Abstract
In this book we present the basic ideas needed to understand how laser light interacts with various kinds of matter. Among the important consequences is an understanding of the laser itself. The present chapter summarizes classical electromagnetic fields, which describe laser light remarkably well. The chapter also discusses the interaction of these fields with a medium consisting of classical simple harmonic oscillators. It is surprising how well this simple model describes linear absorption, a point discussed from a quantum mechanical point of view in Sec. 3-3. The rest of the book is concerned with nonlinear interactions of radiation with matter. Chapter 2 generalizes the classical oscillator to treat simple kinds of nonlinear mechanisms, and shows us a number of phenomena in a relatively simple context. Starting with Chap. 3, we treat the medium quantum mechanically. The combination of a classical description of light and a quantum mechanical description of matter is called the semiclassical approximation. This approximation is not always justified (see Chaps. 12 through 18), but there are remarkably few cases in quantum optics where we need to quantize the field.
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References
Born, M., and E. Wolf (1970), Principles of Optics, Pergamon Press, Oxford, Great Britain. This is the standard reference on classical coherence theory.
Glauber, R. J. (1965), in C. DeWitt, A. Blandin and C. Cohen-Tannoudji (Eds.) Quantum Optics and Electronics, Gordon and Breach, New York.
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Jacobs, S. F., M. O. Scully, M. Sargent III, and H. Pilloff (1978) - (1982), Physics of Quantum Electronics, Volumes 5–7, Addison Wesley Publishing Co., Reading, MA. These books give tutorial and advanced reviews of the theory and practice of free-electron lasers.
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Portis, A. M. (1978), Electromagnetic Fields: Sources and Media, John Wiley & Sons, New York. This is another good reference on classical electromagnetic theory.
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© 1990 Springer-Verlag Berlin Heidelberg
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Meystre, P., Sargent, M. (1990). Classical Electromagnetic Fields. In: Elements of Quantum Optics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-07007-9_1
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DOI: https://doi.org/10.1007/978-3-662-07007-9_1
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