. It is an optical device which produces an intensive beam of highly coherent, Monochromatic light[ Electromagnetic radiation, especially visible radiation, of only one frequency or wavelength]. It can travel over great distance without spread. 



LASER LIGHT :- 

                                1. It is very different than normal light and contains only one specific wavelength of light. 

                               2. A laser light has very tight beam and is very strong and concentrated. 

                               3. A laser light can go to the moon and then come back to the earth without any appreciable change in intensity. 

                                4. The light released is monochromatic (consists of only one wavelength) and coherent. 

LIPS( LASER Induced Plasma Spectroscopy) :-

It is based on plasma formation on temperature basis, the material absorbs all the heat and light from a fused laser beam. The stage comes, when the material becomes plasma. LIPS is mainly used to analyse the chemical composition of various materials. e.g. rock samples.

Uses of Laser

When lasers were invented in 1960, they were called "a solution looking for a problem". Since then, they have become ubiquitous, finding utility in thousands of highly varied applications in every section of modern society, including Consumer Electronics, information technology, science, medicine, industry, Law enforcement, entertainment, and the Military. Fibre optic communication using lasers is a key technology in modern communications, allowing services such as the Internet.

The first widely noticeable use of lasers was the supermarket bar code scanner, introduced in 1974. The laserdisc player, introduced in 1978, was the first successful consumer product to include a laser but the compact disc player was the first laser-equipped device to become common, beginning in 1982 followed shortly by laser printers.

Lasers in Medicine

         Lasers are used for bloodless surgery.

  1. Lasers are used to destroy kidney stones.
  2. Lasers are used in cancer diagnosis and therapy.
  3. Lasers are used for eye lens curvature corrections.
  4. Lasers are used in fiber-optic endoscope to detect ulcers in the intestines.
  5. The liver and lung diseases could be treated by using lasers.
  6. Lasers are used to study the internal structure of microorganisms and cells.
  7. Lasers are used to produce chemical reactions.
  8. Lasers are used to create plasma.
  9. Lasers are used to remove tumors successfully.
  10. Lasers are used to remove the caries or decayed portion of the teeth.
  11. Lasers are used in cosmetic treatments such as acne treatment, cellulite and hair removal.

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