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The word laser is an acronym , the letters standing for Light Amplification by Stimulated Emission of Radiation. Lasers work as a result of resonant effects. The output of a laser is a coherent electromagnetic field. In a coherent beam of electromagnetic energy, all the waves have the same frequency and phase.
The acronym laser stands for "light amplification by stimulated emission of radiation." Lasers work as a result of resonant effects. The output of a laser is a coherent electromagnetic field. In a coherent beam of electromagnetic energy, all the waves have the same frequency and phase.
In a basic laser, a chamber called a cavity is designed to internally reflect infrared (IR), visible-light, or ultraviolet (UV) waves so they reinforce each other. The cavity can contain gases, liquids, or solids. The choice of cavity material determines the wavelength of the output. At each end of the cavity, there is a mirror. One mirror is totally reflective, allowing none of the energy to pass through; the other mirror is partially reflective, allowing approximately 5 percent of the energy to pass through. Energy is introduced into the cavity from an external source; this is called pumping.
As a result of pumping, an electromagnetic field appears inside the laser cavity at the natural (resonant) frequency of the atoms of the material that fills the cavity. The waves reflect back and forth between the mirrors. The length of the cavity is such that the reflected and re-reflected wavefronts reinforce each other in phase at the natural frequency of the cavity substance. Electromagnetic waves at this resonant frequency emerge from the end of the cavity having the partially-reflective mirror. The output may appear as a continuous beam, or as a series of brief, intense pulses.
The ruby laser, a simple and common type, has a rod-shaped cavity made of a mixture of solid aluminum oxide and chromium. The output is in pulses that last approximately 500 microseconds each. Pumping is done by means of a helical flash tube wrapped around the rod. The output is in the red visible range.
The helium-neon laser is another popular type, favored by electronics hobbyists because of its moderate cost. As its name implies, it has a cavity filled with helium and neon gases. The output of the device is bright crimson. Other gases can be used instead of helium and neon, producing beams of different wavelengths. Argon produces a laser with blue visible output. A mixture of nitrogen, carbon dioxide, and helium produces IR output.
Lasers are one of the most significant inventions developed during the 20th century. They have found a tremendous variety of uses in electronics, computer hardware, medicine, and experimental science.
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What is the meaning of a l w s for the army?
It stands for Army laser weapon simulation
The term laser is a?
The word laser is a noun. It can be used in a sentence such as, "He pointed the laser at the screen when making a presentation." Laser can also be used as an adjective, such as in laser gun or laser beam.
How do you spell the past tense of laser?
The word laser is only informally used as a verb, with the past tense "lasered." (fired or shot with a laser)
What is the meaning of the acronym XLT?
XLT has many different meanings. Some of them include Microsoft Excel Template, Xerox Lexical Technology, Xenon Laser Tube, and Extra Large Telescope.
Laser full form?
The full form of laser is Light Amplification by Stimulated Emission of Radiation.
Meaning of laser mn?
nm means nanometer, that being the wavelength of that laser.
Meaning of the word Laser?
LASER is an acronym. It stands for Light Amplification by Stimulated Emission of Radiation.
What are 3 features of laser light?
Laser light is monochromatic, meaning it consists of a single color or wavelength. Laser light is coherent, which means the waves are in phase and have a consistent direction. Laser light is collimated, meaning it travels in a narrow, focused beam with minimal divergence.
How laser name invented?
LASER is an abbreviation, meaning "light amplification through stimulated emission of radiation".
What is a laser profilometer used for?
A laser profilometer is used for construction control surveys. Laser profilometers are non contact instruments, meaning they don't need to touch the surface.
Is laser light polarized?
Yes, laser light is typically polarized, meaning its electric field oscillates in a specific direction.
What is a profilometer used for?
A laser profilometer is used for construction control surveys. Laser profilometers are non contact instruments, meaning they don't need to touch the surface.
What is the meaning of a l w s for the army?
It stands for Army laser weapon simulation
What type of ray emitted from laser devices?
Laser devices emit focused beams of coherent light called laser rays. These rays are monochromatic, meaning they consist of a single color or wavelength. These properties make laser rays useful in a variety of applications, including surgery, communication, and materials processing.
In what ways is laser light different from visible light?
Laser light is different from visible light in several ways. Laser light is monochromatic, meaning it consists of a single color or wavelength, while visible light contains a range of colors. Laser light is also coherent, meaning its waves are in sync and travel in a straight line, unlike visible light which scatters in different directions. Additionally, laser light is intense and focused, making it useful for various applications such as cutting, welding, and medical procedures.
How many colors are in a laser beam?
A laser, by its very action of amplification of light, tends to be monochromatic. (one colour). But lasers may be made in several different colours depending on the materials used.
What laser light like?
Laser light is monochromatic, meaning it consists of a single color/wavelength of light. It is also coherent, meaning the light waves are in phase with each other, resulting in a narrow beam with high energy density. Laser light is also directional and can be focused to a small spot, making it useful for various applications such as cutting, welding, and medical procedures.
