Titlebook: Coherent Optics; Fundamentals and App Werner Lauterborn,Thomas Kurz Textbook 2003Latest edition Springer-Verlag Berlin Heidelberg 2003 Cohe

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https://doi.org/10.1007/BFb0121207Interferometric methods allow the measurement of small changes of physical quantities (length, pressure, temperature, etc.) that have influence on the propagation properties of light. This is generally done by letting two waves interfere, one undisturbed and one changed by the object [8.1].

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https://doi.org/10.1007/978-3-642-95163-3The Fourier transform plays an important role in science and technology The one-dimensional Fourier transform ., for instance, connects a time signal . (.) with its complex spectral function .(.) which gives information about the frequency content of the signal:

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,Zielfunktionale Sensivititätsanalysen,Light waves in a vacuum as given by the Maxwell equations propagate as linear waves. Accordingly, light waves can be superimposed and cross each other without mutual influence. To be sure, quantum electrodynamics predicts an interaction between photons. It can, however, be completely neglected at all practically attainable light intensities.

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History of Optics,Optics has developed from human sight. Sight is one of our most important faculties, whereby we interact with nature and gain knowledge of the physical world surrounding us. Therefore optical phenomena have attracted attention since ancient times.

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Fundamentals of Wave Optics,Light has, as we know today, a wave and a quantum aspect. The wave aspect dominates in the propagation of light, the quantum aspect dominates in absorption and emission. The theory covering the wave aspect is the classical theory of electromagnetic fields as elaborated by .. Its fundamentals are presented in this chapter.

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