CO2 Lasers
Carbon dioxide lasers are one of the most powerful lasers ever constructed. The word "LASER" stands for Light Amplification by Stimulated Emission of Radiation. Lasers are devices that amplify light and produce light beams, ranging from infrared to ultraviolet. A light beam is consistent when its waves or photons, increase while mixing together. Laser light can be extremely intense, highly directional and very pure in color. Gas lasers such as the carbon dioxide laser is made active by ultraviolet light, electron beams, electric current. Lasers, in the future, will be used tremendously in the hospitals, research, military, and even in our homes. Albert Einstein, in 1917, was the first to develop the process for laser action. In 1958, American physicists Arthur Schawlow and Charles Hard develop the working principles of lasers. Another American physicist Theodore Maiman observed the first laser action in a solid ruby, in 1960. A year later a helium-neon gas laser was constructed by Ali Javan. Then in 1966 a liquid laser was built by Peter Sorokin. With the inventions of different types of lasers developed by the previous mentioned physicist, lasers are generally classified as solid state,
Lasers are used for monitoring the earth's movement and detecting certain types of air pollution. The laser is also used for determining the earth-moon distance and in test of relativity. In the sciences, lasers can help scientists study the molecular structures of matter. This helps the medical field in cutting and burning certain tissues without damaging the surrounding healthy tissues. They have been used to 'weld' the retina, bore holes in the skull, vaporize lesions, and cauterize blood vessels(Funk and Wagnalls Encyclopedia v.15 p.411). The military has used lasers for guidance systems for missiles, aircraft, and satellites. In 1983, former President Ronald Reagan, urged the defense system to use laser beams against hostile ballistic missiles. Also the military uses the laser to help create more nuclear weapons. Bram, Leon L. Funk and Wagnalls New Encyclopedia. Volume 15. Funk and Wagnalls Corporation, 1990. Benton, William. Britannica Junior Encyclop'dia. Volume 9. Chicago, Illinois, 1967.
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Approximate Pages = 4 (250 words per page double spaced)
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