Le mot laser est un acronyme pour "light amplification by stimulated emission of radiation". Les lasers sont des mecanismes qui amplifie la lumiere et produit un faisceau de lumiere consistent qui peut range de infra-rouge a ultraviolet. Il existe plusieurs types de lasers: optique, etat solide, gaz, semi-conducteur, liquide, electron libre et plusieurs autres. Il existe seulement une restriction sur le laser, et celle-ci est l'humain Nous avons pas encore trouve tout ce que le laser peut faire, par contre, les lasers ont deja revolutionne plusieurs champs dans la recherche de la science, manufacture, communication, photographie, medecine et applications militaire. Dans ce rapport, nous allons examine les differents types de laser ainsi que leurs applications en detail. Pour chaque variation de laser nous allons decouvrir plus profondement son inventeur..

Dans le domaine de la recherche de la science, les lasers ont transformer la chimie. Les scientifiques utilise les lasers pour l'etude de la structure des atomes et molecules. Il les utilise aussi pour determiner comment leurs proprietes change sous differentes environnements. Les scientifiques peuvent faire de nouvelles solutions, briser de elements et eliminer les impuretes des solutions.

Lasers have advanced medicine in so many different ways from eye surgery to plastic surgery. Doctors are always finding new ways that lasers can be used to make procedures easier to perform and to shorten the length of the procedure and easier on the patient in terms of recovery time. Many private companies are using lasers to correct vision problems. Lasik (laser-In-Situ Keratomileusis) is the most common technique for correcting the near-sighted condition. The procedure takes about five to ten minutes per eye depending upon how bad the eyesight of the person is. If the surgery is successful you should not have to wear glasses again for the treated condition. Doctors who perform plastic surgery find the laser very helpful in many different areas. They can now remove a tattoo by simply burning it off with a laser. Although this procedure is relatively painful, the pain does not last long. When doing plastic surgery the doctors will use laser to cut into or underneath the skin. As the doctor cuts the capillaries the laser automatically seals the blood flow preventing blood loss making for a cleaner surgery. The benefit to using lasers in this instance is time savings. Lasers can easily vaporize surface tumors. Surgeons also use them for cutting many of the human organs instead of a scalpel because they can make a more precise cut in the tissue around affected area. The laser will not damage the tissue surrounding the cut. Dentists use lasers to burn out diseased parts of teeth. This is a lot quicker and less painful then drilling the tooth. It also does a much cleaner job and is easier for the dentist to fill afterwards.

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Approximate Word count = 1562
Approximate Pages = 6 (250 words per page double spaced)