What Is Full Form of LASER
The complete form of LASER is light amplification by stimulated emission of radiation. A laser is a type of machine that emits electromagnetic radiation. This radiation is both coherent and very weak. It is produced through a process called optical amplification.
History of LASER
Laser technology has a long and fascinating history. The word “laser” is an acronym for “light amplification by stimulated emission of radiation.” This refers to how lasers produce light.
Lasers were first developed in the early 1960s, and they have since become an essential tool in a wide range of industries. In medicine, lasers are used for vision correction to cancer treatment. In manufacturing, they are used to cut and weld materials. And in communications, they are used to transmit data at high speeds over long distances.
The potential applications of lasers are virtually limitless. And as researchers continue to develop new ways to harness this powerful technology, the future of laser technology looks brighter than ever.
LASER working principle
A laser is a device that emits light through optical amplification. The light is produced when an electric current passes through a lasing medium, usually a crystal or glass rod. The light is focused into a narrow beam using mirrors, and the amplified light can be used for many purposes, including communications, surgery, and manufacturing.
The working principle of a laser is based on the phenomenon of stimulated emission. In spontaneous emission, energy from an atom or molecule is released in the form of light. In stimulated emission, power from an external source (a laser) triggers a release of energy from an atom or molecule. This energy produces the emission of more photons by other atoms or molecules. This process leads to a build-up of photons, which results in a beam of light with very high intensity.
The efficiency of a laser depends on its ability to stimulate emission in other atoms or molecules. The most common way to achieve this is to use mirrors to reflect the light back and forth through the lasing medium. This allows the stimulated emission process to continue, and the resulting light beam becomes increasingly intense.
Lasers are used in various applications, including communications, surgery, manufacturing, and research. They have revolutionized many aspects of modern life, and their use is only likely to increase in the future.
Several different types of lasers are used in a variety of applications. The most common type is the semiconductor laser, made from materials such as silicon and germanium. These lasers are small and efficient, making them popular in devices such as CD players and barcode scanners.
Another type of laser is the gas laser, which uses a gas such as helium or neon to generate light. Gas lasers are often used for industrial applications to produce high-power beams with very little heat loss.
The final type of laser is the dye laser, which uses a liquid dye to create light. Dye lasers are primarily used for research and development purposes because they can be tuned to produce a variety of colors.
Lasers come in many shapes and sizes and can be used for various purposes. By understanding the different types of lasers available, you can better select the right one for your needs.