India After 66 Years of Independence

Topics: Laser, Organic compound, Organic chemistry Pages: 3 (811 words) Published: August 15, 2013

An organic compound is any member of a large class of gaseous, liquid, or solid chemical compounds whose molecules contain carbon. Organic chemistry is the science concerned with all aspects of organic compounds. Organic synthesis is the methodology of their preparation. APPLICATIONS OF ORGANIC COMPOUNDS

clothing of cotton, wool, silk, and synthetic fibres; common fuels, such as wood, coal, petroleum, and natural gas; components of protective coatings, including varnishes, paints, lacquers, and enamels; antibiotics and synthetic drugs; natural and synthetic rubber; dyes; plastics; and pesticides, in laser technology. LASER TECHNOLOGY

A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. Lasers have many important applications. They are used in common consumer devices such as DVD players, laser printers, and barcode scanners. They are used in medicine for laser surgery and various skin treatments, and in industry for cutting and welding materials. They are used in military and law enforcement devices for marking targets and measuring range and speed. Laser lighting displays use laser light as an entertainment medium. *organic compounds are used in dye lasers

What is a dye laser?
A dye laser is a laser which uses an organic dye as the lasing medium. The organic dye is mixed with a solvent, which may be circulated through a dye cell, or streamed through open air using a dye jet. The dyes used in these lasers contain rather large organic molecules which fluorescence. The incoming light excites the dye molecules into the singlet state to emit stimulated radiation via fluorescence, and the dye is transparent to the lasing wavelength. Within a microsecond, or less, the molecules will change to their triplet state where light is emitted via phosphorescence, and the molecules absorb the lasing...
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