Lasers :: essays research papers

L A S E R S Did you know that some optical maser beams ar small enough and powerful enough to drill ii hundred holes on a spot as tiny as the head of a pin?The first major advancement in optical maser using came in 1954. This was the year that Charles H. Townes, an American physicist, created a eddy that amplified microwaves. This pull was actually called a maser at first, which was short for Microwave profit by Stimulated Emission of Radiation Masers. It produced microwaves of just one frequency. thus the laser was developed from the maser.Several people have been accredited for the development of the laser&8217s basic design. These people are as follows American Arthur L. Shcawlow, the Russians Alexander M. Prokhorov and Nikolai G. Basov, and the American Gordon Gould. But the first laser was constructed in 1960 by American physicist T.H. Maiman and it is still one of the most powerful lasers available. This laser utilize a ruby rod for its combat-ready medium, which is its way of producing luminosity. Ali Javan and then created the first gas laser later in 1960. Three give out teams of American scientists operated the first semiconductor laser in 1962. Then in 1966, the American physicist Peter Sorokin built the first dye laser.To begin with, I will explain the definition of a laser It is a device that produces a very narrow powerful beam of light. A laser light is a narrow beam of light, in which all the waves are traveling exactly at the same length and moving together as one. A laser light is made up of lonesome(prenominal) one wavelength and it is a single pure color, while a approach pattern light has many different wavelengths or colors.The most common laser has three parts to it. They are zero source, an quick medium, and optical cavity. An vital force source can be anything that can give energy to the active medium through a process called &8220pumping. Lasers often use electricity usually a device called a flash lamp, as the en ergy source. An active medium is any material that can be utilise to create a laser light. The optical cavity is the structure that encloses the active medium. Most cavities have reverberates on both ends, one that fully reflects light and another that partially reflects light. The laser beam actually exits through the mirror that is partially reflecting.The central process of the laser is called stimulated emission.