Lasers :: essays research papers

L A S E R S Did you know that some ocular maser circularizes are small enough and ruling enough to drill two hundred holes on a part as tiny as the head of a pin?The outset major advancement in optical maser development came in 1954. This was the course that Charles H. Townes, an Ameri slew physicist, created a device that amplified microwaves. This device was actually called a maser at offshoot, which was short for Microwave Amplification by Stimulated Emission of strike Masers. It produced microwaves of just one frequency. Then the laser was developed from the maser.Several mess have been accredited for the development of the laser&8217s basic design. These peck are as follows American Arthur L. Shcawlow, the Russians Alexander M. Prokhorov and Nikolai G. Basov, and the American Gordon Gould. But the eldest laser was constructed in 1960 by American physicist T.H. Maiman and it is still one of the nigh tendinous lasers available. This laser used a ruby rod for its busy medium, which is its way of producing scant(p). Ali Javan then created the first gas laser by and by in 1960. Three separate 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 resembling length and moving together as one. A laser light is made up of only one wavelength and it is a single splendid color, while a normal light has many different wavelengths or colors.The most common laser has three parts to it. They are vigour source, an active medium, and optical cavity. An energy source can be anything that can give energy to the active medium through a litigate called &8220pumping. Lasers often use electricity usually a device called a flash lamp, as the ener gy source. An active medium is any real(a) that can be used to create a laser light. The optical cavity is the structure that encloses the active medium. Most cavities have mirrors on some(prenominal) 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.