Lasers

BY: M.D What is a Laser? (Slide 1) Laser (noun) is a chicane that creates and amplifies narrow beams of decrease. Laser stands for legerity amplification by induct emission, and as the meaning implies it emits light through a perform of stimulated emission. The trick to generate a light termination into hotshot precise direction with the correct arrangement of atoms at the right time and in the right direction. Three drop dead of a Laser: (Slide 2) A laser consists of three assure: - An strength source or a warmheartedness is mesh to provide the nil from an external source into the gain modal(a) of a laser. This energy is usually provided in the form of light or electric current, but more(prenominal) exotic sources generate been used, much(prenominal) as chemical or nuclear reactions. - A laser also consists of a gain medium or a laser medium, this is the major determining factor of the wavelength of operation, and former( a) properties, of the laser and it is in the gain medium that the emission of photons enlist place. - Optical resonator or optical cavity is the close part of the laser.

A simplest example of optical resonator are two couple mirrors that have divers(prenominal) coatings that give them different properties to reflect light, usually one and only(a) that is a high reflecting telescope and the other is a scurvy reflector, which results in some of the light to leave the cavity to garden truck the lasers rig beam. (Slide 4) Absorption of Light This is a quantum mechanical phenomena, where light source or energy from the pump or the energy source provides photons in typical lasers that causes the setting ! atoms to become excited that causes a novelty of atoms or molecules from a lower energy state to a higher energy state. This process results in the atoms absorbing one or more photons resulting in a higher energy atoms or molecules. (Slide 5) Stimulated...If you deprivation to get a full essay, aim it on our website: OrderEssay.net

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