"Laser" Essays and Research Papers

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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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laser security

Sagar Institute of Science & Technology, Bhopal Department of Electronics and Communication Major Project On Laser based security system STUDENT’S BY Under the guidance of Satyendra Choudhary Mrs. Deepa Gyanchandani 0187EC101095 Nikhil Solanki 0187EC101066 Contents Introduction Objective Methodology Block Diagram ...

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laser dentistry

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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Lasers and Their Uses

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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Laser Therapy Essay

While both laser therapy and scaling and root planing are both effective treatment methods for periodontal disease, scaling and root planing is used as a traditional method also called a deep cleaning while laser therapy is used as a relatively new alternative therapy. Both methods are usually used for patients who have periodontal disease with gingival pocket depths over 4mm. Though scaling and root planing has been the conventional treatment in the past, since 2008 laser therapy has doubled in...

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2.9 Erbium Doped Fiber Laser Analysis

2.9 Erbium Doped Fiber Laser The EDFLs can operate in several wave-length regions, ranging from visible to far infrared. The 1.55 region has attracted the most attention because it coincides with the low-loss region of silica fibers used for optical-communications [14]. The erbium absorption line that best matches with available high power pump diodes is in the 980 regime. At this wave-length, the absorption cross section of erbium is so low that an excessive amount of fiber would be required for...

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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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Laser Tattoo Removal

Informative Speech: Laser Tattoo Removal Audience Assessment: Specific Goal: My audience will understand the history of tattoo removal as well as how modern day laser tattoo removal works and the best candidate for laser tattoo removal. Topic: Strategy: Explanation. Narrowed: (1) History of tattoo removal; (2) How laser tattoo removal works; (3) Laser tattoo removal results Ethos: Primary: I am an Aesthetician and work for Dr. Mark Taylor. Tattoo removal is one of the most...

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Laser Eye Surgery (Retina Detachment)

The invention of the laser surgery was not a tedious and complicated one. But there were definitely spaces for trial and error as ophthalmologists Charles J. Campbell (1926-), H. Christian Zweng (1925-), Milton M. Zaret (1927-) and physicist Theodore Harold Maiman (1927-) learnt. The term “laser” is actually an acronym for Light Amplification by the Stimulated Emission of Radiation. The Ophthalmic surgery (eye surgery) was initially developed from the concentration of conventianal light by maginyfying...

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Applications of Laser

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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