The Laser Before we can learn about the laser we need to know a little bit about light (since that is what a laser is made of). Light from our sun‚ or from an electric bulb‚ is called white light. It is really a mixture of all the different colours of light. The colours range from violet‚ indigo‚ and blue‚ to green‚ yellow‚ orange‚ and red. These make up the visible part of the electromagnetic spectrum. Light is made up of particles‚ called PHOTONS‚ which travel in waves. The difference in
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A laser is a device that emits light through a process of optical amplification based on the stimulated emission of electromagnetic radiation. The term "laser" originated as an acronym for Light Amplification by Stimulated Emission of Radiation.[1][2] Lasers differ from other sources of light because they emit light coherently. Its spatial coherence allows a laser to be focused to a tight spot‚ and this enables applications like laser cutting and laser lithography. Its spatial coherence also keeps
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Lasers | <<< | >>> | Feedback | You can buy lasers from: * (currently no entries) (Vendors: you can place a link here.) Ask RP Photonics for advice on any aspect of lasers. Definition: devices generating visible or invisible light‚ based on stimulated emission of light “Laser” is an acronym for “Light Amplification by Stimulated Emission of Radiation”‚ coined in 1957 by the laser pioneer Gordon Gould. Although this original meaning denotes an principle of operation
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LASER TECHNOLOGY: ITS APPLICATIONS A Research Paper Presented To In Partial Fulfillment Of the Requirements for English 2 (Writing in the Discipline) SY 2012-2013 INTRODUCTION Background Information of the Study In our world today‚ there is no such thing that could not be touched by technology. Even a single device can be beneficial and maybe unbeneficial to us humans. Since then‚ lasers are part of our new era of technology. Even the first laser was recognized
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Light Amplification by Stimulated Emission of Radiation LASERS Laser Fundamentals • A laser is a device that generates light by a process called STIMULATED EMISSION. • The acronym LASER stands for Light Amplification by Stimulated Emission of Radiation. • The light emitted from a laser is monochromatic. • Laser emit light that is highly directional. • The light from a laser is said to be coherent. Laser Operation: Excited State Energy Introduction Metastable State Spontaneous Energy
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A REPORT ON LASER 1 Techno India College of Technology Megacity‚Rajarhat Kolkata 700156 A Report on LASER TECHNOLOGY By ZAKIR UDDIN AHMAD Student B.Tech 3rd year Applied Electronics and Instrumentation Engineering 2012 2 Abstract The word laser is an acronym that stands for "light amplification by stimulated emission of radiation." In a fairly unsophisticated sense‚ a laser is nothing more than a special flashlight. Energy goes in‚ usually in the form of electricity‚ and light comes out
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Laser dentistry is a relatively new form of dental care. Laser Dentistry uses lasers to perform surgery‚ prepare cavities‚ and harden dental resins. This use of lasers has allowed dentists to perform tasks with less pain and with improved results. There are many different types of lasers used in the dentistry field. Theses lasers included the argon laser‚ the diode laser‚ the neodymium: yttrium aluminum garnet (Nd:YAG) laser‚ the holmium: yttrium aluminum garnet (Ho:YAG) laser‚ the erbium: yttrium
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CIVIL APPLICATION OF LASER RANGE FINDER Synopsis: [laser is a device that emits light (electromagnetic radiation) through a process of optical amplification based on the stimulated emission of photons . Many scientific‚ military‚ medical and commercial laser applications have been developed since the invention of the laser ‚ one of these application is laser rangefinder ‚ which is a device that uses a laser beam to determine the distance to an object. The most common form of laser rangefinder operates
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Applications of Laser Application 1 : Defense A Laser Range Finder is an example of an application in the defense system of a country. To knock down an enemy tank‚ it is necessary to range it very accurately. Because of its high intensity and very low divergence even after travelling quite a few kilometers‚ laser is ideally suited for this purpose. The laser range finders using neodymium and carbon dioxide lasers have become a standard item for artillery and tanks. These laser range
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Lasers and Their Uses We have all at some point in our lives used or seen someone use a laser. They are used in compact disc players for stereos or computers‚ laser surgery‚ laser printers‚ holography‚ cutting and borring metals‚ communication‚ bar-code scanners‚ etc. Over the past three decades’ lasers have become a tool used daily by many people and they have become very useful in scientific research. As you can see lasers are a very useful and important tool which is why I have chosen this
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