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Laser-Induced Damage in Optical Materials
book

Laser-Induced Damage in Optical Materials

by Detlev Ristau
December 2014
Intermediate to advanced content levelIntermediate to advanced
551 pages
23h 57m
English
CRC Press
Content preview from Laser-Induced Damage in Optical Materials
501
Free-Electron Lasers
Chapter 18
18. Free-Electron Lasers
Michelle Shinn
18.1 Introduction to Free-Electron Lasers
e lasers discussed so far in this book are based on bound electron systems. It is also
possible to have laser action using an ensemble of free electrons. At rst blush, elementary
quantum mechanics would lead one to think that since a free electron has a continuous
set of energy levels to choose from, there is no upper or lower energy level to transition
between. However, as shown in [1], it is possible to create such a pair of states. What is
notionally correct, based on elementary quantum theory, is that one can set the tra
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Publisher Resources

ISBN: 9781439872161