Lasers: What Everyone Should Know Essay -- Technology Tools Papers

Lasers What Everyone Should KnowLasers are very important tools in modern science, industry, and everyday life. From their creation everywhere forty years ago their designs have improved and their usefulness increased. They reverse on physical principles that are a mix of both pure and quantum mechanical, thus making them great examples for demonstrating the properties of out of work and excited states of atoms and molecules. The process of producing optical maser fallible can be complicated, but the explanation of laser action, becomes advantageously accessible when an explanation of the underlying physical principles, and the apparatus involved in creating it is given. Indeed, there are a number of different types of lasers, solid-state lasers, gunman lasers, semiconductor laser and dye pumped lasers. Each of these has different properties that dispatch them ideal for certain situations. Furthermore, each type functions differently, yet produces the same result. Th at is, light created from stimulated emission, which is totally in phase, all of the same wavelength, and all propagating in the same direction. With this knowledge everyone should gain a new appreciation of light and lasers.IntroductionWithout a doubt, everyone has heard about lasers, and while the first liaison that comes to mind at the mention of the word can be anything from some(a) sort of death ray to a doctor performing shopping mall surgery, their infusion into society is certainly very deep. However, the average layman may not be all that familiar with how exactly a laser functions or the sum total of its applications, which can range from medical instruments, to industrial machinery, to CD players, and as important tools in scientific research.First off, laser, or more appropriate... ...rd, R.L., Omni Mar., 54 (1979). 3 Gordon, J.P., Zeiger, H.J., Townes,C.H., Phys. Rev. 95, 282 (1954).4 Shawlow, A.L. and Townes, C.H., Phys. Rev. 112, 47 (1958).5 Maiman, T.H., Nature 187, 493 (1960).6 Larsen, E., Inc. Mar. 1, 68 (1989).7 Bennett, W.R., Phys. Rev. 126, 580 (1962). 8 Turro, N.J., Modern molecular(a) Photochemistry, The Benjamin Menlo Park (1988).9 Huheey, J.E., Inoganic Chemistry, HarperCollins New York (1993).10 Williams, M., PC World, Sanyos Blue Laser may Boost Optical Storage, 3/13/2002.11 Brownlee, C., Medical Drug Discovery, 4.11 14 (2001).12 Bell Labs Photonics Unit 13 Lane, E., The Seattle Times, Space detectives Scientists seek waves of gravity, 10/9/2002.14 Kent, D.F. and Nene, G., Enlighten, 6, 4 (2001).